Mercury 150 Black Max Compression

[Four Winns No Losses]

I have a 1984 Mercury 150 Black Max? What should the compression read for a somewhat healthy motor? Checked it today.. All 6 cylinders are around 105-110.

 

[Faztbullet]

It a little tired...usually around 120-125 on a 2L

 

[Four Winns No Losses]

Thank you..

 

[ondarvr]

Your gauge may read much differently though, it's more important that they are close in compression than the exact number.

 

[Four Winns No Losses]

coool good to know..