T b i

Asked by Jan 18, 2016 at 05:15 AM about the 1994 GMC Sierra 1500 C1500 SLE Extended Cab LB

Question type: Maintenance & Repair

What makes my tbi spray steady and constant
Pours gas into intake! Fouling plugs in short order.

2 Answers

85,325

That would be the 2 injectors that should be spraying a nice cone shape spray, with no droplets of gas dripping from the injectors. Let me know what it looks like.

118,195

So it is either a short to ground in the injector wiring or a bad injector driver in the ECM, unplug the ECM, then see if the injectors still spray fuel when you turn the key on, if they don't then it's the ECM if they do then it's the wiring.

Your Answer:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,600
  • #2
    John Saffrahn
    Reputation
    3,920
  • #3
    Glenn Clingenpeel
    Reputation
    3,730
View All

Related Models For Sale

Used Ford F-150
2,281 Great Deals out of 188,281 listings starting at $1,300
Used Dodge Ram 1500
335 Great Deals out of 9,325 listings starting at $1,500
Used Toyota Tacoma
421 Great Deals out of 49,181 listings starting at $2,400
Used GMC Yukon
326 Great Deals out of 21,887 listings starting at $2,950
Used Chevrolet Tahoe
629 Great Deals out of 38,014 listings starting at $1,199
Used Chevrolet Camaro
233 Great Deals out of 26,932 listings starting at $4,000
Used Ford Mustang
317 Great Deals out of 38,105 listings starting at $1,312

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
63 Great Deals out of 34,492 listings starting at $20,490
2017 GMC Sierra 1500 For Sale
123 Great Deals out of 5,482 listings starting at $18,488
2016 GMC Sierra 1500 For Sale
51 Great Deals out of 2,759 listings starting at $17,749
2015 GMC Sierra 1500 For Sale
70 Great Deals out of 4,618 listings starting at $11,995
2014 GMC Sierra 1500 For Sale
56 Great Deals out of 2,773 listings starting at $10,900

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.