Posted by 36 coupe on May 22, 2008 at 04:20:12 from (64.136.26.226):
In Reply to: no Spark to Plugs posted by Jim Bevins on May 21, 2008 at 04:14:56:
Carbon fouled spark plugs will not fire the fuel charge.Take a plug out and see if the spark is jumping across the gap and not running up the insulator nose.Running on the road may have carboned up the insulators.Prolonged idling can foul plugs.Spark plug heat ranges have been moved up a step with the gas we use now.I keep a pair of spark plugs in a covered jar of lacquer thinner for my John Deere.The 2 cylinder tractors will foul plugs fast under light loads.The ohv Ford engine can do it too.Make sure your tractor has a thermostat and is not running too rich.My 640 does not burn oil but if I let it idle while loading fire wood or hitching up an impliment it will skip a bit.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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