99 Johnson 90hp V4 Compression?

gonefishing7903

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Staff member
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Joined
Feb 3, 2013
Location
Overbrook, Ok, USA
Boat
Javelin Venom 17
#1
The motor hasn't been its usual self especially lately. Ran a compression test thus evening, three cylinders just over 90psi one just under. That seems a bit low, but since its fairly consistent I'm wondering if the guauge isnt just a bit off (harbor freight guage) so gonna borrow a different guage to compare. anyone know what the compression should be at?