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Old 10-27-2003, 11:29 PM
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Join Date: Mar 2001
Location: Strawberry Plains in East Tennessee
Posts: 61
and what is THIS?

I've found something "new" with the '72 220D's motor, new to me. Underneath the air intake hose that goes from the oil bath up to the top of the engine (compartment)... is what looks like a rubber fitting for a hose to fit into. It's attached firmly and appears important. I checked it with engine running and a significant amount of air was moving through it. Would someone knowledgable enlighten me please.

1971 250
1972 220D
1993 Lexus ES300
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Old 10-28-2003, 09:57 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,746
My guess is that it takes a hose from the valve cover. Compression that gets past the piston rings (blow-by, some is acceptable) is routed to the air cleaner to be ingested by the engine so you don't leave a [second] trail of oily smoke.

95 S420
91 300SE
87 300SDL
83 300SD
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