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Post by docster on Aug 9, 2012 20:05:01 GMT -5
new to me. 84 NH125, only 3k miles. Sat last 5 years. new fuel petcock, battery, and tires. Heres the problem. It will turn over, and fire for a few seconds, then die. Pull the plug, covered in copious amounts of oil. Assuming something wrong with pump, but what? I would love to keep the oil injection, but not if i can fix it (dont want to replace it). Any thoughts on what is causing this and how to fix it? Otherwise i am making a block-off plate and running premix....dont let me do that!
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Post by bear4570 on Aug 10, 2012 12:51:39 GMT -5
Usually the seal on the pump shaft is weak and oil has seeped into the crankcase over the last 5 years. Two ways to make the motor run right now. Pull the intake and reeds and lay the motor on it's side and pour the oil out or pull the plug, crank the engine with you finger covering most of the plug hole and blow the oil out, messy but it works. Or get a hotter heat range spark plug (it burns the oil off and fire it up. Once the excess oil is burnt off, a week sitting will not cause you a starting problem.
You can NOT make a block off plate. It will drop you case compression causing a loss of engine performance. You need to either grind the teeth off the pump gear or make a plug since there is no commercial plug available.
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