TEST 3: Testing For Spark At The Ignition Coil Pack (Cylinders 1 And 4)
This is the next test step if you got no spark on the two spark plug wires that feed cylinders #1 and #4 in TEST 1.
In this test step, your mission is to test for spark directly on the ignition coil pack towers that feed spark to the two spark plug wires that did not fire off spark in TEST 1.
You'll have to test one ignition coil tower at a time and after getting the spark from that one (or none), then you'll test the other one.
Let's get started:
- 1
Remove one of the spark plug wires that did not fire off spark from the ignition coil pack.
- 2
Place the spark tester directly on the ignition coil tower, in place of the spark plug wire you just removed (see photo above).
- 3
Connect the spark tester with a battery jump start cable to the battery negative (-) terminal.
- 4
Have your helper crank the engine. The engine may start, so be careful.
- 5
You're gonna' get one of two results: spark or no spark.
- 6
OK, now repeat tests 1 thru' 5 on the other ignition coil tower whose spark plug wire did not fire off spark.
Let's take a look at what your test results mean:
CASE 1: You got spark from only one tower. This result lets you know that the ignition coil is bad. Replace the ignition coil.
CASE 2: You got spark from both towers. This is the correct test result and it let's you know that the ignition coil is good and that the spark plug wires are bad. Replace all of the spark plug wires as a set.
CASE 3: You got NO spark from both towers. The next step is to test for the Switching signal. For this test go to: TEST 6: Switching Signal For Cylinders 1 And 4.
TEST 4: Testing For Spark At The Ignition Coil Pack (Cylinders 2 And 3)
This is the next test step if you got no spark on the two spark plug wires that feed cylinders #2 and #3 in TEST 1.
In this test step, you're gonna' test for spark directly on the ignition coil pack towers that feed spark to the two spark plug wires that did not fire off spark in TEST 1.
You'll have to test one ignition coil tower at a time and after getting the spark from that one (or none), then you'll test the other one.
Let's get started:
- 1
Remove one of the spark plug wires that did not fire off spark from the ignition coil pack.
- 2
Place the spark tester directly on the ignition coil tower, in place of the spark plug wire you just removed (see photo above).
- 3
Connect the spark tester with a battery jump start cable to the battery negative (-) terminal.
- 4
Have your helper crank the engine. The engine may start, so be careful.
- 5
You're gonna' get one of two results: spark or no spark.
- 6
OK, now repeat tests 1 thru' 5 on the other ignition coil tower whose spark plug wire did not fire off spark.
Let's take a look at what your test results mean:
CASE 1: You got spark from only one tower. This result lets you know that the ignition coil is bad. Replace the ignition coil.
CASE 2: You got spark from both towers. This is the correct test result and it let's you know that the ignition coil is good and that the spark plug wires are bad. Replace all of the spark plug wires as a set.
CASE 3: You got NO spark from both towers. The next step is to test for the Switching signal for cylinders #2 and #3. For this test go to: TEST 7: Switching Signal For Cylinders 2 And 3.
