Lxjoshxl

Hi guys, I had a fresh rebuild motor done at machine shop, went to start it refuses to fire right up. I feathered the throttle and it ran for a little bit sounded really rough shut off.
1. I have fuel pressure at the rails.
2. Bigger cam
3. Egr tube broke tried crimping it shut
4. noticed the crank sensor wires were bare re taped them up.
5. Does the coil harness matter on placement of coils on the wires I read that they’re numbered but I cannot see them.
6. Sent out for emailed tune not sure if that’s the issue but I figured I could at least get an idle out of it. Thanks guys any help is appreciated.

Ls7colorado

iTrader: (3)

How much fuel pressure do you have?
how big is the cam?
Is the EGR tube to the intake sucking air?
Is the crank sensor reading correctly?
The coil harness does have a driver and passenger side plug, but on a factory harness its kinda hard to cross them up. Is this a LS swap or factory setup?
Is the PCM still a stock tune with big cam? If so it will never run smooth

Old Buzzard

There's a forum for such issues....

Lxjoshxl

Swapped coils on drivers side they did get mixed up taped up new pigtail on crank sensor now tuner can read that then was throwing a p0200 code which is now gone. At this point it will idle but stft spiking to 50percent