About a month ago my car was overheating so I decided to bleed the cooling system, after I got all the air out the car was running perfect, a little bit cold in fact, but now the car started overheating again so I decided to check if there was Air in the coolant again. Lo and behold there was. How is this air getting into my cooling system?
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Air keeps getting into coolant
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You can buy a test kit to detect exhaust gas in your coolant which will confirm that you have a blown head gasketSeat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com
https://www.r3vlimited.com/board/sho...86#post4944786
Alice the Time Capsule
http://www.r3vlimited.com/board/showthread.php?t=360504
87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220
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definitely pressure test it. If it's full of coolant and excess air is getting in that means that the coolant is going somewhere. Put the tester on it pump it to the spec PSI then wait and see if the pressure drops significantly after maybe 15 mins come back to see the reading. 5 mins is probably fine but may as well be thoroughBMW tech
Umass Amherst
05 wrx sti
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Exhaust gas getting in to coolant can let itself out the reservoir cap and theoretically not lower the coolant level if you don't overheat it. Pressure testing is a good idea but keep in mind they are not high pressure testers compared to combustion gas being forced past a blown head gasket.
You can do compressio and leak down tests....but I still say it's a blown head gasket....unless it's a cracked head. I'm not aware of any other way for air to get in to the cooling system once it's been properly bled.I'd get the test kit for exhaust gas in the coolant before I did anything else.Seat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com
https://www.r3vlimited.com/board/sho...86#post4944786
Alice the Time Capsule
http://www.r3vlimited.com/board/showthread.php?t=360504
87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220
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Originally posted by jeffnhiscars View PostExhaust gas getting in to coolant can let itself out the reservoir cap and theoretically not lower the coolant level if you don't overheat it. Pressure testing is a good idea but keep in mind they are not high pressure testers compared to combustion gas being forced past a blown head gasket.
You can do compressio and leak down tests....but I still say it's a blown head gasket....unless it's a cracked head. I'm not aware of any other way for air to get in to the cooling system once it's been properly bled.I'd get the test kit for exhaust gas in the coolant before I did anything else.
And OP what are the symptoms besides overheating? Smoke coming out the exhaust? Smoke coming out the hood? Steam, anything? Is coolant missing? Are you sure your rad hoses aren't leaking etc?BMW tech
Umass Amherst
05 wrx sti
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Originally posted by jeffnhiscars View PostExhaust gas getting in to coolant can let itself out the reservoir cap and theoretically not lower the coolant level if you don't overheat it. Pressure testing is a good idea but keep in mind they are not high pressure testers compared to combustion gas being forced past a blown head gasket.
You can do compressio and leak down tests....but I still say it's a blown head gasket....unless it's a cracked head. I'm not aware of any other way for air to get in to the cooling system once it's been properly bled.I'd get the test kit for exhaust gas in the coolant before I did anything else.sigpic
Originally posted by JinormusJDon't buy an e30
They're stupid
1988 325 SETA 2DR Beaten to death, then parted.
1988 325 SETA 4DR Parted.
1990 325i Cabrio Daily'd, then stored 2 yrs ago.
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Originally posted by manuel325i View PostDo a pressure test, you could possible have a small leak somewhere. You can rent a pressure testing machine from your local Autozone (however you will need the adapter that fits onto your expansion tank). Are you losing any coolant?
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Originally posted by e30onBBSs View Post+1 on comp and leak down. We did those in school today really will help narrow down the problem.
And OP what are the symptoms besides overheating? Smoke coming out the exhaust? Smoke coming out the hood? Steam, anything? Is coolant missing? Are you sure your rad hoses aren't leaking etc?
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Originally posted by jeffnhiscars View PostExhaust gas getting in to coolant can let itself out the reservoir cap and theoretically not lower the coolant level if you don't overheat it. Pressure testing is a good idea but keep in mind they are not high pressure testers compared to combustion gas being forced past a blown head gasket.
You can do compressio and leak down tests....but I still say it's a blown head gasket....unless it's a cracked head. I'm not aware of any other way for air to get in to the cooling system once it's been properly bled.I'd get the test kit for exhaust gas in the coolant before I did anything else.
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you can def. do a head gasket with your experience level and a friend to help. you will need a set of etorx sockets though and a torque wrench. make sure to get the head checked out by a machine shop before re-assembly. ive had good luck using elring gasket sets and the elring headgasket without the copper coating
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Originally posted by 5Toes View Postyou can def. do a head gasket with your experience level and a friend to help. you will need a set of etorx sockets though and a torque wrench. make sure to get the head checked out by a machine shop before re-assembly. ive had good luck using elring gasket sets and the elring headgasket without the copper coating
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Originally posted by 5Toes View Postyou can def. do a head gasket with your experience level and a friend to help. you will need a set of etorx sockets though and a torque wrench. make sure to get the head checked out by a machine shop before re-assembly. ive had good luck using elring gasket sets and the elring headgasket without the copper coating
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Originally posted by Dzdimi14 View PostAlso do you have any idea how much it will cost in total?Seat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com
https://www.r3vlimited.com/board/sho...86#post4944786
Alice the Time Capsule
http://www.r3vlimited.com/board/showthread.php?t=360504
87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220
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