I think my clogged PCV orifice resulted in:

a.) When I stop at a light or drive thru, the engine will idle fine, for a bout a minute then begins to lug. I envision the crank case pressurizing, and putting negative force against the underside of the piston.

b.) large accumulation of milky oil in air cleaner and in the valve covers

c.) at air temps below -20*C sensor plate ices up flooding engine. (excess moisture coming thru the fresh air hose from air cleaner because the other side of the PCV system is plugged.)

I've already noticed an ENORMOUS increase in fuel economy, just on the motion of my fuel gauge, as well as a marked improvement in acceleration!

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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