General compression test ?

Blue60

Blue60

Joined
Mar 16, 2003
Messages
615
Hi All,

Another question for the experienced mechanics out there...

What difference would you expect to see when doing a compression check on a "cold" engine versus an engine that has been warmed up?

Higher or lower values?

I did a compression check on my 2F engine during a recent tune and registered average values of about 155 across all the cylinders. This was done on a room temperature engine.

Any thoughts? :-/ :-/

Dave
 
Degnol

Degnol

Joined
Jan 22, 2003
Messages
8,118
Location
Kansastitty
Sounds like you're good on all 6. Normally I take out all the sparkplugs, prop the throttle open, choke open and give it a spin. I'd think the readings would only go up when things are warm. Even if the readings were numerically lower, be happy they're all close to the same.
GL :)
 
wayne_fj40

wayne_fj40

Joined
Dec 31, 2002
Messages
253
my theory,if they are all within 5 pounds of each other compression is not the prob,start looking for others but if that is what it is let me know Ill remember that
 

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