Compression results - what do you say?

[Moody Blue]

This motor looks impeccable and was told it had low hours. Starter motor was non operational so I bought it as-is non running but the owner promises the motor runs great without problems.

So, I replace the starter and do a compression test. Did not try to start the motor yet. Here are the results;
#1 - 140psi
#2 - 125psi
#3 - 135psi
#4 - 130psi

Results look good to me, what do you think?

 

[rdnk_4_lf]

Re: Compression results - what do you say?

yup look good

 

[hkeiner]

Re: Compression results - what do you say?

One you do get it running, decarb the motor with some SeaFoam (or similar) and it might even out the compression readings even more.

 

[Moody Blue]

Re: Compression results - what do you say?

Seafoam was on my to-do list.

Is there ANY possibility of doing damage using the seafoam? Have had a can in the shed for quite awhile but afraid to use it.

 

[gss036]

Re: Compression results - what do you say?

SeaFoam will not hurt your engine.