KX Riders
Maintenance & Technical => KX500 Original => Topic started by: fluffy on September 06, 2007, 01:25:15 PM
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all of a sudden the kx seemes to have picked up a bad habit, shes smokin . also the level in the sight glass seemes to go down after a couple hours hard racing. crank seals sound about right? or.
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what color of smoke and from where?
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To check your crank case seal on the clutch side of the motor pull the crank case breather tube out where you can put some spit on the end of the tube with your finger while the engine is running, If It blows a bubble the main seal Is likely bad. To check the main seal on the mag side pull the mag cover and mag and look at It If it is leaking It will be visually obvious. This is the poor boy method, before you actually take the engine apart you should perform a leak down test. It Is also possible to have a leak between the cases and suck oil from the tranny that way. kx500's are also known to develop leaks in the cast erea around the main bearings. while performing the leak down test you can spray soapy water on the erea oround the main bearing to look for bubbles.
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oil smoke comming from muffler,have been using maxxima 927 but just recently noticed more smoke than before. bought a bottle of golden spectro sx 2 and smoke was 80% gone.going to do some testing sunday.
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when It gets cold 927 separates from the gas and goes to the bottom if your pepcock is on when this happens then alot of the oil goes to the float bowl and yes It smokes like hell I lost a motor do to this. Has It been In the forties at night where you live?
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not sure if it got that cold but something ill look at. i do ride at a higher elevation then i live.