I do have a little experience rebuilding motors, I started working in an engine repair shop when I turned 18, I'm now 77. I used to rebuild two in line 6 cylinder Chevys in a day some ended up with 4 different size pistons
I bought the boat from a novice boater, got it for a decent price because it wasn't running right, I'll get the cylinder bored and replace rings and bearings on all pistons put new filters in and clean everything up and should have a good running boat fuel pump was full of sludge so bad water...
Having a real problem getting the flywheel off have a puller on it and tightened it as much as my ir impact will torque about 450 ftlbs don't want to heat it but may have to
This is a 2009 with low hours, I'd rather try to fix it this is a direct fuel and air injection does not use mixed gas oil is injected into the main bearing not into the fuel mixture, burns straight gas so it meets CARB requirements
I have a 90 hp Merc optimax dfi engine top cylinder reads 30 psi removed injector rail inside of cylinder looks normal, could an injector not delivering proper amount of air from pump be a cause for low compression
