2.5 yj Wont start, Searched forums like Crazy!
Hey guys I don't post threads really because I search a lot and usually find my answers. But here's my problem, 94 2.5l will crank but won't start. I have spark, fuel, and compression ( one cylinder is 100psi the rest are 140psi) and the motor won't start. I did the ECU check, and I hear the fuel pump and CEL comes on when I turn the key. Fuses and relays all seem good. When I crank I hear a loud air puffs coming from my exhaust manifold downpipe connection that I never heard before. But otherwise then that is it possible that my ECU is still bad even though the fuel pump and CEL still works?