MitsuStyle - View Single Post - Am I overlooking something? Low compression

s1ngletracker · 01-13-2011

that sucks, being that this is a rebuilt head! I was hoping the test results would just show bad rings like i suspected.

with the head off the block, can i rotate the cams and look at the valves when they open to see if there is gunk on the seats? This is a new head that was only on the car idling poorly for a few minutes, if i ran it more would they start to seat up better?

edit, just did it again with the intake manifold off so i could have a better listen to the intake ports. I could actually see bubbles of (some fluid?) around the valves that were leaking. really cylinder #4 is the worst, very loud. Cyl 3 is not as bad as I thought. Now i'm really curious and want to have this head tested/inspected by a machine shop.

01-13-2011	#7
s1ngletracker Join Date: Oct 2005 Location: The land of the next-gen HMMWV Drives: A BMW Posts: 1,875	Re: Am I overlooking something? Low compression that sucks, being that this is a rebuilt head! I was hoping the test results would just show bad rings like i suspected. with the head off the block, can i rotate the cams and look at the valves when they open to see if there is gunk on the seats? This is a new head that was only on the car idling poorly for a few minutes, if i ran it more would they start to seat up better? edit, just did it again with the intake manifold off so i could have a better listen to the intake ports. I could actually see bubbles of (some fluid?) around the valves that were leaking. really cylinder #4 is the worst, very loud. Cyl 3 is not as bad as I thought. Now i'm really curious and want to have this head tested/inspected by a machine shop. __________________ Style's automotive engineer Sponsored by DB Performance (dbptuning.com) A dsm, a bimmer, a DORGE CUMMINZ, and a non running DSM race car... for now. Last edited by s1ngletracker; 01-13-2011 at 02:32 AM..