evinrude outboard

[ringo111]

guys i just done a compression test on 140 hp and all 4cyc are reading 90 psi motor is a90s model ,can this be possible that all 4 cyc are reading 90 psi .i even doubled checked with 2 testers,fm what i been told usually 1 or 2 cyc will read in 100 psi range like to read your comments.

 

[JB]

Re: evinrude outboard

Your compression is fine, Ringo. When all cylinders match you can't get any better.

 

[ringo111]

Re: evinrude outboard

thanks jb i was getting worried .thinking motor was on its way out.thanks again

 

[5150abf]

Re: evinrude outboard

I have read that the 90s do run a bit lower compression so 90psi on them is really good and I agree with JB, you can't get any better than that.

 

[Faztbullet]

Re: evinrude outboard

It a looper and that about perfect on them, if it was a crossflow I would say its low.

 

[ringo111]

Re: evinrude outboard

thanks guys