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93 Chevy full size pu 4.3 engine. missing bad and blck smoke could it be oxygen sensor?
Wiki User
∙ 15y ago
possible but not likely, pull the breather and watch the injector spray patterns. They should look the same in a nice fan, if one is pouring in fuel u need to replace the bad injector NEW ANSWER: Check the map sensor, start engine and remove vaccume hose it should have vaccume on the hose. Coolent sensor could be grounded are shorted.
Is check engine light on ? If so have engine scaned by traned mechanic and he'll tell you whats wrong. GOOD LUCK
Wiki User
∙ 15y ago
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