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

370

You should change your plug wires.

26,915

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
    9,960
  • #2
    dandyoun
    Reputation
    4,690
  • #3
    tennisshoes
    Reputation
    3,420
View All

Related Models For Sale

Used GMC Sierra 1500
1,120 Great Deals out of 61,765 listings starting at $1,295
Used Ford Mustang
341 Great Deals out of 42,380 listings starting at $1,488
Used Ford F-250
427 listings starting at $2,500
Used Ford Explorer
1,112 Great Deals out of 68,286 listings starting at $1,200

Used Cars For Sale

2018 Ford F-150 For Sale
16 Great Deals out of 142,989 listings starting at $19,455
2017 Ford F-150 For Sale
230 Great Deals out of 14,275 listings starting at $17,990
2016 Ford F-150 For Sale
224 Great Deals out of 7,818 listings starting at $16,987
2015 Ford F-150 For Sale
435 Great Deals out of 10,805 listings starting at $11,990
2014 Ford F-150 For Sale
655 Great Deals out of 14,316 listings starting at $7,000

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.