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M5 carb


 
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Steve Fawks
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Joined: 24 Sep 2012
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PostPosted: Mon Sep 24, 2012 5:11 am    Post subject: M5 carb Reply to specific post Reply with quote

Just got my M5 back from overhaul and paint. It starts easy, idles fine, and runs with a load great....for a few minutes. Then it coughs and sputters like it's running out of gas until I let off the throttle.

New fuel line was run during restoration. I tried different adjustments on the carb. Any ideas?
 
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pullingforfun
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PostPosted: Mon Sep 24, 2012 6:51 am    Post subject: Re: M5 carb Reply to specific post Reply with quote

Could be some blockage in the tank it's self. Had that problem on our U
 
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Craig Thompson
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PostPosted: Mon Sep 24, 2012 9:18 am    Post subject: Re: M5 carb Reply to specific post Reply with quote

I have also had a problem where I bought a new fuel bowl and the company that installed the outlet on the bowl installed teflon tape and was partially blocking fuel leaving the outlet.

This was a nightmare to find... but I would suspect it could even be at the connection points at the new fuel line? well its worth a try.
 
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Steve Fawks
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PostPosted: Mon Sep 24, 2012 5:51 pm    Post subject: Re: M5 carb Reply to specific post Reply with quote

Guess I"ll start by disconnecting the fuel line at the carb and checking the flow. If that"s good, I"ll move to carb itself. Thanks.
 
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Alan K
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PostPosted: Mon Sep 24, 2012 6:10 pm    Post subject: Re: M5 carb Reply to specific post Reply with quote

Odd thought but take a look in the tank as well....there may be an obstruction that floats over the hole occasionally that slows or stops the flow.
 
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T.R.K.
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PostPosted: Tue Sep 25, 2012 8:15 am    Post subject: Re: M5 carb Reply to specific post Reply with quote

When I had that problem it was fuel varnish glaze over most of the filter screen. Couldn't tell it when the screen was wet, but was obvious when dry.
 
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Alan K
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PostPosted: Tue Sep 25, 2012 5:19 pm    Post subject: Re: M5 carb Reply to specific post Reply with quote

Guess you allready said that didnt you...lol
 
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Steve Fawks
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PostPosted: Tue Sep 25, 2012 7:42 pm    Post subject: Re: M5 carb Reply to specific post Reply with quote

Is there anything that would come about with the tractor warming up? The first few minutes seem perfect? I have the fuel shut off when not using the tractor, it starts fine and runs for several minutes at whatever speed. Then it starts pitching a fit until I cut the throttle.
 
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shinnery
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Joined: 18 Apr 2006
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Location: Hawley, Texas

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PostPosted: Tue Sep 25, 2012 11:02 pm    Post subject: Re: M5 carb Reply to specific post Reply with quote

All my M5s are propane or diesel, should it have a vented cap on the tank? My only gas moline is a Big Mo 400 M with the round tank.
Bryce
 


Last edited by shinnery on Tue Sep 25, 2012 11:05 pm; edited 2 times in total
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