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1948 runs only with choke out


 
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Brian Glynn
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Joined: 23 Jan 2008
Posts: 15


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PostPosted: Sat Oct 19, 2013 9:29 am    Post subject: 1948 runs only with choke out Reply to specific post Reply with quote

1948 Front distributor

I searched the forums for this subject and think I have a good handle on what I need to do, but my 48 only runs with choke out, but when I rapped on the carb with my hammer, it ran good for a spell without choke out. I assume this meant the float was stuck right? So I cleaned the carb and will test it the next time I get to the deer shack. Also, number 1 had a weaker and yellower spark than the rest so I"ll change that with a new H12.

I have good gas flow to carb, good spark on all but one cylinder, a new battery, and a recently installed re-built generator. If it still runs on choke only, what should my next step be? I have no internet access where the tractor is out so I'd like to have a plan before I get there.
 
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souNdguy
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Joined: 20 Aug 2002
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PostPosted: Sat Oct 19, 2013 1:03 pm    Post subject: Re: 1948 runs only with choke out Reply to specific post Reply with quote

bad spark on 1 only.

change out plug and or wire.. 1 at a time and see if it changes.

as fo rhte carb.

clean it and adjsut float and see what ya get. also make sure she is not too lean.
 
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Colin King
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Joined: 16 Oct 2001
Posts: 4224
Location: Clotho, MN

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PostPosted: Sat Oct 19, 2013 4:31 pm    Post subject: Re: 1948 runs only with choke out Reply to specific post Reply with quote

Swap a good plug from one of the other three cylinders and see if that helps. If the problem clears up, you need a new plug. If not, you have either a bad plugwire connection or a bad plugwire.

I usually keep a spare set of plug wires in the parts drawer, along with points, rotor, dist. cap and plugs.

H12 plugs work, but the recommended plug for the job is Autolite 437.

Colin, MN
 
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