My 90 Acura Integra won't f***ing start. Whenever I drive the car it would kinda sputter under 4k at partial throttle, then it would smooth out. Then I went to the gas station and filled my tank, that is when it decided not to start. I waited a minute and it started. About a mile after I left the gas station it started hesitating really bad (almost giving me whiplash). When I pushed in the clutch it died again and wouldn't start. I replaced the fuel filter and now it will turn over and almost start and it will either backfire out the exhaust (smells like gas) or it will make a pop sound from the intake. I don't understand; the pump primes, I have fuel, I have spark, but it won't start. PLEASE HELP!!!!!!!!

BTW, the car has 229k on it and I just replaced the air filter, fuel filter, plugs, wires, cap, and rotor.

 

Does anybody think that this could be caused by a faulty fuel injector(s)?

 

Check your timing out...

 

Also make sure you have your plug wires in the correct order. A freind of mine had a tune up done on his DA9 and they got the plug wire order mixed up, and it destroyed his engine.