Hello I was curious. I had posted before where when the bike seemed to idle around 3-4k. Well today, after a short 15-20 ride, bike warmed, I decided to take the tank off to look at the carbs. I remember back to when I first bought the bike, the bike I had a motorcycle mechanic come over and the exact thin happened. We took the tank off and the bike idled fine. Understand that we did not have a make shift tank, only using the fuel in the bowls. The minute we put the tank on the high idle was there again. Now, since purchasing in February, I have changed all the cables. So today, once again I take the tank off and start her up and she idles. I was able to go up and down on the idle adjustment screw and actually have an effect. Normallly the screw is not even touching the throttle arm, it idles high so I back the screw out to take that out of the equation.
I took the caps off each carb and found that there is 1 rubber o-ring under the sync cap for carb4, no o-ring for carb3 and carbs 1-2 have an o-ring that looks a hair to small. I know I need to get the right size o-rings, so it's kinda hard to diagnose now, but is it worth "rigging" a tank to see if the bike will idle? BTW, all diaphrams look good with no holes, tears or cracks. And they were also sealed under the cap correctly.
I took the caps off each carb and found that there is 1 rubber o-ring under the sync cap for carb4, no o-ring for carb3 and carbs 1-2 have an o-ring that looks a hair to small. I know I need to get the right size o-rings, so it's kinda hard to diagnose now, but is it worth "rigging" a tank to see if the bike will idle? BTW, all diaphrams look good with no holes, tears or cracks. And they were also sealed under the cap correctly.
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