Wrangler L6-258 4.2L VIN C 2-bbl (1988)
Accelerator Pump: Adjustments
Accelerator Pump Adjustment
NOTE: It is necessary during this adjustment to change the curb idle speed adjustment screw setting. Be sure to count and record the number of turns
on the screw for future reference.
1.
Turn the curb idle speed adjustment screw counterclockwise until the throttle valves are closed.
2.
Open the choke valve until the fast idle cam allows the throttle valves to seat in their bores.
3.
Turn the curb idle speed adjustment screw clockwise until it just contacts the stop, then continue to turn it 2 full turns.
4.
Using a T scale, measure the distance between the surface of the air horn and the top of the accelerator pump shaft. Refer to SPECIFICATIONS
for the correct dimension.
5.
Loosen the pump arm adjusting lock screw and rotate the sleeve to adjust the pump travel to the correct setting. Tighten the lock screw. Return
the curb idle adjustment screw to its original setting.