Page 2646 - Foton Workshop Manual - Sauvana

62-594 DIAGNOSIS-ENGINE CONTROL SYSTEM

Is the inspection result normal?
YES>To step 11。
No >Clean the injector. Check the working status of injector again. If it still injects wrongly,
change it.

11. Check the cylinder pressure

(a). Perform the test of cylinder compression pressure.

Is the inspection result normal?
YES>To step 13。
No >To step 12。

12. Check the engine valve timing

(a). Check whether the engine timing gear mark is aligned, damaged or not, the belt is
loose, detaching or not.

Is the inspection result normal?
YES>To step 13。
No > Perform the alignment operation of the timing belt or change the timing belt.

13. Check the motor machinery

(a). Use an endoscope to observe the in-cylinder condition.
(b). Observe and reflect the voltage changes.
(c). Dismantle and repair the motor internal fault:clean the carbon or disassemble
and check the motor cylinder cover. Check the valve, intake manifold has carbon
deposition. Such as: the gap between the piston ring and the cylinder is too tightly
loosed, cylinder pad leaks, valve tube loose, valve does not close well, and valve
has carbon deposition.

Is the inspection result normal?
YES>To step 14。
No >Repair the internal machinery fault of the motor.

14. Check the start signal of the start switch to the computer

(a). Whether the start switch signal transmits to the computer when check the computer
wiring harness starting.

Is the inspection result normal?
YES>To step 15。
No >Maintain or change the default part.

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