2086043

1.

Remove suspect cylinder’s spark plug cable.

2.

Visually/physically inspect the following items:

1)

Damage, crack and flashover

3.

Measure the resistance of the spark plug cable referring to specification.

Specification : Spark plug cable(kΩ) : 5.6kΩ/m ± 20%

note

Resistance should not be higher than 10,000Ω per foot of cable. If resistance is higher than specification, replace the cable.

4.

Is resistance within the specification?

YES

▶ Go to "Spark Plug Inspection " procedure.

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

1.

Remove suspect cylinder’s spark plugs.

2.

Visually/physically inspect the following items:

1)

Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks.

2)

Check for plug gap : 1.0 - 1.1 mm (0.039 - 0.043 in.).

3)

Check if the spark plug for the relevant cylinder is lighter in color than the other plugs.

3.

Was a problem found in any of the above areas?

YES

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

NO

▶ Go to "Fuel Injector Inspection" procedure.

1.

Check the fuel injectors for clogging or any restrictions.

Test Condition : Ignition "OFF".

Specification : No clogging and restriction.

2.

Is the fuel injector OK?

YES

▶ Visually/physically inspect the engine mechanical problem as below:

1)

Bent push rods.

2)

Leaky or sticky valves or rings.

3)

Excessive valve deposits.

4)

Weak valve spring.

5)

Leaking head gasket.

If NG, repair as necessary and go to "Verification of Vehicle Repair" procedure.

If OK, go to "Ignition Coil Inspection" procedure.

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

1.

Ignition "OFF"

2.

Disconnect ignition coil connector

3.

Visually/physically inspect the following items:

1)

Damage, cracks and flashover.

4.

Measure the resistance in each primary coil, referring to specification.(Component side).

Specification : Approx. 0.67 ~ 0.82 Ω

No.1 ＆ 4 cyl. : terminals 3 ＆ 2

5.

Is resistance within the specification?

YES

▶ Go to "Timing Inspection" procedure.

NO

▶ Test with a new ignition coil and check for proper operation. If problem is corrected, replace ignition coil and go to "Verification of Vehicle Repair" procedure.

1.

Start engine and let vehicle idle

2.

Connect scantool and select "Current Data" mode

3.

Monitor "CKP T/WHEELS-LO CMP" ＆ "CKP T/WHEELS-HI CMP" parameters on the Scantool data list.

Specification :

"CKP T/WHEELS-LO CMP" : 38 +/- 4 tooth

4.

Are "CKP T/WHEELS-LO CMP" ＆ "CKP T/WHEELS-HI CMP" parameters within the specification?

YES

▶ Go to " Air Leakage Inspection " procedure.

NO

▶ Remove Crankshaft Position Sensor(CKPS) and calculate air gap between sensor and flywheel/torque converter. Readjust as necessary and go to next step.

note

1)

Air gap [0.3~1.7 mm [0.012~0.067 in] = measure distance from housing to teeth on flywheel/torque converter (measurement "A") and from mounting surface on sensor to sensor tip (measurement "B") subtract "B" from "A"

2)

If fail to synchronize CKPS with CMPS, check that the crankshaft and camshaft are correctly aligned the matching marks of the pulleys. Repair or readjust as necessary and go to "Verification of Vehicle Repair" procedure.

1.

Visually/physically inspect the air leakage in intake/exhaust system as following items,

If OK, go to next step

If NG, repair as necessary and go to "Verification of Vehicle Repair" procedure.

1)

Vacuum hoses for splits, kinks and improper connections.

2)

Throttle body gasket.

3)

Gasket between intake manifold and cylinder head.

4)

Seals between intake manifold and fuel injectors.

5)

Exhaust system between HO2S and Three way catalyst for air leakage.

2.

Was a problem found in any of the above areas?

YES

▶ Go to "Fuel System Inspection" procedure.

NO

▶ Repair air leakage and go to "Verification of Vehicle Repair" procedure.

3.

Check the fuel for excessive water, alcohol, or other contaminants. Replace contaminated fuel as necessary.

4.

Install a fuel pressure gauge.

5.

Start engine and let it idle. Inspect fuel pressure with vacuum hose disconnected.

Test Condition : Engine "ON" at Idle.

Specification : 330~350kPa(3.30~3.50 kg/㎠, 47~50 psi).

6.

Is fuel pressure within the specification?

YES

▶ Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

NO

▶ Repair as necessary refer to inspection noted as below and go to "Verification of Vehicle Repair" procedure.