97 heavychevy
Newbie
I have recently buttoned my l29 back up but having issues getting it running. Will crank, backfire through exhaust every once in a while, but won't start. Cranking is uneven, seems to be a timing issue, but no codes are present. Has new injectors, new coil and new distributor. Fuel pressure is good, 55 psi if I remember correctly. I am limited as far as hooking up and reading ECM, I was using HP tuners scan tool to read the codes off. It was showing MAF reading .32 key on engine off, but this could just be a false reading. Unplugged MAF still would not start. Any help would be appreciated.