2006 90 HP Yamaha 2-stroke, oil-injected outboard motor ran hot and now has low compression (30 psi) in the top cylinder. Middle and lower cylinder are just below 120 psi.
I was not aware to test at running temp. Will have to recheck. Shoupd i expect the psi to increase when hot? That seem logical & what i need since mine were at 105, 100 & 100.
