Search and elimination of malfunctions of fuel system. KIA Magentis/Optima (since 2000 of release)
Magentis and Optima repair since 2000 of release
1. Engines
2. Greasing system
3. Cooling system
4. Control and decrease in toxicity
5. Fuel system
6. Ignition system
6.1. Specifications
6.2. General information
6.3. Coil of ignition of the engine of 2,5 l of V6
6.4. Coil of ignition of the engine of 2,0 l
6.5. Ignition lock
6.6. Spark plugs
6.7. High-voltage wires
6.8. Installation of high-voltage wires (V6 engine)
6.9. Check of spark plugs
6.10. Search and elimination of malfunctions of fuel system
7. Coupling
8. Transmission
9. Power shafts, axes
10. Suspension bracket
11. Steering
12. Brake system
13. Body
14. Central air
15. Electric equipment
16. Electric circuits
 










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6.10. Search and elimination of malfunctions of fuel system

Probable causes

Elimination method
The engine is not started up or started up hardly
  1. The ignition switch is faulty
  2. The ignition coil is faulty
  3. The capacity switchboard is faulty
  4. Spark plugs are faulty
  5. Wires of system of ignition are damaged
  1. Replace the ignition switch
  2. Replace the ignition coil
  3. Replace the capacity switchboard
  4. Replace spark plugs
  5. Check and, if necessary, replace wires
Non-uniform idling up to an engine stop
  1. Wires of system of ignition are damaged
  2. The ignition coil is faulty
  3. High-voltage wires are faulty
  1. Check and, if necessary, replace wires
  2. Replace the ignition coil
  3. Replace high-voltage wires
Fluctuations of frequency of rotation / weak acceleration
  1. Spark plugs are faulty
  2. Wires of system of ignition are damaged
  1. Replace spark plugs
  2. Check and, if necessary, replace wires
High fuel consumption
  1. Spark plugs are faulty
  1. Replace spark plugs

«on a step back
6.9. Check of spark plugs
on the following page»
7. Coupling