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John Deere Tractors Discussion Forum
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39A backfires

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AllanR

12-10-2006 17:29:12




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My 39A started to backfire during idle. I tried to change the engine speed but it makes no difference. It does not do this when being driven, just idle. What cause this.




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JD60WH

12-10-2006 19:25:58




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 Re: 39A backfires in reply to AllanR, 12-10-2006 17:29:12  
lack of fuel or a plugged idle passage. open the idle needle a 1/2 turn and see if thaty helps.



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AllanR

12-13-2006 14:19:03




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 Re: 39A backfires in reply to JD60WH, 12-10-2006 19:25:58  
That did it. JD60WH I opened the idle needle one full turn to get it to stop backfiring. Thanks for the info. Would taking the carb off and cleaning it a be recommended.



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