The engine will not stay running?

Tiny
MICHAEL'S
  • MEMBER
  • 1999 GMC SAFARI
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
It has good spark and good fuel pressure. But the injector pulse stops as soon as it starts. It runs until cylinders burn up all fuel.
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Tuesday, September 20th, 2022 AT 1:36 PM

1 Reply

Tiny
KEN L
  • ADMIN
This sounds like a bad VCM, or you have an injector that is shorting out. Do you have a check engine light on? If so, you can get a code scanner from Amazon for about $20.00.

Here is a guide/video to show you how.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a scanner link:

https://amzn.to/3Qi1SS6

If there are no codes, I would try replacing the fuel injector spider if you haven't done so already, (AC Delco brand). Here is how to change out the VCM as well in case you need it. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.

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Wednesday, September 21st, 2022 AT 4:48 PM

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