Throttle Body: Testing and Inspection
Throttle Body TestNOTE: Do not adjust the throttle stop screw. It is preset at the factory.
1. With the engine off, check the throttle cable operation.The cable should operate without binding or sticking.
- If the cable operates OK, go to step 2.
- If the cable binds or sticks, check it and its routing. If it's faulty, reroute it or replace it and adjust it, then go to step 2.
2. Operate the throttle lever by hand to see if the throttle valve and/or shaft are too loose or too tight.
- If there is excessive play in the throttle valve shaft, or any binding in the throttle valve at the fully closed position, replace the throttle body.
- If the throttle valve and shaft are OK, go to step 3.
3. Check for clearance (A) between the throttle stop screw (B) and the throttle lever (C) at the fully closed position. If there is any clearance, replace the throttle body. Do not adjust the throttle stop screw.