This will prevent the connectors from becoming loose. When removing the wire, do not pull on the wire, but instead grasp the plug boot firmly and gently remove. As the engine turns over, look if there is a spark on the test light. Have a helper turn on the ignition and try to start the engine. Keep your hands away from the ignition coil and the spark tester. Find the resistance specifications for your cars primary coil winding in your repair manual. To test a spark plug, take a multimeter and check: The resistance between the terminal and the tip of the center electrode The resistance between the. Loose terminals - Spark plug wires need to be removed carefully. Now it is time to check if your engine is getting a spark. Test the Primary Winding The primary winding of your ignition coil is the first to receive voltage from the battery, so well follow its lead and test the primary first.To prevent this, all Bosch spark plug wire sets are designed specifically for each application to ensure wires are out of harm’s way. Excessive heat from exhaust headers - Routing spark plug wires in areas with excessive heat can destroy the silicone insulation.This will cause permanent damage to the spark plug wires and possibly the spark plug as well.
#TESTING SPARK PLUG CODE#
#TESTING SPARK PLUG DOWNLOAD#
The next step is testing for spark directly on the ignition coil to determine if the spark plug wire is bad or if the ignition coil pack is bad. Method 1 Inspecting the Spark Plug Wires with the Engine Off Download Article 1 Look for physical damage to the wires or boots, such as cuts and scorch marks. For this test, use a simple analog or digital ohmmeter. IMPORTANT: This test step applies only if you got a no-spark result in TEST 1 on: 1) only one spark plug wire or 2) two different spark plug wires that DO NOT feed two ' paired cylinders'. With this test, youll check the condition of the conductor that runs through the thick insulation of your spark plug wires. TEST 2: Spark Test Directly On Coil Tower The next round of tests will help you troubleshoot this further, go to: TEST 2: Spark Test Directly On Coil Tower. This result indicates one of two things, either both ignition coil packs are bad or the spark plug wires are bad. The next round of tests will help you troubleshoot this further, go to: TEST 3: Ignition Coil Power Circuit Test.ĬASE 5: You got NO SPARK from two spark plug wires that feed 'non-paired cylinders'. This result indicates one of two things, either the ignition coil pack or the ignition control module (ICM) is bad.
The next round of tests will help you troubleshoot this further, go to: TEST 2: Spark Test Directly On Coil Tower.ĬASE 4: You got NO SPARK from two spark plug wires that feed 'paired cylinders'. This result indicates one of two things, either the spark plug wire is bad or the ignition coil is bad. Vehicle System: Ignition What Is a Spark Plug Test A spark plug is a simple device that turns the ignition system's energy into spark, which ignites the fuel mixture. We plug it into the end of the coil where the plug would normally. The next round of tests will help you troubleshoot them both, go to: TEST 5: Ignition Module's Triggering Signal.ĬASE 3: You got NO SPARK from only one spark plug wire. And we do that with a simple spark tester for less than ten bucks from the auto parts store. This result indicates one of two things, either the ignition control module (ICM) is bad or the crankshaft position sensor is bad. Go to: Other Causes Of Misfires.ĬASE 2: You got NO SPARK from any of the spark plug wires. This also confirms the ignition control module (ICM) and the crankshaft position (CKP) sensor are working correctly. Testing spark plug wires helps you diagnose common engine problems, such as: cylinder misfires, rough idle, loss of power, hard-to-start issues, and an increase in gas consumption. This test result indicates all of the ignition coil packs are good. Let's take a look at what your test results mean:ĬASE 1: You got spark from all spark plug wires. Repeat this spark test on the remaining spark plug wires.
0 kommentar(er)
