Question about Craftsman 17.5 hp 42 in. Deck Lawn Tractor - CA Model

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Engine Sputters and pops

Craftsman 21.5 HP 42" deck Model No. 917.272463. Upon startup it now pops every second or so. After running for 1 minute sputtering or popping disappears until I begin moving forwards or backwards. Popping is slightly less frequent when moving. I've replaced the spark plugs, air filter and gas is fresh. Fuel filter was replaced Spring of last year. Found fuel line that was cracked and replaced it. Found hole in vacuum hose and taped it till I get a replacement. Any ideas or suggestions is greatly appreciated.

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  • kam0993 May 09, 2009

    I placed duct tape (which fixes everything, lol) around the hole and sealed it tightly. However, it still pops. Does this mean air is getting through the tape or could it be something else?

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Its the problem of vaccum hose in the unit.clear problem of vaccum hose.as the required pressure to start up is not getting created due to vaccum leaking from the hose the air is leaking from it somewhere.pack it tightly .but till you get new part.you will have to pack it tightly for temprory use if required. its the vaccum hose problem.
please do rate the solution.thank you for using fixya.keep updated.thanks.

Posted on May 09, 2009

  • bepositive May 09, 2009

    the air is getting through the tape .you will need the part as the pressure of air ios too high while start up.
    the problem is vaccum hose.


    keep updated.
    please do rate the solution.

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