lawnmower problems

Discussion in 'Bad Dog Cafe' started by guitarmoron, May 18, 2019.

  1. guitarmoron

    guitarmoron Tele-Meister

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    I have a JD circle track mower, just got back from being serviced. I have some gas in it with a lot of SEA**AM. I added some new 100% gas on top, about 2/3 of the tank. it now backfires, stalls and dies, it will run normal for about 15 minutes. I pulled a plug and it looks fine, fuel filter has gas flowing, checked air filter. is this just the SEA burning off?

    thanks

    GUITARMORON/ENGINEMORON
     
  2. don71

    don71 Tele-Afflicted

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    Its possible the seafoam™ has dissolved contaminates and the engine is having hard time passing it..er...burning the deposits. It shouldn't have a problem burning the product. Its just petroleum.

    Is the engine smoking?
     
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  3. guitarmoron

    guitarmoron Tele-Meister

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    No, It stopped backfiring, but still stalls
     
  4. Intubator

    Intubator TDPRI Member

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    Probably. Although backfiring is usually 1) a leak in the exhaust, 2) or a lean mixture (poorly adjusted, or dirty carburetor) or 3) way early or late ignition. Is your choke on? or off?. Id say dump all the fuel from the tank and fill it with good FRESH gasoline. Fire it up and let it run for a good 5-10 minutes even if backfiring and observe if it smooths out. Try with the choke on for a bit and very slowly close it until it runs smoothly. My guess is the "mechanic" poured a bunch of seafoam in to clean the fuel system without having to actually take the carb apart.... If there was alot of dirt/debris in the tank then you may be actually worse off now as the solvent has broken that stuff up and may have clogged some of the very small fuel conduits in the carb, likely causing the lean condition and the backfiring. Good luck!
     
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  5. duzie

    duzie Tele-Meister

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    Drain the tank and carburetor and try again with fresh gas .
     
    Last edited: May 18, 2019
  6. don71

    don71 Tele-Afflicted

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    I will assume the engine doesn't have too much seafoam™ in ii then. It quite possibly is something else.
     
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  7. 1293

    1293 Poster Extraordinaire

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    What did the "service" involve?
     
  8. rangercaster

    rangercaster Friend of Leo's

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    Should run good if just serviced I think ???
    Ask your tech ...
     
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  9. guitarmoron

    guitarmoron Tele-Meister

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    oil change/filter,/air filter grease,plugs fuel filter/plug
     
  10. Bones

    Bones Telefied Ad Free Member

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    Did you check the Johnson rod?
     
  11. geoff_in_nc

    geoff_in_nc Friend of Leo's

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    I've been told by a small engine mechanic to not use gas that contains ethanol... That's all the help I've got to give today.
     
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  12. Boubou

    Boubou Doctor of Teleocity Gold Supporter

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    I just switched to battery operated mower, so I have nothing for you
     
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  13. stxrus

    stxrus Friend of Leo's

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    Possible gummed up carb, improper air/gas mix, or too much seafoam
    That’s the best I have. Good luck
     
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  14. Milspec

    Milspec Friend of Leo's

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    If it stalls....it is due to lack of fuel reaching the chamber. Sure, there can be other problems to mimic that, but it is the right answer 90% of the time. The solution on small engines is always to drain the tank, fuel lines, and fuel bowl if it has one. Refill with non-ethanol blended fuel and you will be good to go. On small engines, ethonal blends are a bad idea as they collect moisture. Blended fuels of today also start to turn to varnish in 3 weeks so you should never leave fuel in there for a long period.

    Just drain and go....it will be fine
     
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  15. boris bubbanov

    boris bubbanov Telefied Ad Free Member

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    Some small engine mechanics consider it very bad form to return a machine that won't run well. While others just do all the tasks on the punch list, get paid and never actually give any attention to getting the motor where it will start well, run well and do its job well. That's why I'm inclined to just do the job myself so nobody overlooks the big picture.

    Dear Mr. Mechanic: I doubt you'll be in business long if you lose track of why you were hired in the first place.

    +

    Example: I replaced all the tie rod ends, arm bushings, ball joints, springs, struts, bellows, bump stops, sway bar links and what have you on the front suspension on the '01 Saab 9-5. Next I'll do the same sort of thing for the back suspension. THEN it will go to the alignment shop where the real expertise is to be found. This is the real core, crux aspect of a tire shop and it is worth every dime. The rest of this stuff I did is easy-peasys stuff we could teach 12 year olds to do. Sounds like this "mechanic" did all the drudge stuff but forgot about why any of those things matter.
     
    Last edited: May 18, 2019
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  16. stxrus

    stxrus Friend of Leo's

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    Every gallon of gas in my cans (gensets, weedeater, chainsaws, etc) gets an application of Stabil. I also drain the carb every time I can. Weedeater & saws aren’t always drained every time but so far I’ve never had a problem
     
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  17. Milspec

    Milspec Friend of Leo's

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    Yup, that is the way to go. Seafoam actually works as well as Stabil in my experience, but either way.
     
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  18. jackinjax

    jackinjax Friend of Leo's

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    10-15% ethanol destroys small engine carburetors. I switched to non-ethanol gasoline a few years back and haven't had any engine problems with my lawn equipment since.
     
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  19. blowtorch

    blowtorch Telefied Ad Free Member

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  20. trev333

    trev333 Telefied Ad Free Member

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    yeah look what ethanol did to mine.....:rolleyes::lol:

    small bits of metal sucked into an engine can destroy it as well.... fortunately the screw embedded itself in the head.. and the brass half of the shaft was never seen again?... I gave it a good cleaning and check for any more bits floating around, found none.. so I put it back together with new gaskets.. and a new carby for 25 bucks off ebay...

    set the valves, fueled it up.. and it started and ran straight away.... sweet.... left it for a week.. no oil leaks... then started it again and mowed the yard... no smoke or oil spewing out anywhere.. job done..

    I'd hate to think what a mechanic would have charged.... think I spent 18 on gaskets and 25 for the carby probably only took an hour or so to fix it all up....

    DSCN2105.JPG

    screw in head.jpg
     
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