How to repair the engine cranking but not start.

How to repair the engine cranking but not start.

Model: Hyundai Azera (TG)

Year Model: 2009

Fuel: Gasoline

Displacement: 3300cc

Subject: Engine cranking but not starting.

1) Condition

1. Engine cranking but not starting.

2) Cause

1. Due to fuel pump O-ring misassembling to the right position.

3) Diagnosis

1. Scan tool check
   = No trouble found.
2. Actuation test throu GDS
   =Spark from ignition coil = OK
   = Fuel pump too low fuel pressure = Bad 
3. Check and pull out the fuel pump assembly.
   = The O-ring from the pump misassembling to the right position.

4) Parts Replace

1. Replace Oring.

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