Truck will not start

Tiny
BETH NIXON
  • MEMBER
  • 1996 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 3,020 MILES
Put in a new water pump. Started it up it ran for thirty seconds to a minute then it shut off. Tried starting it back up and it was just cranking it. Already replaced the crankshaft sensor. Not sure why it is not starting. Help!
Monday, December 3rd, 2018 AT 9:50 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,716 POSTS
Hi and thanks for using 2CarPros.

Did you try scanning the computer to see if there are trouble codes stored which may indicate the problem? Here is a quick video:

https://youtu.be/YV3TRZwer8k

Next, you should check to see if the engine is actually getting spark and fuel to the engine. Here are links that show how:

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

https://www.2carpros.com/articles/how-to-test-an-ignition-system

If you find you are getting spark and fuel, then try this. See if the engine will start for a couple seconds using starting fluid. If it does, then it is fuel related. If it does not start, then it is not getting spark or there is internal issues.

If it does start, follow this link to see if the injectors are getting power.

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

____________________________

The attached picture shows the manufacturer's specs for fuel pressure.

Here is an additional link that discusses cranks but no start conditions:

https://www.2carpros.com/articles/car-cranks-but-wont-start

See if there is anything there that helps.

Do these things and let me know what you find.

Take care,
Joe
Was this
answer
helpful?
Yes
No
Monday, December 3rd, 2018 AT 6:34 PM

Please login or register to post a reply.

Sponsored links