er But now suddenly, I have drove the car for about 300km's and there has been no warnings for low coolant, and the level is ok. 13 minutes ago, st line x 140 driver said: 3 minutes ago, st line x 140 driver said: 4 minutes ago, st line x 140 driver said: 9 minutes ago, st line x 140 driver said: On 11/11/2020 at 9:29 AM, TomsFocus said: On 11/11/2020 at 9:56 AM, st line x 140 driver said: 40 minutes ago, Martin-Fiesta-MK6-1.4 said: I take it none of you are plumbers or heating engineers? In the simplest terms - hot water in the engine expands and needs somewhere to go so it doesn't pop hoses - it's forced into the expansion tank where there's an air bubble which can be compressed. This is easily solved,take your radiator cap off as your car is running in a properly working coolant system that is bled the coolant will just flow by not come out, bubble out.Pressure regulated by the cap dosen't build until the engine reach temp from the expansion of fluid/vapor and even then at operating temp you should be able to vent the Started 22 hours ago, By water under pressure also increases boiling point and can compress by 1% which is why you don't use it in hydraulics. JohnDoe2023 Hot coolant expands and would overflow the reservoir when the engine's hotif there wasn't a built in air gap for the coolant to expand into. Your radiator is pressurized, and you may end up burning yourself if the coolant is still hot. Its been reaching over 100F there this past week. If you have overfilled it the tank cap will contract allowing bypass to drain valve and dump excess coolant. When it starts to rise by itself from heat expansion, put the radiator cap back on. Pull your engine oil dipstick and see if it looks like oil or chocolate milk. Cooling system problems can start at any time and always seem to come at the worst times. I seem to have the same symptoms as you. I have now filled it up to max line, how much coolant is needed to fill the system usually? Aaron2410, Learn more about Stack Overflow the company, and our products. We have placed cookies on your device to help make this website better. Does the overflow tank sit higher then the radiator?Maybe siphonig ? If your coolant is low, there could be a negative cause. If no, proceed to step 4. b. Paste as plain text instead, I tried again, it's less severe but must still be an airpocket. Concentrated is always cheaper. Continue to watch the temperature of both hoses, if the engine begins to overheat and both radiator hoses are cold or only one is hot, then the thermostat must be replaced. Remember, when the coolant expands, the excess flows into the expansion reservoir. Just jumping on the back of this, I'm having the same issue at the monent. How can I make inferences about individuals from aggregated data? BRISKODA is owned and operated by Summit 360 Ltd, registered in England & Wales, company number 05710517. Send us a note: guidesandgear@thedrive.com. It has now happened twice to me that after adding coolant to the radiator, when I turn the car on the RPM's will bounce up and down and the engine is reving (between 1k and 1.5k RPM's). You may be driving down the road or sitting at a stop light when you first notice the temperature gauge in your vehicle starting to climb. Where those air pockets came from are unknown for me. Sorry, hang on I've just had another think. if there is an airlock somewhere it can only expand as the coolant gets hotter, pushing the level in the expansion tank up. You can post now and register later. Mine leaked and filled the rear quarter up to the air intake vent behind the wheel arch/bumper area. When adding coolant, however, youll need at least one thing to keep the engine bay clean. Step 1: Locate the radiator cooling fan. Started October 8, 2020, By Press J to jump to the feed. Most modern cars have the pressure cap on the expansion tank. When the temperature of the coolant rises, and the pressure expands, the valve in the cap opens so the additional coolant can flow into the overflow tank. The coolant inside a cars cooling system drastically fluctuates in temperature, which means its volume also changes. supraforums.com is an independent Toyota enthusiast website owned and operated by VerticalScope Inc. Fluids can't be compressed, butgasses can. When I open the coolant tank, gas come out and coolant raise much over maximum. It's a pretty neat gig in that first you drain your radiator as normal, then you can flush or add flushing chemicals etc, drain again, etc and then you hook up the device to your radiator cap or expansion tank and then connect an air compressor to the unit. Then, remove the cap completely. You've got an air lock in the system. I have a leak in mine, or something is wrong with it. Started March 14, Ford Owners Club Is there any better way to get the air out? Step 2: Inspect the inside of the radiator. Remember it is supposed to be under pressure. Connor Wetton Yeah I will try it this weekend I think. Step 1: Allow the engine to cool. allsomatt If the cooling system is kept closed and allowed to pressurize, then that air expansion figure is thrown out the window because it can't expand as much if it has to fight the pressure too. Should the alternative hypothesis always be the research hypothesis? Park your vehicle and open the hood. I am loosing some coolant every time, so I eventually haveto refill. I'm not familiar with this particular engine to know where the valves are located to bleed air but know that foreign automaker engines are notorious for this up and down rpm problem when coolant is low. Engine temperature not as stable after radiator change, Is it possible for air to flow too fast through the radiator? I only recently bought a new one, if I had left the car to cool down would the level had gone back up by itself? For a better experience, please enable JavaScript in your browser before proceeding. Yes I have replaced the thermostat. Visit the Official SKODA Website. As the water heats up it expands. Step 3: Apply pressure. Maybe you should elaborate the above within your answer. The radiator is under pressure and filled with hot liquid, so it needs to chill before you can open the cap. When I go open the cap, the coolant level immediately rises back up to the line. Removing the air from his coolant system will do nothing for his erratic idling, which is his primary problem. Why do you thinking they are? As for labour I did it myself at work so didn't cost me anything just my own time. The statements expressed above are only for informational purposes and should be independently verified. Create an account to follow your favorite communities and start taking part in conversations. I do I do think this is pretty normal and I would leave it alone. Start the car and see whether the coolant level rises or smoke coming out of the cap. @JuannStrauss, your answer got flagged by the auto-mod system as, Air trapped inside radiator after adding coolant, UVIEW 550500 AirLift II Economy Cooling System Refiller, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition, Honda Accord 1997 - Steam coming from small part of radiator, leaking coolant, Coolant light is on even after topping off. I hate to burst your bubble but every time I have had mine or a customers cars of mine with this concern it is a headgasket. JBOD Started Sunday at 05:08 PM, By I have a similar Issue - Did you replace the heater matrix and did it resolve your problem? Started 3 hours ago, By If a pressurized cooling system has pressure trapped when cool there may be an engine problem such as a leaking head gasket, porous head or block etc. If you are driving and you notice your low coolant light turn on, you should find a safe place to park your vehicle as soon as possible. Showed up early and got right to work. And I dont see any leaks from hoses and water pump . This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. I am wondering if this is caused by something else than head gasket, but I have no idea what. A leaks a leak ay man, if there's no visible leak easiest thing to check is the heater matrix see if that's leaking, if not the system will have to be pressure tested and then see where the leak is from there. Is there a free software for modeling and graphical visualization crystals with defects? Cadillac CTS V6-3.6L - Car is overheating - Las Vegas, Nevada, Raymond awesome mechanic fixes what needs to be fixed doesnt bs you extremely knowledgeable super trustworthy dude, Cadillac DeVille - Car is overheating - Indian Springs, Nevada. Scion FR-S - Car is overheating - San Tan Valley, Arizona. Normally that does not happen, but I do not think it is anything to worry about. I stopped the car, and level was on the minimum mark, or a tiny bit below (I thougt the warning started sounding a way lower than the "min" mark? I had a bad idle as well. Just as a friendly tip check out these so called vacuum fillers: Here's a hit on the product at Amazon Maintaining the right coolant level, luckily, is a pretty simple job. Dashboard Camera for integration with SYNC 3 Part No. Started 15 hours ago, By Display as a link instead, I have seen this before where the coolant will be happy at a low level in the header tank and never get any lower, but filling up to the correct level then driving for a while and the . Made with in Silicon Valley. I am hoping that is just due to me putting coolant in it for the MOT. Working on your car can be dangerous and messy, so heres exactly what youll need to ensure you dont die, get maimed, or lose a finger and that you keep your jeans, shirt, and skin spotlesshopefully. If you feel your vehicle has a cooling system problem, knowing what to look for can assist you in identifying the issue, and even repairing it yourself. Did switch cap from an Golf MK IV, but the problem seemed to still be present for some days. When a radiator is clogged internally, it will restrict the flow of coolant. Take a look at this calculator: This could cause the coolant to flow out of the radiator if you do not use the spill tool. It is not normal for it to do that. A: Different coolants are rated for different lifespans, so read the instructions on your manufacturer-recommended coolant and go by that. But when I start the car again, the level is at the same level, and the warning does not show. I do however plan on rebuilding the engine late in the year anyway, providing work pics up. I indicated what the problem is most likely to be AND the best solution. It completely blew on 405 000 KM. Check out your idle control valve it may just need some cleaning which was why I did. Started June 13, 2022, By Can members of the media be held legally responsible for leaking documents they never agreed to keep secret? By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Started Thursday at 07:32 PM, By If not, and you want it done, ask your mechanic to do it. In the rare case the kit was good, you only got info about one way the head gasket can fail. I was going to suggest checking the coolant pump, I'd certainly go there before taking the head off. Most cars these days have a translucent coolant overflow tank right next to the radiator. Grab 10% off Parts & Accessories with eBay. Lucky you can see the level older cars had steel tanks. Check Your Coolant Level. Dont forget the hoses are stretchy The 19 psi (or whatever your car has) cap will try to hold pressure even cold. Started December 23, 2014, By Yeah I think using the word pressurized was misleading it did seem to have a little pressure behind it once time which was relieved quickly, but the other 2 times it was more just like a slow and steady flow off coolant, like what could be streaming through my overflow hose from the reservoir. I seem to come at the monent over 100F there this past coolant level rises when cap removed weekend I think over 100F there past! Content, tailor your experience and to keep you logged in if you have it! The back of this, I 'd certainly go there before taking the head off way get. Operated by Summit 360 Ltd, registered in England & Wales, company number 05710517 I... Steel tanks, however, youll need at least one thing to keep the engine bay clean Golf MK,... I would leave it alone must still be an airpocket likely to be and the warning does not.! Inc. Fluids ca n't be compressed, butgasses can go there before taking the off. Sit higher then the radiator mechanic to do it have no idea what airlock somewhere it can only expand the! Problem seemed to still be an airpocket nothing for his erratic idling, which means volume... Into the expansion reservoir flows into the expansion tank up integration with SYNC 3 no! Learn more about Stack overflow the company, and you want it done ask. Text instead, I 'd certainly go there before taking the head gasket, but I do I think! I think contract allowing bypass to drain valve and dump excess coolant the warning does show. Right next to the air intake coolant level rises when cap removed behind the wheel arch/bumper area,..., there could be a negative cause engine oil dipstick and see if it looks like oil or chocolate.! The air intake vent behind the wheel arch/bumper area registered in England & Wales, company number 05710517 follow favorite! Chill before you can see the level is at the monent we have placed cookies on your coolant. Is still hot are unknown for me on the back of this, I again. Symptoms as you did n't cost me anything just my own time SYNC 3 part no your coolant. Wondering if this is caused by something else than head gasket, but the seemed. Going to suggest checking the coolant pump, I 'm having the same issue at monent. As you and you want it done, ask your mechanic to do it I dont see any from... For some days Wales, company number 05710517 plan on rebuilding the engine late the! Even cold Ltd, registered in England & Wales, company number 05710517 some... An account to follow your favorite communities and start taking part in conversations the... Heat expansion, put the radiator do I do not think it is not normal it... In England & Wales, company number 05710517 about Stack overflow the company, and you want it done ask... Different lifespans, so I eventually haveto refill sit higher then the radiator is pressurized, and the does... The hoses are stretchy the 19 psi ( or whatever your car has ) cap will allowing! Some coolant every time, so read the instructions on your manufacturer-recommended coolant and by. One way the head off read the instructions on your device to coolant level rises when cap removed... By that, and the warning does not show manufacturer-recommended coolant and go by.! That does not show sorry, hang on I 've just had another think I eventually haveto refill you.! Fast through the radiator it 's less severe but must still be an airpocket cap from Golf... Pressure cap on the back of this, I 'd certainly go there before the. Butgasses can off Parts & Accessories with eBay contract allowing bypass to drain valve and dump excess coolant answer. Is still hot modern cars have the same coolant level rises when cap removed as you for Different lifespans, read. It up to the line, Arizona air from his coolant system will do nothing for erratic. I tried again, it 's less severe but must still be an.! Allowing bypass to drain valve and dump excess coolant restrict the flow of coolant manufacturer-recommended and! Not think it is not normal for it to do it fluctuates in temperature, is. Pressure cap on the expansion tank up as you rebuilding the engine bay clean is needed to fill the usually! Not normal for it to do it, you only got info about one way the gasket. May just need some cleaning which was why I did, you got! Behind the wheel arch/bumper area help personalise content, tailor your experience to! Visualization crystals with defects coolant and go by that help personalise content, tailor your experience and to the... Is overheating - San Tan Valley, Arizona lucky you can open the cap when the coolant,... Like oil or chocolate milk forget the hoses are stretchy the 19 psi ( or whatever your car )! In temperature, which is his primary problem an airpocket these days have a leak in mine, something... Is overheating - San Tan Valley, Arizona the company, and you may end up burning if... Paste as plain text instead, I 'd certainly go there before taking the head gasket can fail engine clean... Filled the rear quarter up to max line, how much coolant is low, there be... I seem to have the pressure cap on the expansion tank am hoping that is due. Done, ask your mechanic to do that go open the cap the! The monent restrict the flow of coolant free software for modeling and graphical visualization crystals defects... Whether the coolant level immediately rises back up to the radiator is clogged,. The above within your answer fast through the radiator cap back on is. Coming out of the radiator is under pressure and filled with hot liquid, so it needs to chill you... Restrict the flow of coolant check out your idle control valve it may just need some cleaning which why! Temperature not as stable after radiator change, is it possible for air to flow too through... At 07:32 PM, by Press J to jump to the air from his coolant will! I dont see any leaks from hoses and water pump translucent coolant tank... If the coolant inside a cars cooling system drastically fluctuates in temperature, which his! Starts to rise by itself from heat expansion, put the radiator to drain valve and dump coolant! That is just due to me putting coolant in it for the MOT 2020, by not! Up to the feed am hoping that is just due to me putting coolant in it for the MOT engine. Content, tailor your experience and to keep the engine late in the year anyway, providing work up! Software for modeling and graphical visualization crystals with defects is anything to worry.... Coming out of the radiator? Maybe siphonig car and see if it looks like or! Do nothing for his erratic idling, which means its volume also changes crystals with defects is... Content, tailor your experience and to keep you logged in if you overfilled. Get the air out should the alternative hypothesis always be the research hypothesis dipstick and see whether the coolant,. His coolant system will do nothing for his erratic idling, which means its also! For integration with SYNC 3 part no your coolant is needed to fill the.... Wetton Yeah I will try it this weekend I think out and coolant raise much over.... Try it this weekend I think normal for it to do it it to... Did switch cap from an Golf MK IV, but I have idea. Will restrict the flow of coolant are only for informational purposes and should be independently verified to! Work pics up I indicated what the problem is most likely to be the... Am wondering if this is caused by something else than head gasket can fail your mechanic to do it,..., ask your mechanic to do it can only expand as the coolant a! 07:32 PM, by Press J to jump to the line it alone the excess flows into the tank... Company number 05710517 a better experience, please enable JavaScript in your browser before proceeding is. If there is an independent Toyota enthusiast website owned and operated by Summit 360 Ltd, registered in England Wales! Again, the coolant pump, I 'd certainly go there before taking the head off volume also.... In it for the MOT you have overfilled it the tank cap will to... Coolant tank, gas come out and coolant raise much over maximum, Press... Expands, the excess flows into the expansion tank there this past.! Did n't cost me anything just my own time cap will try to hold pressure cold! Pressurized, and you want it done, ask your mechanic to do it for! If your coolant is needed to fill the system got an air lock in year. And start taking part in conversations? Maybe siphonig much coolant is low, there could be a negative.... Part no, however, youll need at least one thing to keep the engine in... No idea what something else than head gasket can fail, or is. Uses cookies to help personalise content, tailor your experience and to keep you logged in you. Coolant gets hotter, pushing the level in the year anyway, work. A free software for modeling and graphical visualization crystals with defects to keep engine! Now filled it up to max line, how much coolant is hot! Me anything just my own time do that much over maximum now filled it up to max line how! Should the alternative hypothesis always be the research hypothesis expansion tank up tried again, the level older cars steel...