Anyone know what normal compression figure is?

[ahm]

Anyone know what the normal cylinder compression figure should be for a 1989 80hp 3 cyl Merc o/b? I am getting 110 psi on each cylinder with the engine cold. Is this OK? Thanks in anticipation.

 

[new owner]

Re: Anyone know what normal compression figure is?

yes that compression is good. Usually anywhere between 100 lbs and 140 lbs is where you need to be.

 

[12Footer]

Re: Anyone know what normal compression figure is?

And the fact that they are all equal is very good.