John Deere 212 Lawn Tractor w/ 12 hp Kohler motor.
It was hardly running at all a couple of weeks ago. I changed the oil, and replaced the spark plug and tried it again. It idled smoothly after that, but still couldn't take more throttle. I rebuilt the carb, thinking that maybe it was gummed up. Put the carb back on and fired up right away, but still can't get beyond an idle. Whenever I apply more throttle it just starts running rough, blows black smoke and eventually dies. I have no idea what to try next, do you?|||When you pull the plus after it dies is it wet with gas or oil? If gas it is running too rich. Is the air filter plugged or the choke on? Is there a fuel filter? If so when was this last changed? So if starts and idles OK, it is not electrical so must be too much fuel or not enough air to get the correct air/fuel ratio.|||check for water in fuel....how old is the fuel, if old, drain tank and carb, and replace with fresh, gas has a limited life in these days with additives
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okay I tried to post three times .this site stinks for posting answers/comments: ) hahahaha..........take your gas cap off and cleeeean it .take apart the gas cap and clean the vent holes and the rubber gasket using a rag and a small paper clip. put it back together and put it back on your tank . this should solve your puking/barfing/sputtering dying engine under load if this is the culprit---a vacuum build up in the tank from your gas cap not breathing allowing air into the tank so the pump can suck fuel into the engine. blahblahblah try it and see if it worked ,it will only take about 15 minutes and save you a 100dollars for a dealers mechanic to give it the once over. if you were paying really close attention to your mower when you filled the tank you would have heard a sucking noise as the tank tried to fill with air as you unscrewed the cap to fill it. : ).... that is if this is the problem in the first place. worst case you will have to buy a new gas cap for 6-7 dollars from lowes/john deere/ebay. later and yes I know this was a old question ,but others may have the same problem.
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