2076890

1.

Remove suspect cylinder’s spark plug cable

2.

Visually/physically inspect the following items:

- Damage, cracks and flashover

3.

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

1)

Specification :

Spark plug cable(㏀)
No.1	No.2	No.3	No.4	No.5	No.6
4.39 ~ 6.59	2.28 ~ 3.43	3.49 ~ 5.24	1.9 ~ 2.86	3.25 ~ 4.87	1.3 ~ 1.95

note

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

4.

Is the displayed value within specified value?

YES

a.

Go to "Spark Plug Inspection " procedure

NO

a.

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

5.

Remove suspect cylinder’s spark plugs

6.

Visually/physically inspect the following items:

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

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

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

7.

Was a problem found in any of the above areas?

YES

a.

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

NO

a.

Go to "Fuel Injector Inspection" procedure

8.

Check the fuel injectors for clogging or any restrictions

1)

Test Condition : Ignition "OFF" & Engine "OFF"

2)

Specification : No clogging and restriction

9.

Is the fuel injector OK?

YES

a.

Visually/physically inspect the engine mechanical problem as below:

- Bent push rods

- Leaky or sticky valves or rings

- Excessive valve deposits

- Weak valve spring

- Leaking head gasket

b.

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

c.

If OK, go to "Ignition Coil Inspection" procedure

NO

a.

Replace as necessary and go to "Verification of Vehicle Repair" procedure

10.

Ignition "OFF" & Engine "OFF"

11.

Ignition coil connector : Disconnect

12.

Visually/physically inspect the following items:

- Damage, cracks and flashover

13.

Measure the primary coil resistance.

Measure the resistance between connector terminals 3 and 1 (the coils at the No. 2 and No. 5 cylinder sides) of the ignition coil(C07)

1)

Specification : Approx. 0.74 ± 0.07Ω at 20℃(68℉)

14.

Is resistance within specified value?

YES

a.

Go to "Timing Inspection" procedure

NO

a.

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

15.

Start engine and let vehicle idle

16.

Install scan tool and select "current Data" mode

17.

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

1)

Specification :

a.

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

b.

"CKP T/WHEELS-HI CMP" : 98 +/- 4 tooth

18.

Are "CMP FALL EDGE" & "CMP RISE EDGE" parameters within the specification?

YES

a.

Go to " Air Leakage Inspection " procedure

NO

a.

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

note

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

b.

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

19.

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

- Vacuum hoses for splits, kinks and improper connections.

- Throttle body gasket

- Gasket between intake manifold and cylinder head

- Seals between intake manifold and fuel injectors

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

20.

Was a problem found in any of the above areas?

YES

a.

Go to "Fuel System Inspection" procedure

NO

a.

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

21.

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

22.

Install a fuel pressure gauge

23.

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

1)

Test Condition : Ignition "ON" & Engine "ON" at Idle

2)

Specification : 320~340kPa(3.26~3.47 kg/㎠, 46~49 psi)

24.

Is fuel pressure within specified value?

YES

a.

Thoroughly check connectors for loose or poor connections, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure

NO

a.

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

note

1)

Check if fuel line pressure decreases when accelerating quickly

a.

If it does, check fuel pump maximum pressure. If pressure is OK, check fuel line and filter for clogging

2)

If fuel pressure is lower than specification : Check for fuel line pressure while pinching fuel return hose.

a.

If pressure quickly increases, check pressure regulator

b.

If pressure gradually increases, check for clogging between fuel pump and pressure regulator. If hose is not clogged, check fuel pump maximum pressure.

3)

If fuel pressure is higher than specification : Is fuel line clogged?

a.

If it is not, replace pressure regulator.

b.

If it is, replace it