PRODUCT INFORMATION
INDEX
DATE
Dep. 2
IO-G-M-33-003e B
May 2016
CHECK OF IGNITION COILS AND SPARK PLUG WIRES
2/2
Fig. 2 - Measuring the resistance of the secondary winding of an ignition coil ref.
3. SPARK PLUG WIRES
The high voltage or spark plug wire conveys the high-voltage impulse produced by the coil to the spark plug.
The spark plug generates the spark between its electrodes. For proper operation, the contacts between the
high-voltage wire from the coil and the high-voltage wire to the spark plug must be perfect.
During the inspection according to the maintenance guidelines, check the following before fitting new wires into
the engine:
-
The condition of the connection between the high voltage wire and the coil, removing sulphated
compounds if any.
-
The tightening torque of the coil fixing screws in the event of a screwed coupling.
-
The resistance of the high voltage wire is 5k
; therefore, it must be in the range of 4 to 6k
.
Otherwise, change the wire for a new one.
Fig. 3 - Measuring the resistance of a spark plug wire ref.
5.2.34
O&M_2.002211.810_A_10_2016
