[tkrolo]

Ok, I've got a 93 240sx se coupe with around 100k miles. Been messing with stumbling and backfiring for a couple of months and near my wits end. In its current state, it will start and run beautifully for 10-15 minutes, until it gets warmed up. After that, its like it isn't the same car. From a stop, you have to ride the clutch a give it extra fuel or it will stumble and die. After you get going you have to continue to baby it by easy onto the gas or it stumbles and backfires, at times, violently. It seems to idle fine and run fine once you get to operating speed as long as you don't have to touch the gas. I've replaced the fuel pump, filter, alternator, cts, tps, and adjusted the timing, but nothing helps. If you try to start it before it cools down completely, it takes several extended cranks to get it to fire. I just bought a set of injectors hoping that this is my problem, but any other suggestions would be GREATLY appreciated. Thanks in advance.