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Ford 3000 (gas 3 cyl, 1966) not humming


 
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taylor74
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PostPosted: Mon Oct 14, 2019 9:24 am    Post subject: Ford 3000 (gas 3 cyl, 1966) not humming Reply to specific post Reply with quote

This good tractor started missing out. Instead of the consistent, steady hum from the engine it Hums for a split second, falters, immediately recovers, Hums, falters, etc. (HUM, cough-cough, HUM). It does this under a load and while idling. It does not seem to lose any power. It just HUMS, coughs and HUMS.

I checked the plugs with an inline spark tester. All 3 cylinders are sparking. Installed a new fuel pump a couple of months ago and it was running very well. Fuel flow seems to be ok.

Carb should be free of carbon as I always use a fuel additive.

Any thoughts on the most logical problem area (carb, distributor, etc)?? Thanks for any advice!!
 
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gears
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PostPosted: Mon Oct 14, 2019 3:21 pm    Post subject: Re: Ford 3000 (gas 3 cyl, 1966) not humming Reply to specific post Reply with quote

Does choking it change anything?
 
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Lynn Patrick
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PostPosted: Mon Oct 14, 2019 5:00 pm    Post subject: Re: Ford 3000 (gas 3 cyl, 1966) not humming Reply to specific post Reply with quote

What points and spark plugs are you using & how old are they?
 
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taylor74
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PostPosted: Mon Oct 14, 2019 11:17 pm    Post subject: Re: Ford 3000 (gas 3 cyl, 1966) not humming Reply to specific post Reply with quote

The plugs, points and condenser were installed about 4 years ago by a mechanic. The tractor has run well up until now.
 
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taylor74
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PostPosted: Mon Oct 14, 2019 11:19 pm    Post subject: Re: Ford 3000 (gas 3 cyl, 1966) not humming Reply to specific post Reply with quote

Choking is needed to start the tractor but once it warms up no choke is needed. When it misses out choking briefly helps.
 
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Lynn Patrick
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PostPosted: Tue Oct 15, 2019 5:04 am    Post subject: Re: Ford 3000 (gas 3 cyl, 1966) not humming Reply to specific post Reply with quote

Again I ask, what points & plugs are you using? Some brands today don't last as long as we would think.
 
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taylor74
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PostPosted: Wed Oct 16, 2019 6:56 pm    Post subject: Re: Ford 3000 (gas 3 cyl, 1966) not humming Reply to specific post Reply with quote

Hi,
I checked the plugs: Autolite 405. I can't tell about brand the points or condenser.
 
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