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Engine firing order please?

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, your saying it cranks good, but won't start? The litre size is on the diagram. C1500


https://www.2carpros.com/forum/automotive_pictures/170934_silverado_firing_order_1.jpg

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Thursday, September 3rd, 2020 AT 6:42 PM (Merged)
Tiny
RYDOG1388
  • MEMBER
  • 1 POST
  • 1996 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 220,000 MILES
Changed plugs and wires and got firing order wrong at the distributor initially, checked your forum, then got correct order, I think. Now I have little power and repeated back-fires. Any suggestions, kind of stuck where I'm at, literally!
Thanks in advance!
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Tuesday, April 20th, 2021 AT 2:13 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

I attached the diagram for the cylinder location and wire location below for you.

https://www.2carpros.com/articles/engine-backfires-while-running

Roy
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Tuesday, April 20th, 2021 AT 2:13 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
If you have the firing order correct, I would check the gap on the plugs to be sure they are correct.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Inspect the inside of the distributor cap as well for any cracks or carbon tracking. That will also cause a backfire.

Roy
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Tuesday, April 20th, 2021 AT 2:13 PM (Merged)

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