anthzm Posted February 26, 2012 Share Posted February 26, 2012 Hi please can someone help me. My car was over heating so we replaced the thermostat, but it still kept over heating so we bled it to remove air. Now the pipes furthest away from the water bottle are getting hot, but the pipes closest to the bottle and the radiator are staying cold. There is still high pressure building up in the water bottle and it is bubbling. The fan comes on randomly even when the radiator is still cold. Do you think I still have air in the system? or what else could it be! :( Quote Link to comment Share on other sites More sharing options...
Darren T Posted February 26, 2012 Share Posted February 26, 2012 Hi, Your problem does sound like a massive air lock Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 26, 2012 Author Share Posted February 26, 2012 thats what I thought too, thank you. Any advice on how I can solve this problem please and tell where the air lock is? I have had the car running for 20 minutes with the bottles cap off, but it still does it when I drive it. Quote Link to comment Share on other sites More sharing options...
Darren T Posted February 26, 2012 Share Posted February 26, 2012 Try putting the heater to hot and the blower to max, Keep squeezing the cold hoses to try and shift the air lock. Without seeing the car i can't tell you where the air lock is. Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 26, 2012 Author Share Posted February 26, 2012 Thanks I will give that a go :) shall I do that with the cap off again? Quote Link to comment Share on other sites More sharing options...
Darren T Posted February 26, 2012 Share Posted February 26, 2012 In theory it shouldn't make much difference as most cars should be self bleeding. But it won't hurt to try it with the cap off. Good luck with it. Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 26, 2012 Author Share Posted February 26, 2012 Thank you :) Quote Link to comment Share on other sites More sharing options...
Darren T Posted February 26, 2012 Share Posted February 26, 2012 That's ok Quote Link to comment Share on other sites More sharing options...
Darren T Posted February 26, 2012 Share Posted February 26, 2012 That's ok :D Quote Link to comment Share on other sites More sharing options...
Z3 MON Posted February 26, 2012 Share Posted February 26, 2012 Most modern cars do not need bleeding as they self bleed, if the water is acctually bubling i would suggest that your have hed gasket failure. have you checked the oil level? does the water level keep dropping? what colour is the water, also is there any white stuff on the cap of the radiator? Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 26, 2012 Author Share Posted February 26, 2012 I was hoping no one would mention the head :( The oil level is fine and the water is clear. I haven't noticed the water level drop, but the car should be cold now so I will go and check. The radiator is a sealed unit, so do you mean the water header bottle cap? Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 26, 2012 Author Share Posted February 26, 2012 The water level has dropped, but I think I can safely say the head has gone, as when I rev it there is water coming out of the exhaust :( :( Quote Link to comment Share on other sites More sharing options...
btmaldon Posted February 27, 2012 Share Posted February 27, 2012 You will get water out of the exhaust anyway as that is what the cat converts the gases to. Try changing the expansion tank cap. It sounds like its not holding the pressure, which makes the coolant boil at a lower temperature and stops it circulating properly which gives you hot and cold spots like an air lock. Good luck. Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 27, 2012 Author Share Posted February 27, 2012 Thank you, I have ordered one and will collect it tomorrow, lets hope that is all it is. All this advice is great, I am ruling everything out and trying to sort the problem before having to go to a garage. :( Quote Link to comment Share on other sites More sharing options...
btmaldon Posted February 27, 2012 Share Posted February 27, 2012 Thank you, I have ordered one and will collect it tomorrow, lets hope that is all it is. All this advice is great, I am ruling everything out and trying to sort the problem before having to go to a garage. :( Let us know how you get on. Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 27, 2012 Author Share Posted February 27, 2012 I will :) fingers crossed Quote Link to comment Share on other sites More sharing options...
anthzm Posted February 28, 2012 Author Share Posted February 28, 2012 it is the head gasket, I went to a garage today :( :( :( Quote Link to comment Share on other sites More sharing options...
btmaldon Posted February 28, 2012 Share Posted February 28, 2012 Sorry to hear that. It may have gone as a result of it over heating rather than it over heating as a result of the head gasket. I was hoping you would get away with the cap change as some years ago my Father in Law had the same symptoms. Took it to a gargae who said it must be the head gasket. Had it changed and it still over heated. As it was a Honda engine I had my doubts it was anything to do with the head so when I saw him a few weeks later I changed the cap and no more issues. I also had the same experience with a number of cars and changing the cap sorted those to. Must have been too late with yours. Quote Link to comment Share on other sites More sharing options...
anthzm Posted March 1, 2012 Author Share Posted March 1, 2012 Thank you for the suggestion it was worth a try before going to a garage and paying out for something that we could have fixed ourselves. Unfortunately this time like you say it was to late :( I should have my car back today :) Quote Link to comment Share on other sites More sharing options...
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