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

300

You should change your plug wires.

24,225

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

Add photo

Related Questions

  • is a 4.9L straight 6 a strong motor in the f150? 51 answers

    1991 Ford F-150

    -

    General

  • why isn't my Ford f150 getting spark 7 answers

    I've changed coils spark plugs spark wires distributor cap distributed pickup ignition modulePCM or ECM whatever anybody wants to use I've checked all fuses and relays there all goodI don't know wh...

    1994 Ford F-150

    -

    General

  • 1988 Ford F150 8 Cylinder 4.9L engine 4 answers

    I am about to buy a 1988 Ford F150 4.9L 8 Cylinder PU. Is this a good engine and pick up? Any ideas as to the MPG and the reliability of this engine?

    1988 Ford F-150 S Standard Cab 4WD LB

    -

    General

  • 95 f150 won't start after changing ignition coil 1 answer

    1995 Ford F-150

    -

    General

  • ruff running f150 2 answers

    1992 f150,5.0 runnin g very rich,front cylinder on drivers side is not getting fuel,engine missing pulled codes 23,31,85,32 new fpr,wires,plugs, egr valve heeeeeeeeelp

    1992 Ford F-150 XL LB

    -

    Maintenance & Repair

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,930
#2 dandyoun
dandyoun
Reputation 4,360
#3 tennisshoes
tennisshoes
Reputation 2,770
View All

Related Models For Sale

Used GMC Sierra 1500
825 Great Deals out of 68,199 listings starting at $2,484
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Ford F-250
481 listings starting at $3,475
Used Ford Explorer
946 Great Deals out of 72,518 listings starting at $1,000
Used Ford Ranger
197 Great Deals out of 5,805 listings starting at $1,650
Used Jeep Wrangler
277 Great Deals out of 18,163 listings starting at $2,950

Used Cars For Sale

2017 Ford F-150 For Sale
32 Great Deals out of 128,121 listings starting at $18,445
2016 Ford F-150 For Sale
123 Great Deals out of 17,380 listings starting at $18,848
2015 Ford F-150 For Sale
186 Great Deals out of 7,904 listings starting at $17,900
2014 Ford F-150 For Sale
381 Great Deals out of 12,590 listings starting at $7,995

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.