No Spark, how to solve?

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Oct 17, 2009 | 06:56 PM

00Formula00

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From: Bay Area, CA

No Spark, how to solve?

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.

Oct 17, 2009 | 07:04 PM

turbov6bryan

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From: overland park kansas

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

BW

Oct 17, 2009 | 09:29 PM

conan

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From: Back in the Burg

Quote:

Originally Posted by turbov6bryan

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.