Fuel System WL-C Engine
Fuel Injectors
• The WL-C engine uses solenoid valve-type fuel injectors, which are directly controlled by
the PCM. The operation is similar to the Mazda3 (1.6 MZ-CD).
• The fuel injectors are mounted with brackets to the cylinder head.
• When a fuel injector has to be replaced the eight-digit injector correction factor must be
programmed into the PCM by means of M-MDS (refer to the chapter ‘Maintenance and
Repair’).
BT-50_01048
1 Return fuel flow (to fuel tank) 7 Valve control plunger
2 Fuel flow (from common rail) 8 Nozzle needle
3 Injector head 9 Valve ball
4 Injector classification code (A0 for the
WL-C engine)
10 Orifice plate
5 Injector correction factor 11 Solenoid valve coil
6 Fuel injector
NOTE: The injector sealing rings located in the lower camshaft bearing case have to be
replaced at each removal of the injectors.
01-30 Service Training BT-50
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