1988 K1500 5.7l 350 wont start

[gaquackster]

I replace the plug wires on this truck and now it wont crank the motor will turn over but wont crank. I traced wires back to correct cylinders and firing order 4 times with firing order being 1 8 4 3 6 5 7 2 ?? is this even the correct firing order? The motor turns over sounding fine but wont crank and it still sounds like there is one cylinder not firing I have new distributor new ac delco plugs good fire to plug wires and new plug wires..i even reinstalled old wires and same thing happened. please help me I don't get on here much so if you could text me 7063181884 that would be fastest way

[maxwedge]

Is this carbed or throttle body injection? Tried to see if it is getting fuel?

[gaquackster]

sorry it is fuel injected and I believe it is getting fuel. how can I check to be certain? this is my buddies truck I drive a diesel so I don't have to worry bout plugs haha

[maxwedge]

Remove the air cleaner, when turning over the engine fuel should spray out of the 2 injector nozzles.