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Old 02-22-2008, 09:11 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,754
ARV = air recirculation valve. It's that thing attached to the compressor housing with 3 10mm head bolts. It leaks air from the compressor outlet to the compressor inlet to soften the onset of boost, or some such garbage. Does something to warm up the trap too IIRC.

An all too common oil leak is the head gasket by the #1 exhaust runner.

87 300D
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