So I was having problems with the ignition, backfiring to be exact: https://ls1tech.com/forums/generatio...e-4500rpm.html

So we just changed the plugs and the wires just to be safe. Now the car won't start. I drove it to the spot we did the work on it with no problems. Now, when we try to start the car, it cranks but no firing. There is fuel in the rails, we check both sides of the wires with an extra plug, no sparking.

Any ideas what could have happened to make the car not start now?

Let me know any ideas.

 

Is the pcm getting the info from the crank trigger / show any rpm at all on a scan tool while cranking?

BW

 

X2

When I built my new engine I forgot to plug in the crank sensor and the tach didn't move and I had no spark. Pluged it in fired right up. I scaned it with HP tuner and it had a low volt on the crank trigger.

 

Is crank trigger the same thing as crank position sensor?

 

Yes it is, and its on the pass side of the engine behind the starter.

 

Did you replace it yet to see if it fixed the car?

BW

 

Did you unplug the coils? I know on my car I had to take the coils off the valve cover to get access to ther rear plugs on the pass side.