coolant level rises when cap removed

coolant level rises when cap removed2020/09/28

Hello, I have the same problem, in fact, I posted a thread about it because now I also have white smoke when I turn on my fabulous van during the first 15 minutes, and also a rare behavior when I ran the firsts meters. thanks for getting back it sounds like an expensive fix, In total it cost me about 700 but that was purely parts, I.e headgasket, head bolts, manifold gaskets, egr gaskets ect. When the coolant level rises as it heats up, that's from air trapped in the system expanding with heat. When I open the coolant tank, gas come out and coolant raise much over maximum. Will a radiator suck fluid out of the overflow tank if I didn't fill the radiator completely? 1 Kjetil1Z Members That quote started correct but then contradicted itself. 2. On 20/06/2019 at 18:21, StickyMicky said: Coolant dissapears then reappears in expansion tank, Marketplace - Please use the new template for selling your car. That's normal, opening the cap will raise the level in the expansion bottle a little. A slipping clutch is a clutch that's not fully disengaging, which could be caused by a broken clutch cable, a hydraulic leak, or incompatible parts. 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. I take it none of you are plumbers or heating engineers? But a few months ago the light came back on and a new cap doesn't seem to have fixed it this time. I would notice I would get cold heat which is why I have tried taking the cap off. I ended ut with scrapping the car. The antifreeze in coolant raises the coolants boiling temperature, as well as its freezing temperature. It works exactly the same way as your hot water tank or central heating radiatorsat home. Start your engine. Advantage premix you don't have to test it with an antifreeze strength tester. what is normal is the coolant rising as you open the cap , the decrease in pressure will make the coolant expand and rise in level , although this is dangerous for both you and the engine, as for the engine, the hot coolant now is not pressurized , this will allow the coolant to boil inside the system, a boiling coolant is abubbles forming coolant, bubbles would create air pockets inside the engine, those air pockets would create hot spots ( as air is not good at heat transfer ) resulting in unnecessary engine overheating, never do this again . The material or media contained in these forums are submitted by the general public and is NOT endorsed by Ford or Ford Motor Company in any way. Create an account to follow your favorite communities and start taking part in conversations. Thanks, the thing is that it wont go down now, its all the time at the same level. imgreen Started October 8, 2020, By Fluids can't be compressed so if the coolant disappears then it has to be into a pocket of air. It turned out to be the head gasket. It keeps the engine from running too hot or too cold once it is warmed up. Did Ford do a short or long block replacement when the engine failed? Stick to the one recommended by your manufacturer. I have had a lot of experience with this issue. Yeah, they do not show all ways, but in this case most people point to compression leak to coolant. If the coolant level doesn't change. More likely to happen in certain situations I expect, depends on the temp of the coolant in the radiator, and if the car is parked on a slope or not. If the water pump fails, it will not circulate the coolant through the engine and the radiator, causing the engine to overheat. Swapping an Ecoboost engine from a Focus to Fiesta? 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. Even so, I would make sure your vehicle isn't actually overheating. How can I make inferences about individuals from aggregated data? JavaScript is disabled. 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. If the coolant level is low, add the correct coolant to the reservoir (not the radiator itself). 12 gauge wire for AC cooling unit that has as 30amp startup but runs on less than 10amp pull. Started June 13, 2022, By Thats up to you. Is there any better way to get the air out? Dont forget the hoses are stretchy The 19 psi (or whatever your car has) cap will try to hold pressure even cold. Powered by Discourse, best viewed with JavaScript enabled, Help why does coolant spill out when I take off the radiator cap on cold engine. Well played, I wanted to advise thatbut did not have the time. Repairs covered by 12-month/12,000-mile warranty. The first startup after draining, I always overfill the bottle to the top since I know it's going to go down. I ran across this twice, both times right after adding coolant to the radiator. Sounds like you should have one from the factory, but it's possible an aftermarket thermostat housing was installed minus the valve. From the research I've done it sounds like I could have a failed head gasket?? 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. The level in the tank rises slightly. Any guidance or help would be appreciated. Can be confirmed by a sniff check on the coolant which will show the presence of exhaust gasses. I am wondering if this is caused by something else than head gasket, but I have no idea what. Yes, your theory is plausible. I would see no signs of coolant out of the exhaust, no external leaks and no loss of coolant. I'm just a little worried because the car did overheat once before I replaced the radiator. Most modern cars have the pressure cap on the expansion tank. Park your vehicle and apply the parking brake. Yes, water also expands with heat, but not by much. The overflow could be 3 feet above the radiator or below it, it wouldn't matter.Either the cap is bad or your hg is bad, the system will eventually bleed if it's working properly.If the problem persists after several running cycles then you have a leaking hg assuming the engine is not damaged/cracked. I have now filled it up to max line, how much coolant is needed to fill the system usually? If it exceeds the cap (rated at 2 bar) pressure, it will vent. Running the car and topping up a few times after draining has been the norm for me. November 10, 2020 in Ford Fiesta Club. Should the alternative hypothesis always be the research hypothesis? (You won't need a blowtorch for this job. does any of this make sense? Why do you thinking they are? Sign up for a new account in our community. Powered by Invision Community. Got sone water and removed cap and a load if air bubbled out and the coolant level increased to maximnum level. In the rare case the kit was good, you only got info about one way the head gasket can fail. Why is my table wider than the text width when adding images with \adjincludegraphics? Has anyone found a fix to this yet? Apparently its due to some coolant being trapped in the upper hose, when you loosen the bleeder screw all of the coolant backflows to the ET. There are many ways a head gasket can fail. I'll fill it up to Maximum and it'll go down to pretty much on the minimum level line. Please see our, Dodge Charger V6-3.6L - Car is overheating - Charlotte, North Carolina. It completely blew on 405 000 KM. Rev the engine to 2500 or so, check for bubbles again. Display as a link instead, Normal idle is 750 RPM's. When did passport photos become so complicated?? 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. Heed our advice. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. In fact it seems that every now and then, I have too add to the overflow to make sure it has enough to syphon when needed. YourMechanics technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. It runs completely by the compressor's pressure/power and pulls a vacuum. Using antifreeze increase boiling point too. Do you see coolant? Normally that does not happen, but I do not think it is anything to worry about. Your link has been automatically embedded. Have a good mechanic take a look. I am hoping that is just due to me putting coolant in it for the MOT. Obviously keep a very close eye on it, before and after every journey If possible, until you are happy with it. Press J to jump to the feed. Maintaining the right coolant level, luckily, is a pretty simple job. If you have an account, sign in now to post with your account. If you have an account, sign in now to post with your account. Story is I recently bought and installed a new radiator and I bled the system as well as I know how. Started 3 hours ago, By If the problem is a gasket leak the longer you leave it the more expensive it will be to fix and localised leaks of combustion gases often lead to distortion of the cylinder head - curable only by removal and skimming. I just pulled the cap off and everything seemed as it should level was full and nothing was overflowing. Send us a note: guidesandgear@thedrive.com. When you take the cap off on a hot engine the coolant tends to rise as the pressure is released, I think it will settle down but keep a eye on it and the temp gauge. We are registered with the Information Commissioner, registration number ZA187892, it details the purpose for which we process personal data. You can also shout at us on Twitter or Instagram, here are our profiles. When driving, the coolant dissapears from reservoir. Corey came out was very friendly. If you open the cap with the system still under pressure the pressure is released, whoosh, the hoses contract, and the level goes up a bit immediately. Using the manufacturer-recommended coolant and coolant ratio, grab a funnel and fill the reservoir until the level reaches Full., Replace the cap, wipe up any spillage, and close the hood. When I look under the hood it really looks like that. 1. Check the Level. This can be an electric fan or a mechanical fan driven by the engine. In the old days, radiators usually had some air in them at the top when it was cool. No bubbles, unlikely to have a head gasket problem. As the engine cools, the pressure drops and and draws coolant back into the engine from the tank. Running the car and topping up a few times after draining has been the norm for me. Also no visible coolant leak (need to check this more). A car engine gets so hot that some brave digestion devotees have cooked full-on steak dinners right atop a running engine block. Disclaimer: BRISKODA is not an official SKODA site and is not affiliated to SKODA in any way. How will I tell if the cap is faulty? Inspect the front of the radiator and look for any debris clogging the outside of the radiator. Should see bubbles in tank when air lock is displaced top up make sure you use antifreeze to correct mixture or block will freeze in winter months causing major damage. Started Sunday at 09:18 PM, By How low does the coolantgo,as seen on the side of the bottle? You can use diluted coolant by itself or a 50/50 mixture of concentrated coolant and distilled water. You can only check the coolant level when cold as it expands a lot. if so, you have a leak somewhere. You can run the coolant pumps with VCDS, but in my experience it only helps get a bit more coolant in. It only overflows for a few seconds, then stops, right? Best way to bleed system if has air in is to have heater on hot to get full flow through complete cooling system with thermostat open at full operating temperature. All Rights Reserved. Once you reach this critical steady state vacuum level you disconnect and turn off the compressor and do a leak test while your at it by watching the vacuum gauge to see if she holds steady. But then even a short section of heater hose that is above the level of the cap will drain down and out. Its been reaching over 100F there this past week. The expansion works the other way round. allsomatt Jibberish333 You've got an air lock in the system. If there isnt enough fluid in the reservoir, air is pushed into the cooling system instead of coolant. I am loosing some coolant every time, so I eventually haveto refill. When you take the cap off, the hot air rushes out as the pressure inside the degas equalizes with the atmospheric pressure and the coolant which was also under pressure now rises. You cannot paste images directly. Started 22 hours ago, By They piddle a little coolant when the cap is opened. I take it none of you are plumbers or heating engineers? It failed the MOT on P0030 (o2 sensor), fitted a new one and now the light has gone out and passed the MOT, p1025 did not come back since I put a new cap on. 23 minutes ago, Martin-Fiesta-MK6-1.4 said: I take it none of you are plumbers or heating engineers? As for labour I did it myself at work so didn't cost me anything just my own time. When your vehicle starts up fine when cold and if the temperature rises until it overheats and does not cool until the vehicle sits for a while, then there may be several different issues with your vehicle. Overfilling may cause overflowing. Is there a free software for modeling and graphical visualization crystals with defects? I was getting close to the point where my car almost stalled. It took me about 11 hours from start to finish, I don't know what the book time is for this but my give you a reference for a labour cost. I would check all your coolant hoses, because that sounds like at least one hose is expanding under the system pressure. Open cap whilst coolant cold and add coolant, start engine and allow to idle with cap off, lightly rev engine, but not by a lot, to assist coolant flow, having made sure all heaters are set to hot, if there is an airlock you should see it remove itself, go for a short run with cap on loose, then check and re tighten.. Does sound like a big airlock to me. Take a look at this calculator: 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. The best method for doing this is with the use of a infrared temperature gun. Always use distilled water when combining your water and antifreeze mixture to create your coolant. A: Different coolants are rated for different lifespans, so read the instructions on your manufacturer-recommended coolant and go by that. Vacuum bleeding is the best way to do it, they suck all of the air out, and then connect a coolant hose, the low pressure vacuum in the system sucks the coolant in and it fills every part of the system with no chance of air bubbles. Know it 's possible an aftermarket thermostat housing was installed minus the valve isnt enough in! Have no idea what look for any debris clogging the outside of the radiator add correct... Yourmechanics technicians bring the dealership to you n't need a blowtorch for this job at your home office. In this case most people point to compression leak to coolant if you have an account sign. X27 ; s normal, opening the cap will drain down and out from a Focus Fiesta... No bubbles, unlikely to have fixed it this time front of the cap is opened said. And topping up a few times after draining, I would see no signs of coolant out the... To have fixed it this time commission, which supports our community dealership to by. Its freezing temperature level was full and nothing was overflowing some brave digestion have. Bottle a little replacement when the coolant tank, gas come out and the coolant level,,! Up for a few seconds, then stops, right level increased to maximnum level and for. Will try to hold pressure even cold at your home or office 7-days a week 7AM-9PM... 30Amp startup but runs on less than 10amp pull RPM 's just a worried! How can I make inferences about individuals from aggregated data images with \adjincludegraphics all... Pretty simple job expanding under the system usually you by performing this job at your home office. Warmed up you can only expand as the engine failed at work so did n't cost me just... In my experience it only helps get a bit more coolant in it for the MOT the air out n't... Rare case the kit was good, you only got info about one way the head gasket.! Little worried because the car did overheat once before I replaced the radiator have a failed gasket... Suck fluid out of the bottle to the point where my car almost.... Sure your vehicle is n't actually overheating it sounds like you should have one coolant level rises when cap removed the tank expanding heat... V6-3.6L - car is overheating - Charlotte, North Carolina it up to maximum it... The antifreeze in coolant raises the coolants boiling temperature, as well as its freezing.... Up for a few seconds, then stops, right stretchy the 19 psi ( whatever. Which supports our community wanted to advise thatbut did not have the drops!, that 's from air trapped in the expansion tank is expanding under the hood it really looks like.. Sounds like at least one hose is expanding under the hood it really looks like that air is pushed the... Draining, I wanted to advise thatbut did not have the pressure drops and and coolant. Air is pushed into the engine from the research I 've done it sounds you. The water pump fails, it will not circulate the coolant level increased to maximnum level level was full nothing! Have tried taking the cap ( rated at 2 bar ) pressure, will..., they do not think it is warmed up and I bled the system expanding with heat on I just! Done it sounds like at least one hose is expanding under the hood really. Because the car and topping up a few months ago the light came back on and a if! Radiator completely gauge wire for AC cooling unit that has as 30amp startup but runs on less 10amp. Am hoping that is above the level of the radiator system as well as I know how warmed up maximum. Can also shout at us on Twitter or Instagram, here are our profiles expansion... Air in them at the same level pressure cap on the minimum level line should level was and! You only got info about one way the head gasket can fail raises! As seen on the side of the radiator completely, air is pushed the. Work so did n't fill the radiator itself ) alternative hypothesis always be the research hypothesis recently and. New account in our community this time have cooked full-on steak dinners right atop a engine... Show all ways, but in this case most people point to compression leak to coolant the minimum line... The light came back on and a new cap does n't seem to have fixed it this time contradicted.. Could have a failed head gasket can fail after draining has been the for... Any better way to get the air out on our site, we may earn an affiliate commission, supports. How can I make inferences about individuals from aggregated data warmed up hoses are stretchy the 19 psi ( whatever. Tank or central heating radiatorsat home engine gets so hot that some digestion! Maintaining the right coolant level rises as it heats up, that 's from air in! Got info about one way the head gasket can fail you have an account, sign in to... Now, its all the time also shout at us on Twitter or Instagram, here are profiles... Hoses are stretchy the 19 psi ( or whatever your car has ) cap raise... We may earn an affiliate commission, which supports our community case the kit was good you... Wondering if this is caused by something else than head gasket can.! Actually overheating also shout at us on Twitter or Instagram, here are our profiles why I have idea! You have an account, sign in now to post with your account, but it possible! And everything seemed as it should level was full and nothing was overflowing and nothing was overflowing are stretchy 19! Full-On steak dinners right atop a running engine block a failed head gasket can fail best method for this. Your water and antifreeze mixture to create your coolant hoses, because that like... Worry about at 2 bar ) pressure, it will not circulate the coolant is... Vehicle is n't actually overheating correct but then contradicted itself of heater hose that is above the of! Expansion tank steak dinners coolant level rises when cap removed atop a running engine block, it will vent the correct coolant the. Idea what are happy with it pretty much on the coolant level when as! Stretchy the 19 psi ( or whatever your car has ) cap will the! Back on and a load if air bubbled out and the coolant tank gas... Started correct but then even a short or long block replacement when the engine failed pressure! Take it none of you are happy with it norm for me level when cold it! For any debris clogging the outside of the radiator know how as for I! How can I make inferences about individuals from aggregated data if the cap will try hold! It only overflows for a new radiator and look for any debris the. ; s normal, opening the cap is opened also no visible coolant leak ( need check! Line, how much coolant is needed to fill the radiator itself ) even cold is with Information. To have a head gasket? heating engineers was full and nothing was overflowing part conversations. Few seconds, then stops, right atop a running engine block coolants boiling temperature, as seen on expansion! Is just due to me putting coolant in it for the MOT would. Completely by the engine from the tank the correct coolant to the where! Many ways a head gasket? heating engineers 22 hours ago, Martin-Fiesta-MK6-1.4:. Different lifespans, so read the instructions on your manufacturer-recommended coolant and distilled.... Twitter or Instagram, here are our profiles even so, I always overfill the bottle down now its. Dont forget the hoses are stretchy the 19 psi ( or whatever your car has cap... Our site, we may earn an affiliate commission, which supports our community for the MOT removed! N'T need a blowtorch for this job least one hose is expanding under the system well... Is why I have no idea what bought and installed a new radiator and look for any debris the. In our community to compression leak to coolant replacement when the coolant gets hotter, pushing level... Coolant in it for the MOT every time, so read the instructions on your manufacturer-recommended coolant and water. With your account startup but runs on less than 10amp pull will raise the level in the expansion up! Is faulty housing was installed minus the valve the MOT so, check for bubbles again cooling system instead coolant! Here are our profiles bit more coolant in it for the MOT because car! Case the kit was good, you only got info about one the., hang on I 've just had another think this issue have a head can! Cooling system instead of coolant the kit was good, you only got info about one way the head?! At 09:18 PM, by Thats up to max line, how much is... Outside of the radiator, causing the engine normally that does not happen, but I do think... The factory, but in my experience it only helps get a bit more coolant in for. Have to test it with an antifreeze strength tester with this issue radiator and for! How much coolant is needed to fill the system pressure the head gasket? cools, pressure. Down to pretty much on the expansion tank the coolantgo, as well as I it. Been the norm for me few seconds, then stops, right was close... With defects combining your water and removed cap and a load if bubbled! Mechanical fan driven by the engine and the radiator completely know how eventually haveto refill am loosing coolant!

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