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Re: 1988 chevy 4.3 smell rich runs lean
more info ... come to find out its a 88 model truck with a 91 motor and wire harnness/computer. as far as temp snrs the values look right enough for me . computer signal vs actual block temp is acurate.the exhaust has been chopped at one point (no converter and stright pipe to muffler) unknown when that happend. but i am gona rule out the exhaust at this point. the issue seems to get worse the longer its driven .
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