Isuzu 22LE - Engine Cranks but will Not Run; Ignition on; Step Action; Verify Repair

6E1-110 DRIVEABILITY AND EMISSIONS
Engine Cranks But Will Not Run (Cont'd)
Step Action Value(s) Yes No
21
1. Remove the spark plugs from all cylinders.
2. Visually inspect the spark plug electrodes.
3. Replace any spark plugs with loose or missing
electrodes or cracked insulators.
Did your inspection reveal any spark plugs exhibiting
excessing fouling?
- .
Correct the
fouling
condition Go to Step 33
22
Verify repair.
Attempt to start the engine.
Is there still a problem?
- Go to Step 23 Go to Step 22
23
1. Ignition OFF install a fuel pressure gauge at the test
fitting on the fuel supply line in the engine
compartment.
Caution: Use a shop cloth to absorb any fuel leakage
while making the connection.
2. Check the engine and observe the fuel pressure.
Is the fuel pressure within the specified values, and does it
hold steady for 2 seconds?
285-375 kPa
(43-55 psi)
Go to Step 25 Go to Step 24
24
Is any fuel pressure indicated?
-
Go to Fuel
System
Electrical
Test
Go to Fuel
System
Diagnosis
25
1. Install switch box Injector Adaptor Cable 5-8840-2589-
0 and Fuel Injector Tester 5-8840-2618-0 to the injector
connector.
2. Activate an injector.
Did the fuel pressure drop when the injector was
activated?
-
Go to Step 26
Go to Fuel
System
Diagnosis
26
Pressurize the fuel system using the ignition ON and
switch the injector connector to test pressure drop for
each injector.
Was there a pressure drop when each injector was
activated?
-
Go to Step 27
Go to Fuel
System
Diagnosis
27
1. Remove all SST and re-assemble the all connectors
and fuel hoses to original position.
2. Crank the engine.
Does the engine start smoothly?
-
Go to Step 33 Go to Step 28
28
1. Raise the vehicle and disconnect the CKP sensor
harness.
2. Ignition ON.
3. With a test light to ground, probe the CKP ignition feed
harness terminal.
Did the light illuminate?
-
Go to Step 29 Go to Step 30
29
1. Ignition ON.
2. At the CKP harness connector, connect a test lamp
between the ignition and ground terminals.
Did the lamp illuminate?
-
Go to Step 31 Go to Step 32