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JOHN DEERE 2510 GAS; PROBLEMS

Dave MY JD 2510 4-CYL. GAS TRACTOR, STARTS HARD, THEN ONCE STARTED, WHEN YOU TRY TO ADVANCE THE ENGINE RPM'S IT USUALLY STALLS OR STRUGGLES TO KEEP RUNNING.CARBURETOR, GAS FILTER, PLUGS, POINTS, CONDENSOR, AND FUEL PUMP ALL CHECK OKAY. CAN ANYONE PLEASE OFFER SOME ADVICE ON WHAT PROBLEM IS?? THANKS IN ADVANCE.
Dale G. Basgall Dave, taken literally that all your items checked out ok that you listed, for sure you have a fire going out in the cylinders when the throttle plate allows more air to enter into the carburetor and therefore more air fuel mixture into the engine.

If the muffler is rusted on the inside it could be causing a restriction of exhaust gas which would also effect the fuel air into the engine and you would experience the lean effect.

On the other hand your ignition coil may be weak or for some reason the spark is not sufficient to fire the mixture as compression pressure increases within the cylinder upon acceleration.

Take a plug out and open the gap to about 50 to 80 thousanths, three times the normal gap. Turn over the engine and look if the spark is blue and snappy or orange and fat, or not even there. Make sure to ground it good. Then check for the voltage input to the plus side of the ignition coil with the switch in the on position. The coil should have at least 10 volts dc to the plus side of the coil. Put one end of a digital volt ohm meter on the tractor ground and the other on the plus terminal on the ignition coil.

If that doesn't get it then write back on the forum, I will be happy to assist.

Dale G. Basgall

John Heine Will it run with choke part way on?Does carb have electric solnoid on it? Does engine cough and sputter if so check compression may have a valve leaking.Has someone had carb apart if so is venturi back in right.First thing I would do is check compression then go from there


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