Ok guys this will be a long one cause I'm trying to explain the problem in detail: My mean machine '94 KDX250 is giving me strange problems lately... Recently the engine started bogging a lot losing performance throughout the powerband until I noticed that the small intake tube which connects the carb with the reeds was severely cracked. That possibly meant that there was loss of pressure because it was sucking air from the cracks. Right ? At least that's how I would explain it! Well anyway, I took out the carb, the tube and the reeds, and I noticed a drop of 2-stroke oil near the air screw (inside the carb's mouth). I thought that was strange and then I checked the large-mouthed sort of tube piece that connects the carb with the lower side of the airbox and I noticed a paddle of 2-stroke oil UNDILUTED! No smell of petrol, just thick 2-stroke oil as if it was just poured there! I thought it was strange but then again I suspected the faulty intake tube was somehow at fault for this! Notice that my bike uses a separate 2-stroke oil tank so I thought that when the oil pump was sending oil in the tube which has a hole on the top for that, some oil could have been kicked back from the carb's mouth in the lower side of the airbox. I then repaired the intake tube with a thin layer of 3M epoxy for plastics and rubber and on top of that a nice thick layer of some special black rubbery glue which is used for installing the windshields on cars. The bike worked nowhere far from perfect for a couple of days and then it started giving me a similar problem, only smaller: Engine works fine at very low RPM from idle to just above idle and then when RMP get a little bit higher but still very far far from midrange the engine starts to bog again so I either have to change to a higher gear and ride like grandma to keep it running smooth or I have to rev it until it reaches a point where bogging kinda fades ... I check the airbox again and what do I see? Again the puddle of oil is there. I'm almost sure that is what is causing the bog. But my big question is, what is causing the puddle? :think:
Please help !
Please help !