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Technical In need of a KV spark Plug Voltage tester

Discussion in 'The Hokey Ass Message Board' started by Nick Abrams, Sep 21, 2017.

  1. Nick Abrams
    Joined: Sep 21, 2017
    Posts: 5

    Nick Abrams

    Hey guys,
    I am looking for a spark plug voltage tester with an lcd display that will give me a reading for my KV through my spark plug wire. My local mechanic showed me his and it was amazing. I could easily locate a failed plug wire from the rest. I looked on the internet to buy one and I can't find any for sale. This is really strange. I've attached one that is similar to the one I want. Again I can't even buy one. No one is selling them. If any of you guys have one to spare I really want to buy it. These tools seem to be hard to find for some reason.
    out of stock

    Nick Abrams Mac tools spark plug voltage tester..jpg
  2. Budget36
    Joined: Nov 29, 2014
    Posts: 13,215


    OTC and Actron used to make them, but I searched and couldn't find any info
  3. BJR
    Joined: Mar 11, 2005
    Posts: 9,876


    I find it shocking that no one sells them any more.
  4. 1-SHOT
    Joined: Sep 23, 2014
    Posts: 2,697

    from Denton

    It's all done with computers today

  5. FityFive
    Joined: Aug 9, 2010
    Posts: 340


    Does a vintage sun machine have spark plug wire voltage capability?
    Alonzo "Lon" Wilson likes this.
  6. a google search shows that the Mac ET3141 was made by OTC. OTC is now owned by Bosch. i will call my contact there on Monday to see if one is still available. i work part time at an auto parts store around the corner from them

    now i want one too!
    Last edited: Sep 22, 2017
    Truck64 likes this.
  7. Rocket Scientist Chris
    Joined: Mar 3, 2001
    Posts: 602

    Rocket Scientist Chris

    Do a search on EBay for "spark analyzer". There are some new and used analyzers that will read kilovolts. :)
  8. Truck64
    Joined: Oct 18, 2015
    Posts: 5,325

    from Ioway


    Wish they could leave this stuff alone.
  9. woodbutcher
    Joined: Apr 25, 2012
    Posts: 3,310


    :D Might also try the Fluke brand.
    Good luck.Have fun.Be safe.
  10. Be a MAN - Wire in one hand , cold brew in the other.

    You will get hair raising results.

  11. Nick Abrams
    Joined: Sep 21, 2017
    Posts: 5

    Nick Abrams

    Thanks for all the replies.
    Budget36, Thanks for trying I'll keep you posted.
    BJR, I know right! I hope this isn't a trend. Parts and tools drying up. It really is a great tool.
    1-shot, and that's why cars of today will be terrible old cars.
    FiftyFive, Sun Machine? I'll look into that. Old tools are great!
    36-3window, Wow I got lucky. That is great info. Thanks for doing that. Please let us know what your friend thinks. A normal KV reading should be 9 to 13 KV. Although its strange, the tool will always read a higher kv the closer the clamp is to the distributor. So when testing the spark plug wires you should clamp the tool in the same general area. When I used it on my MG, I found 3 wires were showing a similar reading. Around 11 kv. The final wire was showing 3 KV. I swapped wires and it still showed the same reading 3 KV. My spark plug was dead. I mention this because my original post made is sound like the wire was the culprit. I think it is still a useful tool to check spark. What I thought was a vacuum leak or bad carburetors was a simple spark plug.
    Chris, Spark analyzer. That's what I'm looking for. I'll look into it.
    Truck 64, Is that an old tool converted into a lamp?! So that's where they all went huh.
    woodbutcher, Good info. I'll let you know what i find.
    Oldmics, Haha you only play that game once.

    Thank again for all the feedback.
  12. Mike VV
    Joined: Sep 28, 2010
    Posts: 3,037

    Mike VV
    from SoCal

    By the time you've researched this, found a tester, bought it, tested all your wires, you could have saved a ton of time (= money !), you could have bought three or four sets of new plug wires..!

    X38 likes this.
  13. Budget36
    Joined: Nov 29, 2014
    Posts: 13,215


    Naw...they were good tools, borrowed one once for an OT car...found a spot in the wire that I got high KV...i/e 15-16KV...bad wire...current the same...larger resistance (from bad wire) mean a bigger voltage jump.

    Ohm meter would never tell you that, would have to spend the dollars on a Megger, wasn't practical then, might not be now, dunno.

    Thing is, it's nice to have a tool to find the one bad thing in a system, than toss parts at the whole thing to fix it. May not use the tool daily, but nice to have it when you need it.
  14. Nick Abrams
    Joined: Sep 21, 2017
    Posts: 5

    Nick Abrams

    thanks for the backup Budget36. We have all have a drawer in our toolbox that is just for specialty tools. Some that I only find a use for once a year. But there what make jobs easy.
  15. Slick Willy
    Joined: Aug 3, 2008
    Posts: 3,053

    Slick Willy

    Vintage gasoline tester.... $673 or b.o.
  16. Mule Farmer
    Joined: Jun 1, 2005
    Posts: 1,508

    Mule Farmer
    from Holland MI

    My dad just bought a Mercedes sl500. Runs ruff sometime, it runs fine. Plug wires for that are 280 bucks and that's a cheap set. Sure would like to test them before coughing up 280 bucks.

    Sent from my SM-G920V using The H.A.M.B. mobile app
  17. follow up......I checked today with OTC/Bosch and they are discontinued. I was told there is absolutely none available from them
    Truck64 likes this.
  18. Nick Abrams
    Joined: Sep 21, 2017
    Posts: 5

    Nick Abrams

    Thanks for the follow up.
  19. Budget36
    Joined: Nov 29, 2014
    Posts: 13,215


    I recall about 15 years or so, the one my neighbor lent me, was about 120$$, I wanted one, but just kept thinking they'd get cheaper, bummer, should have got one then.

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