Engine Hesitation w/ Shock Shift on Low Speed

Model: Hyundai Centennial(LZ)	Year Model: 2006	Mileage: 112200km
Displacement: 3500cc	Fuel: Gasoline	T/A: Auto

Subject: Engine Hesitation – Ignition Coil

1) Trouble Condition:

1. Engine Hesitation w/ Shock Shift on Low Speed.

2) Trouble Cause:

1. Number 1 Ignition Coil Spark leaking Due to Cracked.

3) Trouble Diagnosis:

1. Scan tool Check = No trouble found.
2. Inspect the engine condition with spark plug cable and coil removed one by one.
   (In engine starting condition).
   = Engine does not change when # 2 Cylinder is removed.
3. Inspect wave form using Scan tool.
   = Abnormal wave form in # 2 cylinder.
4. Check the spark plug cable and ignition coil.
   = Abnormal Condition # 1 coil cracked and the spark indicated that Spark is leaking.
   = After replacing the ignition coil, the engine operates normaly.

4) Trouble Repair Guide:

• Replace the Defective Ignition coil.