Page 2670 - Foton Workshop Manual - Sauvana

62-618 DIAGNOSIS-ENGINE CONTROL SYSTEM

7. Check pressure of the fuel system

(a). Check pressure of the fuel system.

Is the result normal?
Yes> To step 9.
No> Repair or change the fuel system parts or circuits if the fuel pressure is lower than 400
kPa,go to the step 8.

8. Check the fuel supply of the fuel system

(a). Check whether it has leakage or block in the oil inlet or not.
(b). Check whether the fuel filter is blocked or not.

Is the result normal?
Yes> To step 9.
No> Clean and change the default parts.

9. Check the exhaust system

(a). Check the exhaust system and three-way catalytic converter.
(b). Use the exhaust backpressure gauge to check whether the exhaust pipe is blocked.

Is the result normal?
Yes> To step 10.
No> Change the default parts.

10. Check the cylinder pressure

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

Is the result normal?
Yes> To step 12.
No> To step 11.

11. 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 result normal?
Yes> To step 12.
No> Perform the alignment operation of the timing belt or change the timing belt.

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