I have a 1991 Chevy S-10 2WD p/u. It has automatic trans, 4.3 V-6, a/c. Here is the problem: At idle the engine runs very roughly. I have taken to a mechanic friend and he pulled no codes from the truck. It uses excessive fuel and I know we are getting cylinder wash as the oil smells like gasoline after a few thousand miles. General Motors 4.3 L Powertrain Generator Models: 30--45 kW TP-6103 1/01 Service. CAUTION
Problems with Fuel pump Chevrolet Blazer 1997 by jdsem Oct 11, 2005 10:19PM PDT My 1997 Chevrolet Blazer, Model S 10506, Vortec 4.3 Liter has given me problem with the fuel pump.