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ROUGH IDLE AND ITS KILLING MY PAYCHECK WITH GAS BILL
1998 GMC C1500
June, 25, 2012 AT 12:13 AM
I have a 98 5.7 vortec it has rough idle mostly when ur at a redlight in drive blows out black smoke when u get on it strong running rich smell
FOUND 2453 RELATED QUESTIONS
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June, 25, 2012 AT 12:32 AM
-Possibilities for running too rich: 1. Excessive fuel pressure can be cause by restricted fuel return line
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.
June, 25, 2012 AT 12:44 AM
Wow ok a mechanic changed the head gaskets because one blew the heads wete checked and there not cracked it never did it until they fixed the gasket
June, 27, 2012 AT 1:09 AM
Might want to refer to this link for more information:
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