Dash Pot Inspection And Adjustment (Non-Turbo-M/T) - Mitsubishi 1989-1993 GALANT Service Manual

ENGINE <DOHC> - Service Adjustment Procedures
I
DASH POT INSPECTION AND ADJUSTMENT
<Non-Turbo-M/T>
(1) Perform after inspecting the idle rotation speed.
(3) Either set the tachometer or connect the data link connec-
(4) Start the engine.
(5) Open the throttle valve until the dash pot rod is fully
(6) Gradually close the throttle valve until you find the point
(7) Check the engine speed (speed when the dash pot begins
(8) If outside the standard value, loosen the rod's lock nut and
(9) To release the maintained state of the throttle valve, check
(3) lf any abnormal noise
lash adjuster
so that cylinder No. 1
the top dead centre of the compression.
arrow mark to check whether the rocker arm is lowered
or not.
the crankshaft 360 degrees clockwise.
turn
at the area indicated by the 4 arrow mark.
arm
above the rocker arm lash adjuster is pressed, the lash
adjuster is defective and must be replaced. When re-
placing the lash adjuster, bleed the air from all adjus-
ters and then assemble them. Then inspect with proce-
dures @I to 0, and confirm that there are no abnormal-
ities.
NOTE
The lash adjuster can be accurately checked for de-
l
fects with the leak down test.
Refer to the engine service manual for the leak
l
down test and lash adjuster air bleeding procedure.
If the rocker arm is extremely hard when pressed
down, the lash adjuster is normal, so look for a different
cause of abnormal sound.
The vehicle should be prepared as follows before the
inspection.
Engine coolant temperature: 80- 95°C (176-
l
Lights, electric cooling fan and accessories: OFF
l
Transaxle: Neutral
l
Steering wheel: neutral position
l
tor (white) to the scan tool.
NOTE
For setting the tachometer. refer to GROUP 13 - Service
Adjustment Procedures.
stroked.
where the throttle lever touches the dash pot rod (the dash
pot begins to shorten).
Maintain the throttle valve at this touching point,
to operate).
Standard value: 3,900 f 200 rpm
turn the rod to adjust.
that the engine speed gradually decreases to
(fixed SAS).
positioned at
IS
idle speed,
the