celstar
Well Known Member
I have a new to me RV-3B that I'm having a little issue with consistent oil pressure. Start up it is at 85-90 then stays in that area until after climb out and put in cruise. As soon as you set cruise rpm you can watch the oil pressure start dropping slowly. Until it gets to around 45. Then it stays in the general area until throttle back to land then goes up again to the high 60s .
We have had the oil pressure relief valve apart to check for debris or something else but all looks good. We are wondering now if the relief spring could be bad or wrong and would cause this type of issue. Engine runs great with steady oil temperatures and cylinder head and exhaust temps all seem good. Any ideas on what to look at next would be greatly appreciated.
We have had the oil pressure relief valve apart to check for debris or something else but all looks good. We are wondering now if the relief spring could be bad or wrong and would cause this type of issue. Engine runs great with steady oil temperatures and cylinder head and exhaust temps all seem good. Any ideas on what to look at next would be greatly appreciated.