ENGINE TUNE-UP [L8, LF, L3]
ENGINE TUNE-UP [L8, LF, L3]
id0110a1800600
Engine Tune-up Preparation
1. Turn off the electrical loads.
2. Warm up the engine as follows.
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(1) Start the engine.
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(2) Maintain the engine speed approx. 3,000 rpm until the cooling fans start to operate.
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(3) Release the accelerator pedal.
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(4) Wait until the cooling fans stop.
3. Connect the SST (WDS or equivalent) to the DLC-2.
Ignition Timing Inspection
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Note
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• Ignition timing is not adjustable.
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• Ignition timing verification requires WDS or equivalent.
1. Verify that the ignition timing (WDS: SPARKADV PID) is within the specification using WDS or equivalent.
Ignition timing
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Approx. BTDC 8°
2. Verify that ignition timing advances when the engine speed increases gradually.
Idle Speed Inspection
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Note
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• Idle speed is not adjustable.
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• Idle speed verification requires WDS or equivalent.
1. Verify that the idle speed (WDS: RPM PID) is within the specification using WDS or equivalent.
Idle speed [L8]
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No load:650-750 rpm
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Electrical loads*2 ON:650-750 rpm
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P/S ON:700-800 rpm
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A/C ON and refrigerant pressure switch (middle) OFF:700-800 rpm
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A/C ON and refrigerant pressure switch (middle) ON:700-800 rpm
Idle speed [LF]
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No load:600-700 rpm
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Electrical loads*2 ON:650-750 rpm
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P/S ON:650-750 rpm
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A/C ON and refrigerant pressure switch (middle) OFF:700-800 rpm
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A/C ON and refrigerant pressure switch (middle) ON:700-800 rpm
Idle speed [L3 (2WD)]
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No load:600-700 rpm
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Electrical loads*2 ON:650-750 rpm
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P/S ON:650-750 rpm
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A/C ON and refrigerant pressure switch (middle) OFF:700-800 rpm
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A/C ON and refrigerant pressure switch (middle) ON:700-800 rpm
Idle speed [L3 (4WD)]
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No load:650-750 rpm
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Electrical loads*2 ON:650-750 rpm
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P/S ON:650-750 rpm
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A/C ON and refrigerant pressure switch (middle) OFF:650-750 rpm
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A/C ON and refrigerant pressure switch (middle) ON:700-800 rpm
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*2 :
Blower motor is operating at high speed. Headlight switch is turned on. Rear window defroster switch is turned on. Cooling fans are operating.
Idle Mixture Inspection
1. Verify that the idle speed and ignition timing are within the specification. (See Idle Speed Inspection.) (See Ignition Timing Inspection.)
2. Insert an exhaust gas analyzer to the tailpipe.
3. Verify that the CO and HC concentrations are within the regulation.
Idle mixture
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HC concentration: Within the regulation
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CO concentration: Within the regulation
