It is a 91K-5 blazer, stock with the exception of headers and tbi spacer.Over the last cople of years was not driven much. Recent work done. Had the same problem before did this work. I repleced the plugs, wires,cap,rotor,tps,gaskets for the tbi and spacer, vacuum lines, new k&n air filter,complete new exhaust cat and muffler, fuel filter. I think that is all,as far as I can remeber. Does not throw a code, have a scanner. When you lightly press the gas, such as backing up, it tries to flood out. Had the wife do it while I sat over the motor and watched the injectors. Can see them dump a load of fuel in. Stumbles and then clear up. Will cause it to die unless you press the pedal more. Oh yeah forgot that I have ran 4 tanks of super with injector cleaner. Thanks for any help.