Quote:
Originally Posted by bob_98sr5
guys,
thanks for the answers. I'll perform the cap off test and see what happens. im also going to crank down the valve cover bolts just a tad bit more in those 2 leaky places.
what puzzles me is that I've changed the valve cover gasket, the breather tube, and disconnected the EGR as well within the last year per many people's advice. nevertheless, ill continue to monitor it.
thanks, gents.
bob
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Bob, just a shot in the dark, but is there a chance something is blocking your breather tube? That might cause the normal blowby gasses to try to escape elsewhere. Maybe check the other end of the tube to make sure there isn't an obstruction.
Even if you had noticeable blowby, I don't think the valve cover should leak. My 240D has quite a bit of blowby at 360k miles, approaching air-cannon status, but since I replaced the valve cover gasket and tightened the hose clamp, I haven't noticed much leakage, if any.
I would also make sure that the oil isn't coming out of the intake where it connects to the engine. Mine is leaking there, and I could see how it would look like it's coming from the valve cover. A new gasket (and the little gasket for the crossover pipe) isn't too expensive.
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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)
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