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Case Tractors Discussion Forum

model D engine trouble

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D-pressed

08-20-2007 20:46:42

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My motor won't turn over. 6 volt battery 3 yrs old and won't take a charge. New battery today. Charged new battery before hooking up just to be sure I have full charge. Motor still barely turns over fast enough. It used to spin easily. All connections were cleaned and like new when fastened to battery. Hooked up booster and tried to start. Turns fast enough for a very short time. Now I've got gas leaking all over the place from trying to start. No doubt its flooded but shouldn't I have spark off a spark plug wire? It ran perfect when I put it in the shed. Why wouldn't I have spark now? Yes the switch is on. What do I do when it's flooded? Crank it with the choke full on or full off. Crank it with the throttle full on or full off. Never really figured that one out either. Please help!

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D-pressed

08-22-2007 20:09:44

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Re: model D engine trouble in reply to D-pressed, 08-20-2007 20:46:42

I got it to run but only if the choke is pulled half way out. When warmed up it runs better but will kill if I push the choke cable back in. Do I pull the carb and have it cleaned or is there something else going on to make it run so rough?

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Jheitkemper

08-22-2007 19:26:51

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Re: model D engine trouble in reply to D-pressed, 08-20-2007 20:46:42

All those tips are very GOOD and Welcome advice ,, But ,Sounds Like Your starter motor is getting tired and needs rebuilt ,,
If the wiring and or stater motor get hot while cranking ,, Or starter button ,,Good Luck , Jim

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caseman-d

08-21-2007 20:14:35

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Re: model D engine trouble in reply to D-pressed, 08-20-2007 20:46:42

Check battery cables, make sure your using 2/0 cables. You would be surprised what good cables will do for you.
caseman-d

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Mathias NY

08-21-2007 12:25:55

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Re: model D engine trouble in reply to D-pressed, 08-20-2007 20:46:42

When everything is working well it doesn't have to spin quickly to start when everything is working. If the PTO is engaged it will add more drag to the starter. Check to make sure the waterpump and generator are not seized. Check to make sure the oil level is not over full.

Yes you should have spark, but not if the plugs are fouled. Remove all the plugs, dry them, then with the gas off, crank the engine over to see if you have spark at each of the plugs. Is the tractor magneto or distributor ignition? The 'on' position for the ignition switch is different for each of them.

Bad gas will prevent an engine from starting even if everything else is working. Bad can mean both age and moisture.

When my tractor floods, I open the choke, put the throttle at 50%, and then crank it over a bunch. So far it has always worked...(knock on wood)

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Camboted

08-21-2007 02:56:21

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Re: model D engine trouble in reply to D-pressed, 08-20-2007 20:46:42

A lot of things can happen while a tractor sits. First pull the plugs, check them and put about 1/4 cup of light oil in each cylinder. With the plugs out slowly turn the engine over several times. Check for stuck valves bu holding your thumb over the spark plug hole.

Then, is your tractor a mag or didtributor? If mag, then you need to pull off the cap and clean it up, especially the points. If you can swap out the condensor that is a good idea. You can use a one wire condensor just make sure the ground screw is secure. Be sure you get it timed right and remember the fireing order on the wires are counter cyclical to rotation of the mag driver. Then pull off the carbureator and soak it in some cleaner, blow it out and finally if there is any old gummy fuel in the tank drain it and put in some fresh gas. Should go. LOL!

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