Yamahammer Posted November 20, 2003 Report Posted November 20, 2003 On the vacum theroy do you think it is possible that on the L carb the one with the choke and the hole in the slide tunnel.Is it possible that it is drawing enough vacum to suck the slide aginst the side causing it to stick...? Quote
Holyman Posted November 20, 2003 Report Posted November 20, 2003 ...its dead fiddly an awkward to do... You gotta hand it to a guy that is confident enough to use a term like "dead fiddly" and still give tech help on your carbs jk My theory is that minute amounts of moisture combined with the velocity of the air coming thru the carb cause a minor frosting of the slide and the slides stick. I've now revised that to say this... if the tube between the carbs is not 100% air tight and the engine is at a high idle, the carbs may be drawing a little air thru the choke tube instead of totally thru the filter. I'm not talking about a gaping hole or crack in the tube but when rod would run the hose over the carbs it would stick. Quote
Yamahammer Posted November 20, 2003 Report Posted November 20, 2003 Mine would not stick by free reving it but would on a ride.I put it all back together and ran the hose over it for about 10 minutes reving it and it never stuck. I did notice that it would bog more with the water on the right carb running the water over the top but did not make a differance on the choke tube pull slide and so on.. I did zip tie the choke tube to the L carb so i will do the same on the r and re test. will ride this sat and really test.. Any one ride with the seat off and poor water on the carbs to see if it stuck.. There has got to be a fix with all these great minds we can figure it out.. What did everyone do that was having the problem aftermarket carbs? I also noticed that the left slide has 2 notchec cut in the top where as the r has only one in the rear.. Quote
oih8u2 Posted November 21, 2003 Report Posted November 21, 2003 hey if the carbs are totally clean and no damage to the slides, try lookin at the needles to see if there straight Quote
Yamahammer Posted November 21, 2003 Report Posted November 21, 2003 needles are straight even replaced them with a different set while i was riding that day same thing. Quote
boonman Posted November 21, 2003 Report Posted November 21, 2003 I am thinking it has something to do with the choke circuit. Think about it, the choke circuit is specific to banshee carbs, and banshee carbs are the only ones to stick. I wish I could go riding, and check this out. But I can't. Anyways, perhaps a check would be that when the throttle sticks, pop the choke on like halfway to feed some fuel through the circuit. Quote
Bense Posted November 21, 2003 Report Posted November 21, 2003 Its definatly a vacuum leak, and more then likley it is with the choke tube or the choke pull itself. Make sure everything is seating like it is supposed to. Quote
Yamahammer Posted November 23, 2003 Report Posted November 23, 2003 Well tested it and it stuck again a couple times in an hour and a half ride and when it did if you pulled the choke it unstuck and ran normal so i am going to block the choke tube off and retest. Quote
streetshee Posted November 23, 2003 Author Report Posted November 23, 2003 where the choke goes into the left carb,isnt there an o ring to seal it? maybe the seal needs replacing? since i hoseclamped my pipe tight havent had any more probs, seeya. Quote
Holyman Posted November 23, 2003 Report Posted November 23, 2003 I am thinking it has something to do with the choke circuit. Think about it, the choke circuit is specific to banshee carbs, and banshee carbs are the only ones to stick. I wish I could go riding, and check this out. But I can't. Anyways, perhaps a check would be that when the throttle sticks, pop the choke on like halfway to feed some fuel through the circuit. The RZ had a choke tube too and I can't imagine there's be a runaway 2stroke street bike without the factory making some very obvious changes!!! Quote
Aussie Quad Racer Posted November 24, 2003 Report Posted November 24, 2003 back in the day when the rd400 and 350's came out. they had this same problem of throttles sticking in the rain. my bike did it all the time when going through puddles and rain and i solved it by polishing the inside of the carb body, where the slide run, to a mirror finish. Have had no problems since. Quote
boonman Posted November 24, 2003 Report Posted November 24, 2003 I just noticed a funny thing on my spare set of carbs as I was cleaning the garage the other day. I looked in the air cleaner side of the carb, and there is a port that goes in from the "bell" of the carb, and exits into the slide chamber. There is a brass ball that is pressed into the back of the carb in this "port". I don't know how to explain it, but I think this may be some sort of fault. Also, I didn't see where the choke circuit dumped anything into the slide chamber to make it stick. but, hearing the solution that popping the choke made it unstick throws a monkey wrench into the problem... I have to research it further. I may disassemble these carbs completely and see Exactly what makes them tick. I was gonna sell them, but in the name of research, I may donate them to the banshee gods!!! Quote
Holyman Posted December 12, 2003 Report Posted December 12, 2003 Anyone got any new results/ theories? How did plugging up both choke tube holes work? If at all? Quote
blk02banshee Posted December 12, 2003 Report Posted December 12, 2003 Mine would stick everytime I washed it, and the last time(probably coincidence), after I washed it, and went to start it, before pulling the choke, I took a paper towel, and dried off all the water from around the choke knob and outer dust seal. It did'nt stick at all, and was the first time it did'nt after being wet. Quote
Aussie Quad Racer Posted December 12, 2003 Report Posted December 12, 2003 get chrome slides to. this will stop it. I have crome slides for my 34mm round slide carbs Quote
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