92 f150 4.9 running on 3 cylinders getting gas & spark I unplug 1st 3 plugs and nothing changes

10

Asked by Jun 21, 2014 at 09:17 PM about the 1992 Ford F-150 S LB

Question type: General

2 Answers

340

You should change your plug wires.

25,785

Basics - Basics - Basics. Compression test, Vacuum leaks (especially the 4.9L with 70 pounds of manifolds hanging on side of the motor), Plugs and wires (as mentioned). A knowledgable technician with proper diagnostic skills would help too. You've posted this one before haven't you?

Your Answer

Ford F-150 Experts

  • #1
    OJ
    Reputation
    9,070
  • #2
    dandyoun
    Reputation
    4,570
  • #3
    tennisshoes
    Reputation
    3,120
View All

Related Models For Sale

Used GMC Sierra 1500
1,003 Great Deals out of 66,526 listings starting at $2,495
Used Ford Mustang
592 Great Deals out of 36,129 listings starting at $1,800
Used Ford F-250
468 listings starting at $2,550
Used Ford Explorer
890 Great Deals out of 67,382 listings starting at $1,800

Used Cars For Sale

2018 Ford F-150 For Sale
60,518 listings starting at $21,850
2017 Ford F-150 For Sale
129 Great Deals out of 60,782 listings starting at $17,990
2016 Ford F-150 For Sale
137 Great Deals out of 7,903 listings starting at $16,995
2015 Ford F-150 For Sale
345 Great Deals out of 11,424 listings starting at $15,591
2014 Ford F-150 For Sale
501 Great Deals out of 14,347 listings starting at $9,999

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.