Quote:
Originally Posted by rjahl
If you are cranking with the ignition key, ok perhaps the intake valves probably lift enough to get good cylinder filling. I've never logged the Valvetronic motor during the start.
If you are bumping the starter only, I'm not sure the intake valve will open far enough to allow proper cylinder filling. No air in, no compression pressure.
Just like the old days when you had to open the throttle or throttle body to perform a compression test.
Have you done a compression test on a valvetronic motor? I'm curious to hear from some one who has.
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No i have never done it on a valve tronic system. I ll try to search for the minimum lift, maybe there will always be minimal lift (not zero)
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E90 328i n52 auto, 3 stage IM, k&n drop in, charcoal delete, silicone boot, ebay headers, secondary cats delete, bpc tune. MILVs (soon), MT swap (planning)