Sputters backfires and stalls

1999 CHEVROLET TAHOE
206,918 MILES • 4.7L • V8 • 4WD • AUTOMATIC
Avatar
ROLAND BRUCE
  • MEMBER
  • 1 POST
Have to pedal the gas to keep SUV running and unless you gas it the whole time it shuts down. It pops and backfires loud as heck when doing this. I have changed the plugs wires and distributor. Still popping and backfiring will not run without gassing it the whole time.
Sep 23, 2018 at 5:23 PM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It sounds like the spider fuel injector has gone out. Can you tell me which engine you have? CPI or PI? If you are not sure please send me a video or picture of the engine. A video of it running and stalling would be best. You can upload it here in your reply from your phone.

In the meantime this guide can help:

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

Please let us know what happens.

Cheers, Ken
Sep 25, 2018 at 11:00 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.