19Eclipse90
DSM Wiseman
- 5,679
- 1,693
- Sep 29, 2003
-
OKC,
Oklahoma
You mean the head bolts? Interesting, normally air blowing out of the oil cap hole is from excessive crankcase pressure due to poorly sealing rings or bad PCV valve.
Perhaps others will chime in here with a better idea, but what I would do -- if you do in fact mean the head bolts -- is pull one of the head bolts out that seemed to have air coming from it and measure its length. If the bolt shank exceeds 99.4mm then it is a failed part and could very well be a contributing factor to your problem. If it is under 99.4mm, reinstall it according to the same torque procedure above and check the other suspects one at a time. Although it sounds like you'll end up having to pull the head anyway, doing the one-by-one method should keep your head gasket seal in the small chance this isn't the issue.
It just seems more likely that you would be mixing or leaking coolant and oil if the head was lifting, not just losing compression especially through the head bolt holes.
Perhaps others will chime in here with a better idea, but what I would do -- if you do in fact mean the head bolts -- is pull one of the head bolts out that seemed to have air coming from it and measure its length. If the bolt shank exceeds 99.4mm then it is a failed part and could very well be a contributing factor to your problem. If it is under 99.4mm, reinstall it according to the same torque procedure above and check the other suspects one at a time. Although it sounds like you'll end up having to pull the head anyway, doing the one-by-one method should keep your head gasket seal in the small chance this isn't the issue.
It just seems more likely that you would be mixing or leaking coolant and oil if the head was lifting, not just losing compression especially through the head bolt holes.
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