Isuzu KB P190. Manual - part 807

Fuel System – V6 

Page 6C – 26 

 

 

Fuel vapour remains in the fuel tank even 
when completely empty. Seal all openings in 
the fuel tank using suitable material or a 
plastic plug. Ensure no naked flames or other 
ignition sources are nearby. Ensure all 
cellular phones (and transmission devices 
that may cause any metal objects to become 
unintentional receiving antennas) are 
switched off. 

15 

Place a suitable material over the opening in the fuel tank to prevent any foreign matter from entering the fuel 
system. 

Fuel Level Sender Assembly 

Test 

1 

Measure the resistance across terminals 2 and 3 of 
the fuel pump connector. Take the following 
measurements: 

a 

With the float arm assembly in the empty 
position, the resistance should be approximately 
250 

Ω. 

b 

With the float arm assembly rotated to the full 
position, the resistance should be approximately 
40 

Ω. 

2 

If the resistance at either of these positions is not 
within tolerance, replace the modular fuel pump and 
sender assembly. 

 

Figure 6C –  27 

Reinstall 

Reinstallation of the modular fuel pump and sender assembly is the reverse of the removal procedure, noting the 
following: 

1 

Fit a new O-ring (3) to the modular fuel pump and sender assembly. 

2 

Install the modular fuel pump and sender assembly into the fuel tank, taking care not to damage the fuel sender 
float or arm. 

3 

Ensure the locator in the pump cover engages in the slot in the fuel tank opening. 

4 

Using tool No. AU469 and a half-inch breaker bar, install the modular fuel pump and sender assembly cover 
retainer lock ring by turning it clockwise. 

5 

Refit the three quick connect fittings. 

 

 

 

Fuel System – V6 

Page 6C – 27 

 

4.6 

Evaporative Emission Control Canister 

Remove 

1 

Raise the vehicle on a hoist to give access to the evaporative emission control canister, located above the spare 
wheel , refer to 0A General Information. 

2 

Disconnect the evaporative emission control canister 
purge line (3) by using the following procedure: 

a 

Grasp both sides of the quick-connect fitting. 
Twist the connector 1/4 turn in each direction in 
order to loosen any dirt within the quick-connect 
fitting. 

 

Wear safety glasses when using compressed 
air. Do not blow compressed air onto any 
body part. 

b 

Using compressed air, blow any dirt out of the 
quick-connect fitting. 

c 

Grasp the quick-connect fitting and push it 
towards the canister. 

d 

Squeeze the quick-connect fitting to release the 
retaining tabs, then pull back on the connector to 
remove the canister purge line from the canister.

Figure 6C –  28 

3 

Disconnect the fuel tank vent line (4) by using the 
following procedure: 

a 

Grasp both sides of the quick-connect fitting. 
Twist the connector 1/4 turn in each direction in 
order to loosen any dirt within the quick-connect 
fitting. 

 

Wear safety glasses when using compressed 
air. Do not blow compressed air onto any 
body part. 

b 

Using compressed air, blow any dirt out of the 
quick connect fitting. 

c 

Grasp the quick-connect fitting and push it 
towards the canister. 

d 

Squeeze the quick-connect fitting to release the 
retaining tabs, then pull back on the connector to 
remove the tank vent line from the canister. 

Figure 6C –  29 

Fuel System – V6 

Page 6C – 28 

 

4 

Remove the canister vent line (2) from the canister (1) 
by twisting and pulling it off. 

 

Refer to 4.1 Fuel Lines And Quick Connect Fittings for 
further information. 

Figure 6C –  30 

5 

Remove the canister retaining nut (2). 

6 

Remove the canister from the retaining stud and then 
slide the canister (3) out of the retaining bracket (1). 

Figure 6C –  31 

Service Check 

1 

Remove the canister. 

2 

Shake the canister. There should be no audible sound 
of carbon movement. 

3 

Using low pressure compressed air (20–35 kPa), blow 
into the tank vent port (3). Check that air flows freely 
from the canister vent port (1). Block the canister vent 
port (1); air should flow from the canister purge 
port (2). 

4 

If airflow through the canister vent port (1) is limited, 
clean the atmospheric filter by blocking off the fuel 
tank vent port (3) and blow compressed air at 
approximately 300 kPa through the canister purge 
port (2). 

5 

Check airflow through the filter as in step 3. If airflow 
through the canister vent port (1) is still limited, replace 
the canister. 

Figure 6C –  32 

Fuel System – V6 

Page 6C – 29 

 

6 

Block the canister vent port (1) and the canister purge port (2). Apply low-pressure compressed air 
(20–35 kPa) to the tank vent port (3). If any air leaks from the canister (that is, around the ports or seams), replace 
the canister. 

N O T E  

In dusty areas, an alternative is to block the 
canister purge port 

(2). Blow air through the 

canister vent 

(1) port and check that air is 

expelled through the tank vent port (3). 

Reinstall 

Reinstallation of the  evaporative emission control canister is the reverse of the removal procedure. 

1 

Reinstall the canister into the retainer (1) and over the 
retaining stud. 

2 

Reinstall the canister retaining nut (2), then hand-
tighten. 

3 

Ensure the canister is located correctly and tighten the 
canister retaining nut (2) to the specified torque. 

 

 

Evaporative emission control canister 
retaining nut  
torque specification .....................................2.0 – 5.0 Nm 

 

Figure 6C –  33 

4 

Reinstall the canister vent line (2). 

5 

Align the canister purge line quick-connect (3) with the 
canister purge line port. Push the quick-connect firmly 
onto the port. 

6 

Align the fuel tank vent line quick-connect (4) with the 
fuel tank vent port. Push the quick-connect firmly onto 
the port. 

7 

After installation, pull on each quick-connect to ensure 
the connections are secure and locked in position. 

Figure 6C –  34