Misfire

Asked by Sep 18, 2017 at 12:36 AM about the 1999 Ford F-150

Question type: Maintenance & Repair

I have a check engine light on for a non cat
damaging misfire the shop said on 7 and 5. on an
5. Triton the. Replaced spark plugs and coils still
there shop said it's non cat damaging misfire the
truck runs great no smoking no hesitation no
nothing shop said it could be a valve of some kind
or injectors. Could there be anything else? Like I
said there's no smoking or hesitation of any kind
runs amazing. Any help would be greatly
appreciated

2 Answers

825

Once there is a misfire the cat will get damaged. There is no such thing as a none cat damaging misfire. If you already replaced that cool and plug make sure u have good compression and that the fuel injectors are working

54,585

I would go to a different shop. Miss-fires will put raw fuel into the exhaust, this fuel burns at the catalytic converter and it can overheat and melt the substrate ruining the catalyst. It all depends how frequent the miss-fire is and how much fuel in not burning. A flashing check engine light will signal this to you.

Your Answer

Ford F-150 Experts

  • #1
    OJ
    Reputation
    9,260
  • #2
    dandyoun
    Reputation
    4,630
  • #3
    tennisshoes
    Reputation
    3,250
View All

Related Models For Sale

Used Chevrolet Silverado 1500
179 Great Deals out of 9,745 listings starting at $1,700
Used GMC Sierra 1500
234 Great Deals out of 9,999 listings starting at $399
Used Ford F-250 Super Duty
31 Great Deals out of 789 listings starting at $2,475
Used Toyota Tundra
42 Great Deals out of 1,220 listings starting at $2,500
Used Dodge Ram 1500
45 Great Deals out of 500 listings starting at $3,488
Used Toyota Tacoma
37 Great Deals out of 1,024 listings starting at $7,950
Used Ford F-350 Super Duty
33 Great Deals out of 1,086 listings starting at $6,995
Used Ford Mustang
10 Great Deals out of 1,078 listings starting at $4,500
Used Ford F-250
4 listings
Used Chevrolet Tahoe
6 Great Deals out of 750 listings starting at $3,995
Used Ford Explorer
47 Great Deals out of 1,493 listings starting at $3,985

Used Cars For Sale

2018 Ford F-150 For Sale
4,260 listings starting at $30,465
2017 Ford F-150 For Sale
49 Great Deals out of 2,448 listings starting at $28,173
2016 Ford F-150 For Sale
97 Great Deals out of 847 listings starting at $25,985
2015 Ford F-150 For Sale
120 Great Deals out of 729 listings starting at $21,990
2014 Ford F-150 For Sale
110 Great Deals out of 527 listings starting at $13,800

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.