Periodic Maintenance Procedures
Radiator Hose and Pipe Inspection (coolant leak,
damage, installation condition)
The high pressure inside the radiator hose can cause
coolant to leak [A] or the hose to burst if the line is not
properly maintained. Visually inspect the hoses for signs
of deterioration. Squeeze the hoses. A hose should not
be hard and brittle, nor should it be soft or swollen.
Replace the hose if any fraying, cracks [B] or bulges [C]
Check that the hoses are securely connected and clamps
are tightened correctly.
Torque - Radiator Hose Clamp Screws: 2.0 N·m (0.20 kgf·m,
Engine Top End
Air Suction System Damage Inspection
Remove the fuel tank (see Fuel Tank Removal in the Fuel
System (DFI) chapter).
Separate the air switching valve hose [A] from the right
air cleaner housing.
Connect the following parts temporarily.
Fuel Pump/Fuel Level Sensor Lead Connector [A]
Fuel Hose [B] (see Fuel Tank Installation in the Fuel Sys-
tem (DFI) chapter)
Start the engine and run it at idle speed.
Plug the air switching valve hose end [A] with your finger
and feel vacuum pulsing in the hose.
If there is no vacuum pulsation, check the hose line for
leak. If there is no leak, check the air switching valve
(see Air Switching Valve Unit Test in the Electrical Sys-
tem chapter) or air suction valve (see Air Suction Valve
Inspection in the Engine Top End chapter).
PERIODIC MAINTENANCE 2-23