Quote:
Originally Posted by juld0zer
My belief is they redesigned the oil supply system on the black top engines for this reason. The standard method of oil pressure control/delivery is not sufficient for dual VVT in this engine. The N52K has a variable delivery oil pump so it is capable of more volume at low RPM. Essentially, I believe the noise is actually from a lack of oil supply to the VANOS adjusters at low RPM but moderate to high load situations. What oil and oil viscosity do you use?
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N52 from start had "volume flow controlled" oil pump, it didn't change between N52 and N52K:
https://www.newtis.info/tisv2/a/en/e...ve-msv/1poWb2I
I never heard any pinging with my engine 06 N52. I do get the sticky lifter tapping from time to time. Nor my idle had been noisey, manual transmission. The only two times I had idle problems were when my MAF connector was dirty and didn't provide good electrical connection and when I had a vacuum leak at one of the pcv air connections after starter replacement.