Diesel Data: Automotive Repair

Throttle Body Synchronization Service

Synchronize the throttle bodies if there is a gap between the adjustment screw and the linkage lever. Also, synchronize the throttle bodies after removing and installing the throttle bodies.

Idle Speed Screw:




1. Install 0.004 inch feeler gauge between the idle speed screw and throttle lever on the right throttle body.

Adjustment Screw:




2. Loosen the adjustment screw locknut on the synchronization shaft.
3. Turn adjustment screw until it just contacts the lever on the synchronization shaft. Tighten the locknut to 4 Nm (36 in. lbs.) torque.
4. Check clearance between the throttle lever and the idle speed screw. The 0.004 inch feeler gauge should drag when removed. Also, a 0.006 inch feeler gauge should not fit between throttle lever and idle speed screw.