Luther Gulseth wrote:
How common is it for the valve stem seals to be a major source of oil burn? My
coupe is buring (I'm absolutely positive it's NOT a leak) about 1qt/300mi. The
ground under my car at work (assigned parking-same each day) will only have 2-4
tiny drops of oil, the rear underside, bumper, and backend of my coupe are dry
and clean. While on my SD (I know it's leaking from the turbo return pipe and
braided line) the rear bumper and trunk shows oil splatter. I've read the
manual *.pdf's (05-270, 05-235, and 05-250) and it seems to be an easy job and
the parts are less than $25 from Rusty. Any thoughts on this? TIA all,
Serious oil consumption because of stem/seal wear is rare. If broken or
displaced, that does happen (but almost only when somebody has been
playing with them). There is very little intake manifold vacuum to draw
oil into the intake stream (like there is on gasoline cars and 30+ year
old MB diesels). Usually very high oil consumption is because of oil
being pushed over in the breather pipe (very common if the 3 piece
breather is still being used) or because the oil return is not properly
functioning. Occasionally (still VERY rare) turbo seals will allow oil
consumption to get out of hand and leaks from the turbo oil return can
result in considerable oil loss. Blown head gasket can cause that as can
a broken ring or scored cylinder wall. Oil burning to that degree will
result in smoke. Oil leaking won't.
Marshall
--
Marshall Booth (who doesn't respond to unsigned questions)
"der Dieseling Doktor" [EMAIL PROTECTED]
'87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5
turbo 237kmi
