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Old 05-29-2016, 11:04 PM   #7
plastic_indian
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AKA: Mark
Join Date: Apr 2008
Location: Naptown, IN
Posts: 422
Vehicle: 04 2DS
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Verify the oil pressure using a known good manual gauge. Is this build running a HV and/or HP oil pump? In an extreme case, perhaps excessive oil pressure to hydraulic tappets is floating the valves...

Is the cam a custom grind (is it ground 'straight up' or with a built-in advance?)? Are the cam/crank gears adjustable? Was the cam degreed during the build to verify its position? Was valve installed height, coil bind, general valve train geometry verified?

A cold/warm compression test may provide some information. Disable fuel and spark, then test with the throttle wide open.

Testing crankcase pressure may shed some light here as well.
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