Motorcycle Glossary
Throttle body
In Turkish: Gaz kelebeği
In short
The throttle body controls how much air enters a fuel-injected engine using a butterfly valve linked to the twist grip.
The throttle body usually carries the throttle position sensor (TPS), the injector and an idle air control valve (ISC/IACV). The twist grip opens the butterfly via a throttle cable or electronic ride-by-wire.
- Carbon build-up around the butterfly can make the idle hunt or drop; clean it with a suitable cleaner.
- A faulty TPS can cause misfiring and a warning light.
- On some models an idle relearn (reset) is needed after cleaning or disconnecting the battery.
Also known as (including Turkish names)
- Gaz kelebeği gövdesi
- Boğaz
Related products
Injectors & Throttle Bodies
Last updated: October 9, 2026
