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Cranks and fires but will not start

Tiny
ANDREW LANE
  • MEMBER
  • 1999 CHEVROLET TAHOE
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
My SUV will not start. It has good spark and is getting plenty of gas but still will not start. I can here the engine fire as it cranks but it will not keep going and sometimes sputters a little bit after I stop turning the key. Also, it will not completely connect to code reader. Will not scan catalytic converter, EVAP, o2. Says there are emissions related engine DTCS but will not list. Any ideas?
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Monday, January 15th, 2018 AT 2:00 PM

3 Replies

Tiny
CATAFINA
  • MECHANIC
  • 98 POSTS
Check your fuel pressure.

Go here: https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

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Monday, January 15th, 2018 AT 5:37 PM
Tiny
ANDREW LANE
  • MEMBER
  • 1 POST
Fuel pressure is 60 psi.
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Tuesday, January 16th, 2018 AT 2:10 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,648 POSTS
Hello,

How does the engine sounds when it is cranking over like it has compression? Here is a guide to help us confirm.

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

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Friday, January 19th, 2018 AT 11:28 AM

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