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FUEL SYSTEM AND THROTTLE BODY 5-27
Step 3
• Turn in all the idle air screws to the complete close position.
• Check for difference of vacuum between #1 and #2.
• Equalize these two by gradually turning back the air screw on
the higher vacuum side until the vacuum comes down to the
lower. Similarly perform the same procedures between #3
and #4.
• Check for the synchronization adjustment. If the adjustment is
not yet correct, remove each idle air screw and clean them
with a spray-type carburetor cleaner and blow dry with a com-
pressed air.
• Also, clean the idle air screw passageways.
NOTE:
* Slowly turn the idle air screw in clockwise and count the num-
ber of turns until the screw is lightly seated.
* Make a note of how many turns were made so the screw can
be reset correctly after cleaning.
Step 4
Repeat the procedures of Step 2 and Step 3.
THROTTLE POSITION SENSOR (TPS) SETTING
After all adjustments are completed, check or adjust the TPS
setting condition.
(Refer to page 4-20 for TPS setting procedure.)