Weird idle with 19Hp kawi

Discussion in 'Mechanic and Repair' started by Lynden-Jeff, Apr 9, 2007.

  1. Lynden-Jeff

    Lynden-Jeff LawnSite Bronze Member
    Posts: 1,405

    Hey,

    Did a tuneup on my ZT-219 with 19 HP kawasaki. Replace the air filter, fuel filter and did an oil/filter change. Haven't done the plugs yet. When I fire it up and put it to low throttle it revs really low like its about to stall and then comes back up. Its not a quick Up down up down but more gradual. Could it be due to stale gas? Its fine all half/full throttle. The gas has been in there since before the winter so im pretty sure its gone stale.

    Thanks
    Jeff
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,022

    Drain the old fuel and install fresh, Then replace the plugs. Post if it still does this, Could need a carb. clean after sitting with fuel in it all winter.
     
  3. Lynden-Jeff

    Lynden-Jeff LawnSite Bronze Member
    Posts: 1,405

    Hey,

    Will try and run some seafoam through it. How difficult is cleaning out the carb? Im trying to learn how to do some of this stuff my self, im pretty mechanically inclined.

    Cheers
    Jeff
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,022


    [​IMG]

    This may be helpful....

    FH 601 641 680 721 Carb Breakdown.jpg
     
  5. Lynden-Jeff

    Lynden-Jeff LawnSite Bronze Member
    Posts: 1,405

    Would adding seafoam to the gas help clean things out? Says it cleans carbs, now I don't know how well but may it save a cleaning?

    Cheers
    Jeff
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,022

    I have bought 3 brands of upholstery cleaner to clean the seats in my Jeep, Did any of them work ? NO ! I couldn't see any difference and they are not that bad.

    I don't know if that stuff will work, Give it a try ! I just don't believe in stuff like that.

    Now, Taking the carb. apart and shooting carb & choke spray cleaner with the little straw through all the little ports and passages will work.
     
  7. Lynden-Jeff

    Lynden-Jeff LawnSite Bronze Member
    Posts: 1,405

    Hey,

    Thanks man, will let you know how it goes.

    Cheers
    Jeff
     
  8. robbo521

    robbo521 LawnSite Senior Member
    Posts: 601

    seafoam is great on boat motors,i do know that to be very true!
     

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