Quote:
Originally Posted by DrBacon
As previously mentioned, I'd guess the oil pump pressure relief valve is sticky and stuck open. Shims won't do anything to fix this other than just making it harder to open that valve in the first place. Replace the relief valve, it should be accessible if I recall right with only the oil pan removed.
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Yes and no, the added volume and pressure this pump puts out might be triggering the relief too early causing a massive dump of pressure making it seem like it's sticking which is why a shim would work. It would compensate this force by compressing the spring a bit more.