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2008 - MX-5 - Engine

ENGINE TUNE-UP [LF]

Engine Tune-up Preparation

1. Verify the following:
2. Verify that no DTCs are available.
3. Warm up the engine (ECT is approx. 80 °C {176 °F} or more) as follows.
a. Start the engine.
b. Racing at the engine speed 2,500—3,000 rpm for 3 min.
4. Turn off the electrical loads.
5. Wait until the cooling fans stop.
6. Connect the SST (M-MDS) to the DLC‐2.

7. Verify that the idling speed (M-MDS: RPM PID) is within the specification using the M-MDS function.

Ignition Timing Inspection

NOTE:

1. Verify that the ignition timing (M-MDS: SPARKADV PID) is within the specification using M-MDS.
2. Verify that ignition timing advances when the engine speed increases gradually.

Idle Speed Inspection

NOTE:

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

Idle Mixture Inspection

1. Verify that the idle speed and ignition timing are within the specification. (See ENGINE TUNE-UP [LF].) (See ENGINE TUNE-UP [LF].)
2. Insert an exhaust gas analyzer to the tailpipe.
3. Verify that the CO and HC concentrations are within the regulation.


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