I have a 94 gmc seirra z71 5.7 liter 350

Asked by Jason Dec 09, 2013 at 08:21 PM about the 1994 GMC Sierra C/K 1500

Question type: Maintenance & Repair

Truck starts up idles great, drives
great untill trunk warms up, still idles
good, will drive fine untill  you push
pedal down to floor, it starts missing
and backfires

3 Answers
40,185

James answered 11 years ago

the old high tension wires are letting the spark find an easier way to ground, look fro grey powder around heavy wires at loss spot

Mark helpful

Your Answer:

Related Questions

Sierra C/K 1500

Looking for a Used Sierra C/K 1500 in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search GMC Sierra C/K 1500 Questions

CarGurus Experts

  • #1
    dandyoun
    Reputation
    410
  • #2
    Andrew Olsen
    Reputation
    270
  • #3
    Greg Adle
    Reputation
    260
View All

Find great deals from top-rated dealers

Search

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.