Compression check when cold

gottadiesel · 02-19-2009, 01:39 AM

Can anyone tell me what I should expect to get when trying to read compression with the engine cold, as compared to operation temp.

So you ask why? Well I already have numerous items removed, including turbo and ex manifold. Yeah I know I should have checked plugs 1st, but anyway so I pull the plugs there were two issues, one is a certainly have an issue with both valve cover gaskets, but also the No3 Cyl head cover issue, which I know what I want to do to solve that issue, so there was oil on the top of the plugs and on the threads from that issue, but I the plugs are also wet in the chamber, not all but 2 or 3 of them had a film on them, so now I want to know why... so now I need to check compression to see if I am getting some blow by or what...

Unless I am perhaps missing something and the oil over time could actually make it through the plugs threads...but I assume not or another way that oil could make it on the plugs...

Any thoughts would be appreciated.

02-19-2009, 01:39 AM	#1
gottadiesel Stock Join Date: Feb 2009 Location: SW Washington Posts: 24	Compression check when cold Can anyone tell me what I should expect to get when trying to read compression with the engine cold, as compared to operation temp. So you ask why? Well I already have numerous items removed, including turbo and ex manifold. Yeah I know I should have checked plugs 1st, but anyway so I pull the plugs there were two issues, one is a certainly have an issue with both valve cover gaskets, but also the No3 Cyl head cover issue, which I know what I want to do to solve that issue, so there was oil on the top of the plugs and on the threads from that issue, but I the plugs are also wet in the chamber, not all but 2 or 3 of them had a film on them, so now I want to know why... so now I need to check compression to see if I am getting some blow by or what... Unless I am perhaps missing something and the oil over time could actually make it through the plugs threads...but I assume not or another way that oil could make it on the plugs... Any thoughts would be appreciated. __________________ New Supra Owner, 1988 5spd Turbo, minimal mods - Black Stagger Wheels Rear 225/45/18 on 18x8, Front 215/40/17 on 17x7.5. Aluminum cooler to TB pipe with SQV BOV, SS Turbo Intake with HV MAF Filter Adp. Tunes - Kenwood Deck Driving Kenwood 1200W 2CH / Sony 1000W 2CH, Kenwood 750W Class D Mono, Rockford Fosgate 500W Mono. Amps Driving (4) 4.5 140w, (2) 6.25 200w, (2) 6x9 225w, (2) JL 10's and (1) JL 8... Yea its loud enough