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Order Ford 640 Parts Online

Re: Ford 640 - How should the coil be wired

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Author  [Modern View]

03-28-2013 19:16:13

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Once again I appreciate the info.

I have the tractor running at idle but it seems to be missing. When I advance the throttle to high RPM it runs decent for a bit but when warm I can't bring the throttle back down or it will rev from high to low and eventually die.
On a possibly related note, quite a bit of fuel (a puddle) is leaking from the carb when the tractor is off from what appears to be the throttle linkage. I'm assuming it needs a carb rebuild but I didn't know if the missing and inability to go to low rpm is mostly spark related.


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03-28-2013 19:34:56

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 Re: Ford 640 - How should the coil be wired in reply to tgemignani, 03-28-2013 19:16:13  
As Royce said good to shut the gas off when not running or you can get gas in the oil and that can mean an engine rebuild. If in fact the leak is at the throttle shaft that is a vacuum leak and that will cause odd problems and needs fixed

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03-28-2013 19:24:11

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 Re: Ford 640 - How should the coil be wired in reply to tgemignani, 03-28-2013 19:16:13  
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Its always a good idea to shut the fuel off when the tractor is off.

The fact that its leaking is, as you said, is an indication of it needing carb work.

At the least the needle valve is not seating correctly.

That's a pretty common thing on tractors that have set for a while though.

A decent carb rebuild may solve the majority of the problems.

Still a good idea to service the air filter and any other items that have been neglected.

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