Engine Tune-Up; Ignition Timing Inspection; Idle Speed Inspection - Mazda 2002 6 Workshop Manual

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IGNITION TIMING INSPECTION

Note
• Ignition timing is not adjustable.
• Ignition timing verification requires WDS or equivalent.
1. Turn off the electrical loads.
2. Warm up the engine as follows.
(1) Start the engine.
(2) Maintain the engine speed at approx. 3,000 rpm until the cooling fans start to operate.
(3) Release the accelerator pedal.
(4) Wait until the cooling fans stop.
3. Verify that the ignition timing (WDS: SPARKADV PID) is within the specification using WDS or equivalent.
Ignition timing
Approx. BTDC 10 degree
4. Verify that ingestion timing advances when the engine speed increases gradually.
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IDLE SPEED INSPECTION

Note
• Ignition timing is not adjustable.
• Ignition timing verification requires WDS or equivalent.
1. Turn off the electrical loads.
2. Warm up the engine as follows.
(1) Start the engine.
(2) Maintain the engine speed at approx. 3,000 rpm until the cooling fans start to operate.
(3) Release the accelerator pedal.
(4) Wait until the cooling fans stop.
3. Verify that the idle speed (WDS: RPM PID) is within the specification using WDS or equivalent.
Idle speed (L8 engine model)
Condition
No load
2
Electrical loads* ON
P/S ON
A/C ON and refrigerant
pressure switch (middle) OFF
A/C ON and refrigerant
pressure switch (middle) ON
Idle speed (LF engine MTX model)
Condition
No load
2
Electrical loads* ON
P/S ON
A/C ON and refrigerant
pressure switch (middle) OFF
A/C ON and refrigerant
pressure switch (middle) ON
F–8

ENGINE TUNE-UP

ENGINE TUNE-UP
1
Engine speed (rpm)*
650—750
650—750
700—800
700—800
700—800
1
Engine speed (rpm)*
600—700
650—750
650—750
700—800
700—800
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A6E390802000W02