Hello fellow two stroke lovers. I have been enjoying the website for a long time, but this is the first time I have been compelled to post on the forum. I am coming to you with a problem that I am having a hard time fixing. I have been successfully rebuilding two strokes for nearly all my riding life, and have never ran into this issue before. I purchased a 2002 KX 100 from Craigslist for a buddy bike. The bike had a bad cylinder and piston, which I replaced with all brand new Kawasaki parts I purchased on e-Bay (still in Kawasaki bags/boxes from a dealer in Texas). I followed the specs in the Clymer manual, and the bike started on the third kick after the rebuild. It idled very high, so I adjusted the idle screw and started it again. It idled very well and sounded crisp. I followed my tried and true break in method by riding at no more than 1/2 throttle until warm, then letting it cool off. During the first ride it bogged a bit, but ran okay. I then rode it at no more than 3/4 throttle until warm. During this ride it ran great at first, but soon lost power and eventually died. I thought it had fouled the plug, so I replaced with a brand new one. I let it sit for a while and then tried to start it again. No dice. After exhausting my leg, I took it in to check fuel flow and spark. The bike is getting spark, and it appears to be timed correctly. When I pulled the spark plug, it was dry and did not smell like raw fuel. I used an inspection camera to look in the cylinder through the spark plug hole, and everything looked great (but dry). The piston is freely spinning in the cylinder, and there are no marks on it or the cylinder wall. When you put your finger over the spark plug hole, it blows your finger off, indicating good compression. I checked the pet**** on the tank for flow, and gas flowed out into the gas can. I took the carb off and cleaned every opening and passage with carb cleaner. I even removed the jets and ran carb cleaner and compressed air through them. Still nothing. I pulled the float bowl plug on the bottom of the carb, and gas ran out. I am convinced it is getting gas to the carb. I checked the reed valve, and it appears unobstructed and will open if you put your finger down the reed block.
As a last resort (knowing it's not really good for a two stroke), I sprayed some Ether in the carb to see if it would start. Once again, no dice. When you open the throttle, the engine tone changes, but it does not sound like it wants to start. I pulled the plug, and could not smell the Ether on the plug, or gas for that matter. I then opened up the slide on the carb and tried squirting through the carb into the reed block. Still nothing in the cylinder. I am guessing I have an obstruction in the fuel path, but I'm not sure which thing to look at. Any suggestions you guys might have would be really appreciated. Thank you in advance.
