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Subject: hard start with new carb

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Ken Arms    Posted 08-11-2019 at 13:17:13 [URL] [DELETE]        [Reply] [Email]  
  • hard start with new carb
  • High folks, I need some help, I have a 53 NAA, it is rebuilt. I bought a zenith style carb for it when the rebuild was fresh and it started and ran great for the last 6 years or so, the zenith started giving trouble, leaking and engine rough running after the tractor was hot. I rebuilt it with a kit but same issues. I finally decided to replace it with a new carb. got the carb off amazon, its a copy of the Marvel Shibler (bad spelling) that was on it originally. Now the NAA runs great but starts very hard. With the zenith it would start by one or two cranks (12volt conversion). Now it cranks and cranks. choke seems to make it worse. I have tried adjusting gas and air but I cant seem to find a good setting. Help?? Ken

    Ken W Arms    Posted 08-14-2019 at 12:00:22 [URL] [DELETE]        [Reply] [Email]  
  • Re: hard start with new carb
  • All is well, plugs were carboned up bad and point gap too narrow. can anyone give me the starting setting for the idle air needle? I think the fuel needle is 2-1/4 out. Thanks Ken

    Tim Daley(MI)    Posted 08-11-2019 at 16:08:20 [URL] [DELETE]        [Reply] [No Email]  
  • Re: hard start with new carb
  • Chances you have carb issues with hard starting is probably due to mucked up wiring. Do a fuel test. If carb passes fuel test, you've just narrowed down the problem to electrical. Not saying the 12V conversion is part of the problem but it's a fact that 99.98% of all non-starting poorly running issues are related to 12V conversions. 6V systems can be an issue too if not wired right but BOITH need to be wired correctly. Look at JMOR's Wiring Pictograms.

    Tim Daley(MI)

    Farmer Dan    Posted 08-11-2019 at 14:25:30 [URL] [DELETE]        [Reply] [Email]  
  • Re: hard start with new carb
  • After 6 years you probably need to look at your points.

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