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Registered
Join Date: Feb 2010
Location: Lafayette, Louisiana
Posts: 101
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More information
The compression is perfect on all cylinders and all plugs look great. Actually compression is very high like the valves are not opening all the way (closed for too long while running) The backfiring indicates the same. Maybe something wrong with the VANOS on that bank? Computer isn't picking up that though...
The oil pressure light is only on at VERY low rpms (where it "idles" at right now) and flickers with engine revs at idle only. It is OFF at anything over 500 rpms (this honestly seems normal). I don't think the oil pressure drop could be anything but in the cylinder head for some reason. Again, we haven't run it very long so maybe it needed to prime up more.
The scan tool is a SNAP ON solace scan tool - one of the best in the business from what I understand. I did try swapping sensors from bank-to-bank and it did not change anything.
Keep the ideas coming! I appreciate it!
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Patrick Harris
1977 Porsche 911S: Racecar build - Follow @ www.patricksporschebuild.blogspot.com
1978 Porsche 911 SC: Petrol Blue, Steel Turbo Body, Black Interior, Sunroof. Another project.
1994 Toyota Supra Twin Turbo, 6 Speed, Hardtop, Baltic Blue (1 of 17).
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