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RV-10 with stock IO540.
For the past 4 years of flying, when starting and warming up at idle (~1000 rpm) while the oil is below 100 deg, the oil pressure is usually ~100 psi.
The last 2 flights, (outside temps in 70-80) as soon as I have started it, oil pressure is in the 25-30psi range at 1000 rpm. If I add throttle to ~1200 rpm, then the oil pressure goes up to 30-35psi.
When in flight, the oil pressure is stable at ~70psi as it has always been.
Researching this, I think it might be a leaky pressure relief valve?
I am planning on changing the oil and filter, and checking the screens before next flight. Any other suggestions to check?
Is fixing a leaky pressure relief valve something that can be done reasonably easy? Should I check on it while I have the oil out of the engine?
Any advice or suggestions would be helpful as I have never done any work on the oil system before other than oil/filter changes
For the past 4 years of flying, when starting and warming up at idle (~1000 rpm) while the oil is below 100 deg, the oil pressure is usually ~100 psi.
The last 2 flights, (outside temps in 70-80) as soon as I have started it, oil pressure is in the 25-30psi range at 1000 rpm. If I add throttle to ~1200 rpm, then the oil pressure goes up to 30-35psi.
When in flight, the oil pressure is stable at ~70psi as it has always been.
Researching this, I think it might be a leaky pressure relief valve?
I am planning on changing the oil and filter, and checking the screens before next flight. Any other suggestions to check?
Is fixing a leaky pressure relief valve something that can be done reasonably easy? Should I check on it while I have the oil out of the engine?
Any advice or suggestions would be helpful as I have never done any work on the oil system before other than oil/filter changes