The truck is running extremely rough,something keeps causing the spark plugs to foul out instantly any ideas?

1999 CHEVROLET TRUCK
180,000 MILES
Avatar
CHUCK COOK
  • MEMBER
  • 1 POST
I had just got done changing the plugs on the truck and it was running great for a couple days, my wife was driving one day and she said the truck smelled hot and just started running real rough and it's been that wAy ever since it's undrivable, can't afford to take it to a shop.
Sep 12, 2011 at 7:24 PM
Advertisement
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.
Avatar
PROMECHANIC
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 536 POSTS
Start by taking it to an auto parts store and having them check the codes. They will normally do this for free.
Sep 12, 2011 at 7:30 PM
Avatar
PASSDAHOTSAUCE
  • MEMBER
  • 3 POSTS
I've learned that in the 99 Chevy Trk/Sub 5.7 only the AC Delco Spark plugs work. 5yrs ago I changed my spark plugs 3 times in the same month and it ate those spark plugs up. So i shelled out cash for the $8.99 each AC Delco's and problem was fixed. I still have the same spark plugs in my 99 Sub today. I clean them with a battery post wire terminal cleaner and there as good as new.
Sep 14, 2011 at 2:27 PM
Advertisement
Avatar
WRENCHTECH
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 20,761 POSTS
"I clean them with a battery post wire terminal cleaner and there as good as new. "

That's the wrong thing to do. It leaves metal tracks for spark to jump over. NEVER take a wire brush to a spark plug. You should never need to anyway if the engine is running correctly.
Sep 14, 2011 at 2:34 PM