West32
Active Member
- May 24, 2017
- 215
- Boat Info
- 1999 Sea Ray 370 EC Hardtop
Raymarine Axiom Pro system,AutoPilot,Radar,VHF,XM,Mercury Engine Gateway
- Engines
- Twin Mercruiser 8.1 Horizons with ZF Hurth Transmissions
When is the last time you changed your oil? I would get a sample and have it analyzed. This will tell you what is wearing and if you have a big issue inside. Also, what brand oil filter are you running. I had a Sierra fail on me last year which made the oil pressure gauge do weird things. Lastly, a good mechanic will use a stethoscope to zero in on the issue. At minimum, pop a valve cover off and look at the rocker arms for play