7 horse briggs backfires and pops at an idle

Discussion in 'Mechanic and Repair' started by Robert Doubrava, Aug 31, 2001.

  1. Robert Doubrava

    Robert Doubrava LawnSite Senior Member
    Posts: 342

    ok, thanks
     
  2. Fish

    Fish LawnSite Member
    Posts: 139

    Valves are a possibility, but a good bet is that the points need
    replaced. It is easier to retrofit an electronic module, Briggs makes one, and you just need to cut the wire to the points,
    and not have to bother removing the flywheel.
    Fish
     
  3. Robert Doubrava

    Robert Doubrava LawnSite Senior Member
    Posts: 342

    i forgot to mention the engine has an electronic ignition already.
     
  4. Fish

    Fish LawnSite Member
    Posts: 139

    Well. What does it do when you adjust your idle mixture screw
    on the top of the carb, does it change? How much up and down
    play do you have in your carb throttle shaft?
    Fish
     
  5. Robert Doubrava

    Robert Doubrava LawnSite Senior Member
    Posts: 342

    i'm not sure. i haven't tried that yet.
     
  6. Robert Doubrava

    Robert Doubrava LawnSite Senior Member
    Posts: 342

    what is the screw on the bottom of the fuel bowl for?
    any answer is appreciated.
     
  7. Robert Doubrava

    Robert Doubrava LawnSite Senior Member
    Posts: 342

    once, the engine even popped out a small flame!:blob2:
     
  8. vipermanz

    vipermanz LawnSite Bronze Member
    Posts: 1,773

    most likely or not it is a drain screw rather then a needle since it's on the bottom,needles are usually on the top othe carb,

    yea they will shoot out a flame every so often but i would think that would mean some sort of bad exhaust valve timing
     
  9. Robert Doubrava

    Robert Doubrava LawnSite Senior Member
    Posts: 342

    ok. thanks vipermanz.:blob3: :blob4: :blob1: ::)
     
  10. Robert Doubrava

    Robert Doubrava LawnSite Senior Member
    Posts: 342

    we used the mower recently, and for some reason it started screwing up again! i was mowing a yard and the dang thing started backfiring and shortly after that, it died. before we cranked it up we cleaned out the fuel filter, and it ran fine when we cranked it up.it runs very loudly. it gave us trouble four times in a row! can anyone tell me how to prevent this before it does it again? Thanks,

    Robert
     

Share This Page