HOW ? - BENCHTOP SPARKPLUG DOOHICKEY By gy6fandan (Read 397 times)

[gy6fandan]

Seen this type of device on the internet often.
But how to make one ?

Zaptester Electronic Spark Plug Tester

Saw a blog on DIY for one here but lacking in instructions:
How to build a bench top Spark Plug tester

I have a spare CDI & Ignion coil / cable. Wondering if they can be used to make one.

Anyone know how - or - know a link to full instructions on how to make one fairly cheap?

Would be great for proper / better plug gapping & side gapping checking.

[jct842]

Just get a model t spark coil. Except sparking like that will tell you almost nothing. If you had a spark plug that was in a jar with up to 200 lbs of air pressure that would. I have seen a plug fire well out in open but as you raise the air pressure the sparking quits, sooner for a bad plug, a good plug will fire at higher pressures.

warning: jars blow up from high air pressure.

[gy6fandan]

jct842 <----> You have any "instructions" on how to build the gizmo ? Because that's what I need.

[jct842]

Your on your own. A model t coil produces a continuous spark if thats what you want. As I said that is not going to tell you much about a spark plug. Every shop would have one and all the auto parts stores would sell then if they were of some value to diagnosing problems

[JR]

IMO the one in the video will not really tell you that much as far as gap settings, plugs have a range and it's not rocket science. Going to tell me with the naked eye that you can tell the difference in the spark by adjusting the small measurements that you do on a sparkplug? Don't think so. Most plugs for scooters are set in the 0.32 range, change it to say even 0.35 and you'll see the difference?

But man here is a cool video on how to make your own spark tester!