What are the different signs that hint at an oil pump/drive issue with an RB26? And how does one diagnose it?
What I am observing in my recently installed RB26DETT in my GTS is that on cold start, the stock oil pressure gauge is showing the pressure to be at the '4' (halfway) mark. Then it slowly drops to the quarter (2) mark between 0 and 4. After warming up and driving it for a bit, it moves close to zero, and sometimes drops to zero. When I rev the engine, it goes back up to around the quarter mark (2). And after driving it hard, the pressure seems to stay between 0 and 2, with the needle moving up very slowly when I rev it. I am worried and having no experience with RB26s, I dont know what to make of it.
Is this a sign of an oil pump failure? The oil level is fairly consistent as per the dipstick. As far as I know, there are two oil pressure sensors on an RB26. I am using RB25 oil pressure sensor at one of the locations, under the intake manifold.
How do I confirm what could be causing it? Could leaning out cause a drop in oil pressure when engine is hot? My engine temp gauge stays at where it should be, which is a little above the halfway mark.
What are the visible and obvious signs of oil pump failure or the drive giving up? Can you change the oil pump or the pump drive without pulling the motor out?
Any help would be appreciated.
What I am observing in my recently installed RB26DETT in my GTS is that on cold start, the stock oil pressure gauge is showing the pressure to be at the '4' (halfway) mark. Then it slowly drops to the quarter (2) mark between 0 and 4. After warming up and driving it for a bit, it moves close to zero, and sometimes drops to zero. When I rev the engine, it goes back up to around the quarter mark (2). And after driving it hard, the pressure seems to stay between 0 and 2, with the needle moving up very slowly when I rev it. I am worried and having no experience with RB26s, I dont know what to make of it.
Is this a sign of an oil pump failure? The oil level is fairly consistent as per the dipstick. As far as I know, there are two oil pressure sensors on an RB26. I am using RB25 oil pressure sensor at one of the locations, under the intake manifold.
How do I confirm what could be causing it? Could leaning out cause a drop in oil pressure when engine is hot? My engine temp gauge stays at where it should be, which is a little above the halfway mark.
What are the visible and obvious signs of oil pump failure or the drive giving up? Can you change the oil pump or the pump drive without pulling the motor out?
Any help would be appreciated.
Comment