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Running rich under boost 700 1990

posted by  Aye Roll on  Sun Jul 4 16:16 CST 2004
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last visit: Tue Oct 14 21:08 CST 2014
[RELATED]

Black smoke when under boost means not all the air is getting to the engine.
You have a vacuum leak somewhere downstream of the turbo.
Check all your intake plumbing- somewhere in one of the rubber air hoses, there's a hole. My guess: the one on the outlet side of the intercooler, a short hose about 3" long.
Good luck!
--
Rob Bareiss, New London CT ::: '87 244DL/M47- 229K, 88 744GLE- 218K, 82 245T-181K Also responsible for the care and feeding of: 88 745GLE, 231K, 87 244DL, 239K, 88 245DL, 246K






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