1995 Suzuki Katana Carburetor flange/venturi stuck open?

  • Thread starter Thread starter Adam T
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Adam T

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Ok, so I just rebuilt and reinstalled the carb, air box, and gas tank onto my bike. It starts up and runs fine, idles fine, rev's fine, but here is the dilemma. The idle is tuned to 1500 rpms, and when you pull on the throttle, it will rev fine, to 5, 6, or whatever rpm you pull to, but when the rpms go down again, it won't descend lower than 3000 or so. So, with the tank raised and slightly to the side, I pushed on the flange to close the venturis. They will close manually and stay at the desired idle setting, but it won't return to idle on it's own. The choke is closed. The throttle cable is not sticking. It just won't descend below 3000 rpms on its own. Any advice on why it is sticking?
Cheers~
PS: Also, I tried with the air filter on and with it off to make sure that air flow was not an issue. All adjustments have been attempted for the idle, and the throttle (both at the carb and at the handle).
It is a single action throttle, so just the one cable. Diaphragms are fine, actually replaced the o rings mentioned, they are about an 1/8th of an inch. So small you have to order them.
 
Couple of things to check: check the return cable slack as well the other cable. Both should have adequate slack 3mm or so without being too loose. Even double check that you didn't mix up the cables. You mentioned the one cable, so if you only have the one, sorry for being confusing.

The slides should not stick, so could you have left out any part of the diaphram? There is usually a tiny o-ring in the diaphram cover.
 
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