B250 3/4 Ton Van V8-360 5.9L (1984)
and reinstall PCV valve. Idle speeds with the engine in normal operating condition (all hoses and wires connected) may vary from set speeds. DO
NOT READJUST.
Publication #81-370-7010
TSB 14-04-87 May 4, 1987 Publication #81-370-7010
5.
ACCELERATOR PUMP STROKE MEASUREMENT
(1)
Remove bowl vent cover plate and gasket.
(2)
With pump links and levers installed, adjust the throttle blades to the closed position by backing out the idle speed screw.
(3)
Set the distance from the top of pump lever to the top of bowl vent cover surface to .180" +/- .010" by bending the pump link. Check
that wide open throttle can be reached without binding.
(4)
Install gasket and bowl vent cover plate.
(5)
Reset Idle Speed.
6.
IDLE RPM ADJUSTMENT
Before checking or adjusting any idle rpm, check ignition and adjust, if necessary, using procedure in Group 8, Electrical. Ground the
carburetor switch on vacuum kicker with jumper wire. Disconnect and plug the vacuum hose at the air switching valve, Disconnect and plug
the 3/16 in. diameter canister purge control hose at the solenoid. Remove the PCV valve from the cylinder head cover and allow the valve to
draw underhood air. Install tachometer. Start and run engine until normal operating temperature is reached.
RPM Refer to VECI Label
(1)
Allow the engine to run for one minute for the engine speed to stabilize.
(2)
If the engine rpm is not correct, turn the idle speed screw to obtain the correct idle rpm.
(3)
Turn off engine. Unplug and reconnect vacuum hoses at canister, and air switching valve.
(4)
Remove tachometer and reinstall PCV valve. Idle speeds with the engine In normal operating condition (all hoses and wires connected) may vary
from set speeds. DO NOT READJUST.
