1985 70hp johnson

[Billnicole]

Im looking to buy a boat with this motor what should the compression be? I was told the powerhead is only 3 yrs old.

 

[rickdb1boat]

Re: 1985 70hp johnson

Billnicole <br /><br />At least 100 PSI on all cylinders and all cylinders within 10-15% reading of each other. If one is alot lower than the others, pass on it.

 

[Billnicole]

Re: 1985 70hp johnson

Thanks for the quick response