The engine will not start it is just cranks right through. It had 1 backfire when i tried starting it the first time after the customer gave me the keys and it has never backfired again. Ive even tried turning the spark plug wires around( number one and number 2) and it still doesnt backfire. Checked the injector wires and they are pulsing correctly. Yes the engine is timed correctly and the car has gas. Even grinded the valves to let them sit correctly. Car has new head gasket. The engine doesnt have a crankshaft sensor so thats out of question. Ive been working on this engine for 5 days now and its the same thing. Never seen anything like this before and im baffled.
Also its a manual transmission if that helps
Well start with my video fixing a car that cranks but doesn't start up. And pray it's one of those and that somehow the engine job wasn't botched up many things can go wrong pulling off ahead I would start by doing a wet and dry compression test of the engine to see if it's totally sound or not first