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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through May 10, 2010 » If Throttle Sticks - Check the throttle body seating « Previous Next »

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Dcmortalcoil
Posted on Sunday, May 09, 2010 - 10:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

When I installed the G2 Tamer throttle (see my other thread). I opened the airbox and removed the air filter so that I can see if the throttle is operating correctly from fully closed to wide open. Throttle snaps back fine without any binding. Worked really smoothly.

But when I closed the airbox, the throttle was sticking. Was not sure what was causing the problem. So I took off the airbox base and checked if there was any binding in the throttle cables. I could not see any problem.

After rechecking everything, I noticed that the rear throttle body was a tad (like 1 mm) high relative to the rear rubber intake neck (P0817.1AM). So I loosened the upper bolt that secures the throttle to the rear rubber neck (the rubber piece that mounts the throttle body to the intake flange) and pushed it down. It snapped right in, making muffled, but distinct pop sound. Put everything back in - throttle no longer sticks.

People having throttle sticking problem, particular after canister install, check the throttle body seating. It seems that the throttle body has to be seated perfectly for the throttle to operate smoothly.

Someone here has previously mentioned that the throttle cable did not line up exactly and thus had to slightly bend the throttle cable holder. Perhaps the problem lied with the throttle body not being properly seated.
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Buellfreak
Posted on Monday, May 10, 2010 - 01:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Iv had the same problem.. Still cant figure out how to get everything to line up so it dosnt stick. Any suggestions?
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Dktechguy112
Posted on Monday, May 10, 2010 - 01:20 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am having the same problem.
when you say "So I loosened the upper bolt that secures the throttle to the rear rubber neck (the rubber piece that mounts the throttle body to the intake flange) and pushed it down. It snapped right in, making muffled, but distinct pop sound. Put everything back in - throttle no longer sticks. "
do you mean you loosened the clamp, part 7, or do you mean you loosened the bolt part 2?



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Dcmortalcoil
Posted on Monday, May 10, 2010 - 01:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes. I loosened the upper rear clamp 7 - was easily accessible. Take a look at the upper edge of the rubber neck and see if they are evenly seated all the way around. Mine was apparent that the rear most part of the throttle body was sticking up a tad more than other places. The rubber neck has a groove that seats the lower flange part of the throttle body. So when they mate properly, the lower flange part will be in the groove (that what I meant by muted pop noise).
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Dcmortalcoil
Posted on Monday, May 10, 2010 - 02:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bfreak,

Take the throttle cable off the switch assembly. Untangle the throttle cables as much as possible. Position the throttle cables straight as possible coming out from the frame. Pull the metal cable with your hand while holding the cable housing with the other hand. Does it stick or not. If it sticks, then you may have the problem that I had. If not, check the point where the cable come out of the frame. Make sure that they are positioned and tied to the black plastic guide. The binding can occur there.

BTW, I replaced the throttle cable with the longer CR high bar throttle cable and routed the wire higher, like this because of the brake issue (replaced the m/c).


throttle cable
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