Service Repair Manual

MPI SYSTEM
Throttle Body (Throttle Valve Area) Cleaning
NOTE
Disconnect the air intake hose from the throttle body, and
check the throttle valve surface for carbon deposits, rotating
the valve. Apply the spray cleaning solvent on the valve to
remove carbon deposits.
1. Run the engine until warm.
2. Remove the air intake hose from the throttle body.
3. Spray cleaning solvent into the valve through the throttle
body intake port and leave it for about 5 minutes.
4. Start the engine, race it several times and let it idle for about
1 minute.
NOTE
If the idle speed becomes unstable (or if the engine stalls),
slightly open the throttle valve to keep the engine running.
5. Repeat steps 3 and 4.
6. Attach the air intake hose.
7. Disconnect the battery terminals and reconnect them more
than 10 seconds.
8. Adjust the idle speed control and throttle position sensor.
Fuel Filter Replacement
1. Reduce the internal pressure of the fuel pipes and hoses by
completing the following operations.
o Disconnect the fuel pump harness connector at the rear
of the fuel tank.
o Start the engine and after it stalls, turn the ignition
switch to OFF.
o Disconnect the battery negative (-) terminal.
o Connect the fuel pump harness connector.
2. Remove the eye bolts while holding the fuel filter nuts
securely.
CAUTION
Cover with a shop towel to avoid gasoline from splashing.
3. Remove the fuel filter mounting bolts, then remove the fuel
filter from the fuel filter clamp.
4. After replacing the fuel filter, check for fuel leaks.