We have a '95 Chevy Blazer/4.3 ltr/center port injection/120k (approx) miles.
Summer 2006 rebuilt heads/replaced all gaskets/replaced fuel injector system/replaced knox sensors/replaced oxygen sensors/replaced distributor cap & rotor/replaced plugs/replaced water pump/replaced fuel filter/ replaced tempature sensor/all terminal wires to sensors seem to be clean and reinstalled and checked ok/all ground wires are attached to the back of the heads.
A starting problem developed a few months after all of this repair work and has continuely gotten worse until it won't start at all.
A week ago replaced radiator and 3 days later truck won't start at all.
As the starting problem was beginning to happen we would have to put the key in the ignition turn the key and wait for the fuel pump to stop and then crank it to start. Sometimes it would take approximately 3 - 4 tries before it would start for the first time then after that it would usually start unless it sat for a long time before starting again (as in over night or after 8 hours). This was not something that happened continuoulsy, sometime it would just start right up w/o hesitation. Problem seems to have worsen w/colder weather, and now it won't start at all.
After reading the other entries on this same problem everytime it was said it could be the fuel pump &/or fuel filter. We have tested the fuel pressure, and it is 54 - 56 psi every time, we have checked the fire on the engine/the coil fires & the plugs fire but it still won't start. Air filter is good/all emissions have been electrically tested and work. We are wondering if the power train control module as well as the anti theft system could have anything to do w/this problem. We purchased this vehicle in Dec 2004 and replaced the factory radio w/a stereo & cd changer prior to knowing anything about a anti-theft system and truck had been running perfectly fine until the cracked head problem. We have not replaced plug wires because the plugs fire and when running was getting good gas mileage.
Any suggestions to this problem would be greatly appreciated.
Russ & Lisa
have the same problem?
Tuesday, January 23rd, 2007 AT 9:59 PM