Oil Pressure?
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Oil Pressure?
I just drove my car from getting tuned and the oil pressure has dropped from the usual 40-60 driving around town to 20-30. Anyone have any ideas? They would be greatly appreciated.
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Originally Posted by 1999ssls1
I just drove my car from getting tuned and the oil pressure has dropped from the usual 40-60 driving around town to 20-30. Anyone have any ideas? They would be greatly appreciated.
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Originally Posted by 1999ssls1
Its making a slight knocking noise when im in gear, but not when I rev. It was perfect before the tune.
heres another thread with similiar symptoms like you have. https://ls1tech.com/forums/generation-iii-internal-engine/644646-tapping-over-3k-rpm-s.html
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Originally Posted by 1999ssls1
Could the tune have anything to do with it? What does you guys oil pressure range from?
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My car has never had very high oil pressure...and it definitely doesn't idle at 40 psi...mine usually idles at around upper teens to low 20's...and only breaks 40 psi when its cold...
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Originally Posted by rob2269
My car has never had very high oil pressure...and it definitely doesn't idle at 40 psi...mine usually idles at around upper teens to low 20's...and only breaks 40 psi when its cold...
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The new noise and oil pressure drop are not good signs. I suspect that it is probably a rod bearing (although it could be a main bearing, but less likely). The drop in pressure is because you now have more oil clearance between bearing and journal. If it were just the pump (and there is no reason that tuning the engine would cause it to fail) you wouldn't be getting the knocking noise. When you rev the engine, other engine noises mask the knock that can be heard at low RPM. If you had bent a pushrod (which I doubt since you have hardened Comp pushrods), you wouldn't have a drop in oil pressure. All of this is speculation on my part, but if it were mine, I'd be pulling the pan.
Best of luck in this adventure,
Steve
Best of luck in this adventure,
Steve
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Originally Posted by 1999ssls1
I would but the place im doing it at, I only have maybe saturday to do everything.