Operation CHARM: Car repair manuals for everyone.

Testing for Spark at Coil

Warning: The direct ignition system generates approximately 40,000 volts. personal injury could result from contact with this system.

Warning: Apply parking brake and/or block the wheels before performing any test with the engine running.

Caution: Spark plug cables may be damaged if this test is performed with more than 1/4 inch clearance between the cable and engine ground.

Spark Check Procedure:






Note: The coil pack contains 3 independent coils. Each coil must be checked individually.

1. Remove the cable from number 2 spark plug. insert a clean spark plug into the spark plug boot, and ground plug to the engine .

2. Crank the engine and look for spark across the electrodes of the spark plug. Repeat the above test for the five remaining cylinders.

^ If there is no spark during all cylinder tests, proceed to the FAILURE TO START test.

^ If one or more tests indicate irregular, weak, or no spark, proceed to CHECK COIL TEST.