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Originally Posted by Old School
Today I replaced the plug, had to re-tap for it. Changed the oil. Of course in all this to make things easier I took the tank off for the spark plug. I worked out the high idle issue so I thought. Now when I start it up it seems to idle at a more normal rpm, still a little higher but much better. The issue I am having now is that it runs good even under a revved condition it will stall shortly after starting it. I had it out the other day and did 90 mile on it with no problems. Now I do some routine maint and I get this. I have searched other stalling threads and the only thing I can figure is that I have a vacuum issue that is keeping it from getting consistent fuel???? In the process of all this I checked the air filter and it looks good. I also opened up the carb and it looks clean and the throttle area responds correctly and the plunger moves freely. I am at a loss. I put the new plug in gapped at factory. NGK. Oil level is measuring correctly. Thanks and I hope I can get some help with this. I am starting to wish I had done nothing but just ride it w/o maint.
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Sounds like you have some dirt/rust sediment that has made it's way from your tank to inside your carb. When you say "you worked the high idle issue" please explain in more detail. Did you have a high idle prior ? How exactly did you (or not) correct the hight idle ? Most newer mc owners when faced with intermittent running issues replace the spark plug, yet a bad spark plug is rarely the culprit. As for your carb hoses, the larger dia hose is the fuel feed coming from the tank it attatches to the carb nipple on the LH side of the carb body. There is a second hose in the shape of an "L' that has 2 different id diameters at each end. This hose is the vaccum feed for the fuel valve (petcock) . This hose goes from the RH side of the carb to the fuel valve. There is also a long thin hose that goes from the bottom of the carb to "nowhere" this is the bowl drain hose. Here's an excellent tip, in the future when dissasembling unfamiliar components, take several digital pics BEFORE you dissasemble. So at a later time when you are re-assembling the components and you can't remember which hose goes where etc.., you have a handy accurate pic to help you get things right. I've been wrenching for the past 30 years, and I still take pics ! :2tup: