Acura CL Integra NSX RL RSX TL TSX 2001-2006

Diagnosis & Testing

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Secondary Spark Test



  1. Remove a spark plug from the engine. Examine the spark plug for cracks in its insulation and replace if necessary.

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    Fig. Place the plugs in order on a piece of cardboard. This will aid you in determining the condition of the plugs and their corresponding cylinder

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  3. Connect the spark plug to its spark plug wire.
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  5. Ground the spark plug-s outer electrode to the engine (touch the spark plug-s metal body to the engine block or other piece of metal on the car).

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    Fig. A spark tester can save lots of time in determining an ignition system problem. This model allows you to adjust the gap that the spark has to jump



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    Fig. To test for spark at the plug, ground the body to a known good ground such as this ground strap bolt



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    Fig. The use of an anti-seize compound is advised for easy removal and installation of spark plugs

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  7. Crank the engine and look for spark across the electrodes of the spark plug.
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  9. If a strong blue spark exists across the plug electrode, the ignition system is functioning properly.
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  11. Repeat the test for the remaining cylinders. If one or more tests indicate irregular, weak or no spark, refer to the coil test.
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  13. If spark does not exist, remove the distributor cap and ensure that the rotor is turning when the engine is cranked.
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Spark Plug Cable Test




CAUTION
Before beginning this test, be sure to wear rubber gloves and rubber-soled shoes for safety.

  1. One at a time, disengage each spark plug wire with the engine idling to check whether the engine-s performance changes or not.
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  3. If the performance does not change, check the resistance of each spark plug and wire.

    Click image to see an enlarged view

    Fig. A spark plug wire tester, such as this one, can save much time in the diagnostic process

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