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Discussion Starter · #1 ·
We have a Ford 2N that would only run when the choke was kept fully out. We identified a leak at the exhaust manifold and just replaced the gaskets. However, nothing has changed. There's still a leak in the same place and the tractor only runs with the choke out. Any ideas? Appreciate any ideas. Thanks.
 

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With the choke out I'd say you have a tractor starving for fuel. You are not getting enough fuel to or through the carb. Remove the plug under the carb bowl and see if you have a good steady stream of gas for a half minute or so. Catch the gas in a container of some kind. If fuel slows to a trickle you have a blockage most likely from trash in the tank, sediment filter, or carb. If you have a good fuel flow most likely the carb has trash somewhere in its "innards". What I have most often found is that a jet or needle valve is plugged. Sometimes a small piece of wire and an air compressor will fix it and sometimes the carb needs a good bath in carb cleaner and an overhaul kit installed.
 

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Discussion Starter · #3 ·
Thank you Jim. We know it's a fuel issue and not spark. We are going to replace the carburetor next and see if that's the problem. Thanks for your advice. Wayne.
 

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Also check the gasket where the carb mounts to the manifold. It should have a gasket about the thickness of a cereal box cardboard. A bad gasket because some one removed the carb for what ever reason and reinstalled the carb with the bad gasket will give you the same headache. The easiest way to see if it is a gasket with out tearing it apart? Take a bottle of some spray lubricant. With the engine runnning, spray the lubricant around where the carb mounts to the manifold. If the hood is off, also spray around the manifold where it attaches around the block. If the engine RPM changed during the time you were spraying, this would mean you found the area it is leaking.

One other thing to check. Some of the Fords had a petcock on the manifold to steal a finite amount of vacuum for an accessory (ie a milking machine). If this valve is loose, remove the valve and install a pipe plug.

Let us know what you find out.
 

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Didn't just replace the manifold by chance? Land of almost right got me there, had to grind a good bevel on the bottom side as it was hitting the lifter covers.
 
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