Hello this is my first post here but I’m having some real issues with this 1985 Yamaha f9.9sk. The motor had no oil pressure when I first got it so I tore it down and found a rod bearing had spun, so I bought a new rotating and installed it with all new gaskets. Now it runs and first start it had 60psi oil pressure but then slowly lost it until it hit zero again. I’m not sure what would cause that I also replaced the oil pump with one from a running motor. It only loses pressure when it’s warm and if I leave it sit and start it back up it will have 30-40 psi and lose it all again over a min or two. What’s your thoughts?
