carb issue with 1982 ford f-150


Asked by Apr 18, 2015 at 06:18 PM about the 1982 Ford F-150

Question type: Maintenance & Repair

After 15 minutes driving, engine backfires during deceleration and dies.  Engine restarts
fine.  Next decel backfires and dies...repeat.

5 Answers

First make sure not to use ethanol.Next use high 91 octane fuel.Hopefully can fuel up near your home.Once back home place truck in Park.Rev your engine to 2000 rpm and hold this position for 45 seconds to one minute.Sounds like you have carbon deposits on your cylinder walls.Let me know your results


As Felton stated your problem could be in the octane level of the gasoline you are using. Eighty seven octane will not cut it 1980's era vehicles required low to mid 90 octane level fuel. The pre-ignition backfire you are experiencing is due to ethanol having a detonation level lower than gasoline. Check and make sure the vehicle is not backfiring through the carb either. You can seriously damage the internals of the engine if either condition is true.


Thanks, gents.....tank is full right now....can I get away with adding a stabilizer of octane booster to try things out?


Bye passed EGR valve....doing same thing....putting in the fuel stabilizer now....going for another test drive.


Seems like an input to the carb, that comes after the truck runs 20 minutes...and decel still causes slight backfires and engine to stall, however; if I put the truck in neutral at the same time I let off the throttle, idles fine and no backfires...

Your Answer

Add photo

Related Questions

  • carb issue with 1982 ford f-150 5 answers

    After 15 minutes driving, engine backfires during deceleration and dies. Engine restarts fine. Next decel backfires and dies...repeat.

    1982 Ford F-150


    Maintenance & Repair

  • Breaks on my Ford F-150 1982 1 answer

    I have a 1982 Ford F-150 and the brakes have gotten so bad they hardly stop when you push them all the way in. The red break light is also on. What's wrong how do I fix this?

    1982 Ford F-150


    Maintenance & Repair

  • 1982 Ford F-150. No spark out of top of coil 1 answer

    1982 Ford F-150 4 wheel drive. Won't get spark out of top of coil.

    1982 Ford F-150 XLT Standard Cab 4WD LB


    Maintenance & Repair

  • Ford F-150 1 answer

    I just bought a new computer for a 1997 Ford F-150 thinking thats was causing my truck not to crank. Today I find out I am getting fire to my coil but no fire coming from the coil. Whats the probl...

    1997 Ford F-150


    Maintenance & Repair

  • 1992 Ford F'150 4 answers

    When I start it the entire truck shakes. We've changed all the spark plugs, wires, roader and cap but still can't find the issue. Any help would be appreciated.

    1992 Ford F-150


    Maintenance & Repair


Looking for a Used F-150 in your area?

CarGurus has 207,301 nationwide F-150 listings starting at $1,499.


Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
Reputation 8,210
#2 dandyoun
Reputation 4,390
#3 tennisshoes
Reputation 2,880
View All

Related Models For Sale

Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999
Used Ford F-250
469 listings starting at $2,000
Used Ford Ranger
176 Great Deals out of 5,676 listings starting at $950

Used Cars For Sale

2018 Ford F-150 For Sale
51 listings starting at $35,135
2017 Ford F-150 For Sale
26 Great Deals out of 133,541 listings starting at $18,022
2016 Ford F-150 For Sale
89 Great Deals out of 13,558 listings starting at $18,300
2015 Ford F-150 For Sale
201 Great Deals out of 8,347 listings starting at $16,999
2014 Ford F-150 For Sale
385 Great Deals out of 12,687 listings starting at $6,600

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.