Toyota Sienna Service Manual: Engine

GENERAL MAINTENANCE

HINT:

Inspect these items when the engine is cold.

1. INSPECT DRIVE BELT HINT: (See page EM-6)

2. REPLACE SPARK PLUGS

HINT:

(See page IG-8)

3. INSPECT AIR FILTER

(a) Remove the air filter.

(b) Visually check that the air filter is not excessively damaged or oily.

HINT:

Oiliness may indicate that the PCV valve is stuck.

If necessary, replace the air filter.

(c) Clean the filter with compressed air.

First blow from the inside thoroughly and then blow from the outside of the filter.

(d) Reinstall the air filter.

4. REPLACE AIR FILTER

(a) Replace the air filter with a new one.

5. REPLACE ENGINE OIL AND OIL FILTER

HINT:(See page LU-3)

6. REPLACE ENGINE COOLANT AND INSPECT RADIATOR FIN

HINT:

(See page CO-6)

(a) Check that the radiator and condenser are not blocked with leaves, dirt or insets.

Clean them if necessary, and check the hose connection for the installation condition, corrosion etc.

7. INSPECT GASKET IN FUEL TANK CAP

HINT:

(See page EC-42)

8. INSPECT FUEL LINES AND CONNECTIONS, FUEL TANK VAPOR VENT SYSTEM HOSES AND FUEL TANK BANDS

1. Visually check the fuel lines for cracks, leakage, loose connections, deformation or tank band looseness.

9. INSPECT EXHAUST PIPES AND MOUNTINGS

(a) Visually check the pipes, hangers and connections for severe corrosion, leaks or damage.