Hello, I have a 93 s10 blazer 4.3l(w) with 47000 original miles and I'm having some minor problems with it. It starts right up when its cold, but when its warm, it takes a while (5-10 secs. of cranking while pressing the gas pedal) before it will start. When it does start, it will shoot a cloud of smoke and black carbon out the exhaust, and it will also idle rough and surge. It mainly happens when it is warm outside or the engine is warm. It runs fine while driving, but will idle rough when at a stop. I have replaced the IAC and the TPS, and the EGR was just serviced. The truck is in such good shape with super low mileage, so I'm really confused as to what could be wrong with it, any suggestion would be appreciated.
Sunday, April 22nd, 2007 AT 1:23 PM