86 175hp merc compression test

[crazy charlie]

Hi guys ,I am about to do a compression test and would like to know what readings are ideal fo my motor???

 

[crazy charlie]

Re: 86 175hp merc compression test

In case you missed the heading it is an 86 175hp merc. Thanks in advance. Charlie

 

[The Marine Doctor]

Re: 86 175hp merc compression test

I believe they usually score around the 100psi mark.<br /><br />TMD

 

[crazy charlie]

Re: 86 175hp merc compression test

thanks Marine Doctor,would you know how much the readings can vary and still be ok????