I've been looking at all angles, and I'm stumped. I drive a 1990 Integra GS. Here's the story: I filled up my car about 3/4 full of gasoline. I was driving down the highway at lunch and it started sputtering, choking, backfiring and then died. I got it going by popping the clutch, but it died again. There was a check engine light, but I accidentally shut off my car, so I didn't get a chance to pull the code. A mechanic guy helped me push the car off the highway with his van, to a nearby parking lot. He said from what I described it could be either the timing belt or the fuel pump, and he did some quick tests with the fuel lines and told me he was 100% sure it was the fuel pump that went out. Fast forward: I changed the fuel pump, and the car still won't start. I took off the valve cover, timing belt is in tact. (I had had my car looked at recently for a tune-up, and the timing belt was strong.) I am lost! Has anyone encountered this before? With the new fuel pump in, when I try to start the car, it's trying to start up, plenty of spark, but I hear a couple backfire-type sounds and it just won't start up. HELP PLEASE! I need this thing running again!