Page 627 - Foton Workshop Manual - Tunland (AT)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-481

5 . Check postprocessing system
(a) Check whether postprocessing system can work normally.

Is the inspection result normal?
YES>To step 6.

No >Maintenance related faults. 04

6 . Check the cylinder gasket
(a) Check whether the cylinder gasket is damaged.

Is the inspection result normal?
YES>To step 7.

No >Maintenance related faults.

7 . Check the cylinder cover
(a) Check whether the cylinder cover is damaged.

Is the inspection result normal?
YES>To step 8.

No >Maintenance related faults.

8 . Check the fuel injector
(a) Unplug the injector connector.
(b) Remove the fuel distribution pipes and injector outside the engine together.
(c) Add the battery voltage of 12 V directly to the injector.
(d) Every injector shall inject the fuel according to the standard flow and have uniform
atomization.

NOTICE
When check the injection status of the injectors, the fuel amount the four cylinder
injectors spraying differs largely in the same conditions, then it should change the
injector. Check whether the injector nozzle has colloidal substances or not, if it has,
it may use cleaning agent to soak and spray, or it may cause the insufficient of fuel
or bad acceleration etc.

DANGER
When testing the fuel system:

• Place a note with "Caution: Flammable" in the work area.
• Must work in a well ventilated area and with a carbon dioxide extinguisher.
• Smoking is strictly prohibited when working on the fuel system. Work areas
should be away from open flames and sparks.
• Put the fuel in an explosion proof container.

Is the inspection result normal?
YES>To step 9.

Page 627