340 rough running

Posted by Farmall 340 on July 16, 2002 at 07:34:50 from (64.109.214.14):

I have a 340 that I have been working on the problem is after about 5 min of working under load it starts missing and if I pull the choke it will smooth enough to run back to the house but will not run very well.#1 I put on a resistor before the coil because it n
has been converted to 12v#2 i installed new carb after cleaning fuel tank and adding fresh fuel.#3I installed new plugs ,rotor, cap ,wires.Any suggestions would be very helpful.The rough running only happens under load i have run it down the road in 5th gear 5 miles and still runs smooth and sounds as powerful as a 340 can sound .Thanks

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