no start

[jeff73]

I put a 6.0 in a 73 Camaro out of a 09 sierra. I t has a texas speed cam long tubes and ls 3 intake. I am very new to this and am probly asking the same question again, as every body else. The motor wont start. I have power to the injectors and the coils. I deleted vats the starter circuit and put the tcs patch in. I am running a t56. The harness is from bp automotive, and the PCM was from the donor truck so I don't think that is it. All the circuits I have tracked are good which include the wire to the pcm for the injectors and the coils. The scanner I had on it gave me tach cam and crank signals. Threw a bunch of DTC's, some that said the PCM could be bad but nothing concrete. Am I just missing something? I Any help would be great. Jeff

[93camaro_zzz]

Have you verified that you are getting fuel and spark?

[jeff73]

Not getting either one. I have fuel to the rails. checked the inj plug with a pick light and nothing. power to it. The pcm wont fire it.

[93camaro_zzz]

Real simple check, have you checked the coil pack and fuel harness ground? It is usually on the back of the drivers side head. Or in a swap vehicle it could be anywhere behind the motor.

[jeff73]

Yes. The grounds are attached at the back of the head. But doesn't the pcm ground the inj to open it?

[93camaro_zzz]

That's correct. If it were me in your shoes, and I had made sure all of my simple stuff was good (fuses, grounds, etc) then I would whip out my trusty wiring diagram and a multimeter, and begin to waste a few hours of my life. lol No other way around it really. You can find the LS wiring diagrams all over the internet.

Edit: Also, I would definitely check all of my PCM grounds, if I recall correctly there are 4 of them.

[jeff73]

Yuk. That is not what I wanted to hear, but was in the back of my head. Thanks.

[jeff73]

One more thing I don't understand is that the DTC's between the Editor and scanner are not the same. I would think that they would be.?