compression 1993 fd
compression 1993 fd
hi i want to know if my compression are good i get 110 110 110 on front rotor and 110 110 115 on rear rotor but at cold engine and when i start engine if is stoped more that a week he smoke blue for 2 minute thanks for help guys!!
Compression sounds fine. Smoke could be oil control rings leaking slightly. If it's only after sitting and on cold start it's probably nothing for immediate concern. Just make regular oil changes.
pretty sure you want to do a compression test on a warm engine.
compression test will read lower on a warmed up engine and that's the reading you are interested in.
also, that's not much driving for that period. potentially, the oil control seals may need a bit of run time before they loosen up, pop out of the rotor and do their job. oh, and agree on oil change suggestion above, you may also try 20W-50 (assuming you're using 15W-50, now).
compression test will read lower on a warmed up engine and that's the reading you are interested in.
also, that's not much driving for that period. potentially, the oil control seals may need a bit of run time before they loosen up, pop out of the rotor and do their job. oh, and agree on oil change suggestion above, you may also try 20W-50 (assuming you're using 15W-50, now).
Last edited by tinytyrant; May 2, 2013 at 07:07 AM.






but the car are sitting for like 1 year last 2 year he do like 300 mile with the car maybe after 500 mile the engine will run right