sputtering after complete tuneup
5

Asked by doughboy7567 May 10, 2017 at 11:22 AM about the 1993 GMC Sierra 1500 K1500 4WD Extended Cab SB

Question type: Maintenance & Repair

I did a complete tune up on my 93 GMC Sierra K1500 5.7 Liter 350, Plugs,
Wires, Cap Rotor, ICM, coil, Fuel Pump Relay, Etc. Has new Fuel Pump
and Filter 2 years ago and the motor sputters like it has a dead cylinder or
miss fire even under power while driving. Checked all plugs for right gap,
and wires for bad ones and nothing is bad, checked out the TBI all is good
there also, good spray pattern and fuel pressure.  Thinking it may be a
ground issue from motor to frame or something of the sort, frame ground is
rather rusty. Any Ideas please would help alot getting very frustrated and
about to junk the truck.

4 Answers
157,445

Bob answered 6 years ago

Frame ground is rusty? Clean it up and reattach it. Did it run properly before you "tuned it up"?

Mark helpful
5

doughboy7567 answered 6 years ago

yes truck ran great no real issues with it, was even thinking that the pick up coil on dist. may be going bad

Mark helpful
157,445

Bob answered 6 years ago

Is it possible that one or more of the spark plug wires is on the wrong cylinder either at the spark plug end or at the distributor cap?

Mark helpful

Your Answer:

Related Questions

  • sputtering after complete tuneup 4 Answers

    I did a complete tune up on my 93 GMC Sierra K1500 5.7 Liter 350, Plugs, Wires, Cap Rotor, ICM, coil, Fuel Pump Relay, Etc. Has new Fuel Pump and Filter 2 years ago and the motor sputters like it ha...

    1993 GMC Sierra 1500 K1500 4WD Extended Cab SB

    -

    Maintenance & Repair

  • Why is my vehicle sputtering when turning over the ignition after filling up the gas tank to full? 3 Answers

    Truck has trouble starting after filling gas tank to FULL. It will start but ,sounds like its sputtering and struggling to start. After starting the truck, it will run great until its next fill up a...

    2007 GMC Sierra 1500 SLE1 Crew Cab 4WD

    -

    Maintenance & Repair

  • Sputtering and stalling. Fuel system problems? 98 GMC Sierra 1500 5.0 V8 2 Answers

    Truck started sputtering and stalling, but would run fine once it had been driven for a little while. Sometimes it would start normally, other times it would struggle. I replaced the fuel filter (beca...

    1998 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB

    -

    Maintenance & Repair

  • Abs light on after gear set change 1 Answer

    After changing to 410 gear ratio from 343 ads and brake lights come on and no abs

    2005 GMC Sierra 1500 SLE 4WD Extended Cab SB

    -

    Maintenance & Repair

  • transmission in gmc sierra won't shift after a minute 1 Answer

    I have a 19990 gmc sierra that will stop working after mabe a mile. Have to stop and wait about 5 minutes and go again and keep repeating this.

    1990 GMC Sierra 1500 C1500 SLE Extended Cab SB

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 8,251 nationwide Sierra 1500 listings starting at $3,000.

Postal Code:

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,340
  • #2
    dragonflyoffshore
    Reputation
    11,500
  • #3
    John Saffrahn
    Reputation
    11,440
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
314 Great Deals out of 13,742 listings starting at $3,800
Used GMC Yukon
14 Great Deals out of 981 listings starting at $3,000
Used Dodge RAM 1500
3 Great Deals out of 90 listings starting at $2,500
Used Chevrolet Camaro
13 Great Deals out of 468 listings starting at $11,749

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.