Emission control devices
Fuel injection system descriptionDTC “c28” (p1655): secondary throttle
valve actuator (stva) malfunction
Detected condition and possible cause
Detected condition
Possible cause
The operation voltage does not reach the stva.
Ecm does not receive communication signal from the
stva. Stva can not operate properly or its motor locked
Stva malfunction.
...
Oil pan / oil pressure regulator / oil strainer
removal and installation
Note
the oil pan/oil strainer/oil pressure regulator
cannot be serviced with the engine installed
in the frame.
Removal
Remove the engine assembly from the frame. Refer to “engine assembly
removal” in section 1d .
Remove the plate (1).
Remove the oil pan ...
Valve seat repair
The valve seats (1) for both the intake and exhaust
valves are machined to three different angles. The seat
contact surface is cut at 45°.
Intake valve
Exhaust valve
Caution
the valve seat contact area must be
inspected after e ...