Yeah, sounds like the pump since it ran fine up until the old one died and you replaced it. 40-45 PSI is normal for the M42 fuel system. If replacing the pump does not fix this, try a new fuel filter since they can get plugged.
Oh and yeah, the valve cover bolt holes are notorious for stripping. I had heli-coils in every one on both of my M42's.
Oh and yeah, the valve cover bolt holes are notorious for stripping. I had heli-coils in every one on both of my M42's.
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