Quote:
Originally Posted by scheides
Ok, I did compression test tonight: 170 167 170 176
Also I did a leak-down test. I'm not 100% sure I did it right or that my harbor freight unit works so well, but I came up with: 15 15 15 15, dead even across the board. However, no air coming out of TB, no air coming out of exhaust, but def air coming out of dipstick/oil fill cap  Where could it be coming from? past the rings?
I think I'm going to have shane do a comp/leakdown test for me to just get a second opinion. Maybe my fancy catch-can setup sucks/is broken? Not sure yet, but I'm gonna get to the bottom of it
swanny, I still have a glimmer of a doubt in the back of my mind on the rag in the FMIC theory. |
15% is decent, but exactly the same figures on every cylinder is freaky.
I don't usually bother with compression numbers if the leakdown is good. My Audi leaked between 12-3% fyi, each cylinder was a bit different.
Could be a bit of leaking past the rings, but with 15% you usually don't notice it that much, compression numbers look decent. I wonder if your measuring instrument is accurate. Maybe have Shane double check it like you mentioned.