4-72 FI SYSTEM
THROTTLE VALVE SYNCHRONIZATION
Check and adjust the throttle valve synchronization between two
cylinders.
! 09913-13121: Vacuum balancer gauge
NOTE:
Before balancing the throttle valves, calibrate each vacuum bal-
ancer gauge.
• Remove the fuel tank and air cleaner box. (#4-52 and -60)
• Remove the rubber caps
1 from the vacuum nipples on the
respective throttle bodies and connect the vacuum balancer
gauge hoses to each vacuum nipple.
• Connect the removed IAT sensor
2 and IAP sensor
3.
• Connect the fuel tank and fuel delivery pipe with the fuel feed
hose (special tool).
! 09940-40220: Fuel pressure gauge hose attachment
• Connect the fuel pump lead wire coupler.
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