GM Repair Problems? Ask GM Repair Expert Now.
Hi, my name is ***** ***** is usually a bad fuel injector returning too much fuel to the tank on start up, it will drop the rail pressure and pressure to all the injectors, have done a return fuel test yet?
yes, and then crank it over , the fuel return should be less than 11 ml, if it is any more, then you hav one or more injectors returning too much fuel, if its lower than 11 ml, then suspect the lift pump, another test is to push the black button on top of the lift pump to prime it up before trying to start, if it starts right up then, replace the lift pump,Tim
most of the time, its a bad injector,Tim