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cdmn
12-09-2004 19:35:05
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Re: 1938 Fordson Tractor in reply to Bob Gayer, 12-07-2004 18:01:05
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I've got a 37 Fordson N and a 50 Fordson E27N.
First of all, Safety First. Check your antifreeze and oil levels. Should not be a cold day with stiff oil. Also, your air filter should not be plugged up. And check that the exhaust pipe isn't full of mouse or squirrel material. This could start a fire. Make sure the tractor is in neutral. Then, you should check to see if you've got a spark. Hold one of the leads about 1/4 inch from the engine block and watch it while someone turns the crank. Listen for impulse snaps, you have to have some. If not, the mechanism might be full of congealed grease or oil, or have broken springs or snap sprags. You'll need to turn it twice to get one spark at each plug. If you're afraid of it use something insulated to hold the wire. If you don't have spark, borrow a magneto from someone that is known to be good, or if you're lucky, use a point file to clean the points. (Don't use emery, etc. It might get into the magneto bearings.) If you have spark, double check to see if you have the wires going to the right plugs. [I assume the magneto hasn't been taken off and put back on out of time since it last ran. And you must have metal core sparkplug wires.] Also check to see if you have the right spark plug gap. Should be fairly small gap. Then, while spark plugs are out, poor an ounce of gas or oil or a mix in each cylinder. Turn the crank and see if each cylinder builds up any pressure. Takes two turns. If there is no air pushed out through the spark plug holes, there are stuck valves. These might be loosened by working them up and down behind the access cover. If you've got compression, put the plugs back in, set the spark advance to a retarded position. (Not too far, that shuts it off., pull the choke out, and crank it. Be careful not to break your arm. It's hard work. If you've got fuel and compression and spark at the right moment, it should pop. Be ready to move choke in to about the 80% position. Gradually open choke as it warms up. If it doesn't keep running, you might need to see whether the fuel supply is plugged somewhere along the way to the carburetor or inside it. Sometimes you could get a stuck float valve. Gas turns bad after a few months. By the way, it's not a good idea to try tow start a tractor with a worm drive, like the 38. You may be able to use a flat belt on the pulley.
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