Quote: Put a pressure gauge on the valve cover(inches of water or a 5 psi) and measure the crank case pressure.... should be near 0, you would love to see it negative but if it shows near 0 check the intake again(use clay to check the gap)
is that with one side blocked off? or does the pressure gauge go on the breather side with the pcv still attached?
so there is some blowby in any engine, if not the rings would be 100% sealed. that blowby creates pressure that must escape somehow, in this case through the pcv and breather. so for there to be negative pressure that would mean that the vacuum from the engine, via the pcv, is creating something of a vacuum in the crankcase, correct?
