Testing spark plug wires and diagnosing bad spark plug wires. Learn how to test spark plug wires with a multimeter. If your car is stalling, idling poorly, hesitating, getting bad fuel economy, misfiring, or you have a check engine light, you should check your spark plug wires. This will also show you How To Fix P0300 random misfire codes in your car.
There are 3 main tests I go over
1. Water spray at night (look for sparks)
2. Visual inspection (cracks, burns, etc)
3. Using a multimeter (ohm meter resistance test)
How to gap a spark plug: https://www.youtube.com/watch?v=IuW3svdqKZM
How to replace spark plug wires: https://www.youtube.com/watch?v=vaRl2aWPAcU
BMW Spark Plug Replacement: https://www.youtube.com/watch?v=gF9Bo4DDkE4
Spark Plug Wire Looms out of Zip Ties: https://www.youtube.com/watch?v=xWO1Oes7oJw
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Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.

14 thoughts on “How to test spark plug wires”
  1. Avataaar/Circle Created with python_avatars Michael Nelson says:

    Why is the resistance of such a short wire so high? I’m curious about the construction of spark plug cables.

  2. Avataaar/Circle Created with python_avatars Roovie says:

    Chris I have a hyundai tucson 2004 model there is no misfire when engine is on but has no power when accelerating. I need your help

  3. Avataaar/Circle Created with python_avatars Whurner Heyns says:

    My new plug wires is shorting.or spark jumping what can cause this?

  4. Avataaar/Circle Created with python_avatars Dapper Drift says:

    Thank you. Appreciate this one.

  5. Avataaar/Circle Created with python_avatars Brakebandit says:

    mines 20 ouhms autozone

  6. Avataaar/Circle Created with python_avatars Trinidad says:

    i went through “how to hear” “how to test” and how to diagnose” on the fuel injectors back and forth lol

  7. Avataaar/Circle Created with python_avatars Long Live China says:

    Putting in new wires in the Hummer 2mrw

  8. Avataaar/Circle Created with python_avatars JD Marban says:

    Chris I have a 2v mustang like yours and I found oil in my spark plugs. Could you advise on what to do? Thanks

  9. Avataaar/Circle Created with python_avatars Paul says:

    My 8.2 mm measure 74 – 87.3. Is that reasonable?

  10. Avataaar/Circle Created with python_avatars Everything Videos says:

    I have a 1996 Ford Explorer I changed the wires but I hear no clicking noise when attaching them to the plug. I have a set of Duralast 4144.

  11. Avataaar/Circle Created with python_avatars THEDEN559 says:

    Someone told me to check my spark plugs and I didn't know how. Lol. But thank you. You got a sub from me.

  12. Avataaar/Circle Created with python_avatars SkuleLudman says:

    My mechanic by mistake clamped one of the spark plug wires and it dented a bit, after he was working on the car and i tested it, i noticed that the car works iradically when I tried to press the gas pedal, and my fuel economy decreased. Could it be that that small dent in the wire damaged it inside, and yea the wires were brand new before i gave the car to the mechanic. Thank u in advance, and your videos are so helpful!!!😊

  13. Avataaar/Circle Created with python_avatars Uzumaki Garage says:

    sparking under water mist was a cool new tip to me thanks Chris

  14. Avataaar/Circle Created with python_avatars Travis says:

    wtf??? make sure ur Still subbed… i know for sure i subbed a Long ass time ago but just wasnt when i looked down to click like

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