Isuzu 4JA1 Workshop Manual page 48

6A – 26 ENGINE MECHANICAL
Except EURO III model
For EURO III model
Draining Procedure
The indicator light will come on when the water level in the
water separator exceeds the specified level.
Drain the water and foreign material from the water
separator (inside chassis frame) with the following
procedure.
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1. Place the drain pan under the drain plug.
2. Loosen the drain plug and drain water.
3. After draining the water, tighten the drain plug.
4. Operate the priming pump on the fuel filter several
5. Check the water separator indicator light. It should be
Air Bleeding
1. Operate the priming pump until strong resistance is
2. Wait 1 minute, and operate the priming pump until
3. Once more wait, and operate the priming pump until
4. Turn the ignition switch to the "ON" position. Wait until
5. Turn the ignition switch to the "START" position and
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6. If the engine does not start, repeat Step 3 - 5.
7. Allow the engine to idle for 3 minutes to bleed air
Note:
Insufficient air bleeding may cause the Diagnostic
Trouble Code (DTC) store or improper engine
performance.
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times and check for fuel leakage.
off.
felt.
strong resistance is felt.
strong resistance is felt.
the glow indicator lamp turns off.
crank the engine until it starts.
completely form the fuel system and check for fuel
leakage.