Mazda 3 manuals

Mazda 3 Service Manual: Engine Tune Up [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / General / Engine Tune Up [Mzr 2.0, Mzr 2.5]

NOTE:

Engine Tune-up Preparation

1. Verify the following:

2. Warm up the engine to normal operating temperature.

a. Increase the engine speed to 2,500—3,000 rpm

until the cooling fan starts running.

b. When the cooling fan starts running, release the accelerator pedal and wait until the cooling fan stops running.

3. Turn off all electrical loads.

4. Connect the M-MDS to the DLC-2.


Idle Speed Inspection

NOTE:

1. Complete the engine tune-up preparation..

2. Verify that the idle speed (M-MDS: RPM) is within the specification..

Ignition Timing Inspection

NOTE:

1. Complete the engine tune-up preparation..

2. Verify the ignition timing (M-MDS: SPARKADV) using the PID/data monitor function of the M-MDS..

3. Verify that ignition timing advances when the engine speed increases gradually.

Idle Mixture Inspection

1. Verify that the idle speed and ignition timing are within the specification..

2. Insert an exhaust gas analyzer into the tailpipe.

3. Verify that the CO and HC concentrations are within regulation.

Idle-up Speed Control Inspection

NOTE:

1. Complete the engine tune-up preparation..

2. Verify that the engine speed (M-MDS: RPM) is within the specification when each load is applied. (The speed decrease just after the load is applied is not considered.).

Engine SST [Skyactiv G 2.0]
1: Mazda SST number 2: Global SST number Example 1:49 UN20 5072 2:205–072 Holder 1: – 2: 134-01049A Evaporative emission system teste ...

Engine Tune Up [Mzr 2.3 Disi Turbo]
NOTE: If the accelerator pedal is depressed continuously for a specified time, the engine speed may decrease to the idle speed. This is due to the fuel cut control operation, which preve ...

Other materials:

Security Setting (Type A)
If a passcode is set, the system cannot be activated unless the passcode is input. NOTE Do this function only when parked. It is too distracting to attempt while driving and you may make too many errors to be effective. Passcode setting Press the pick-up button or talk button with a sho ...

Pilot Bearing Inspection [A26 M R]
CAUTION: Secure the steering wheel using tape or a cable to prevent the steering shaft from rotating after disconnecting the steering shaft. If the steering wheel rotates after the steering shaft and the steering gear and linkage are disconnected, the internal parts of the clock spr ...

Intake Air Temperature (Iat) Sensor Inspection [Mzr 2.0, Mzr 2.5]
Resistance Inspection NOTE: Because the IAT sensor is integrated in the MAF sensor, replacing the IAT sensor includes replacement of the MAF/IAT sensor. 1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Disconnect the MAF/IAT sensor connector. 4. Mea ...

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