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Spark and fuel good, will not start

Tiny
NIC VAN FLEET
  • MEMBER
  • 1993 GMC SIERRA
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 96,000 MILES
I have a the SLE K1500 5.7L/4L60. I replaced the cap and rotor, coil, spark module, and just did complete timing replacement about a year ago. It has good spark and fuel but will not start. Does not sputter or anything. I am at a loss and ready to scrap this thing. Checked all fuses as well. Any ideas or pointers are welcomed. Thanks!
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Tuesday, November 7th, 2017 AT 3:03 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,940 POSTS
Yep, lets start by checking the engine compression to make sure we are not chasing our tail.

Here is a guide:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please let us know what happens.

Cheers, Ken
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Wednesday, November 8th, 2017 AT 1:17 PM
Tiny
NIC VAN FLEET
  • MEMBER
  • 2 POSTS
Okay, I apologize, it looks like I am not getting spark at the plugs. New cap and rotor and spark control module, but still no spark at plugs.
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Thursday, November 9th, 2017 AT 10:51 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,940 POSTS
Do you get spark from the ignition coil?
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Friday, November 10th, 2017 AT 9:48 AM

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