compression cold and warmed up 1992 120hp

[macktack]

hi all does compression # change when motor is hot or cold,i have a 92 120hp rude,i got 125 on all 4 cold,is this good will they go up with motor warmed up,i havent run it yet im putting carb kits in an water pump,t ststs,thanx

 

[daviet]

Re: compression cold and warmed up

The compression will change after the engine is warmed up, but the cold reading is what is used as a standard. The difference between hot and cold is not much.