Checking for ignition spark using a spark tester

[@zell863]

Finally someone said what numbers mean and to what should tester be adjusted.

[@macknumber9]

This is probably the best and quickest way to test if a coil needs to be replaced. Checking for resistance in the windings does test the coil and is a good test but it is not preferred because a coil can pass the test and still be weak under load. The coil needs to be tested under load not if it works or doesn't work. If it can produce a strong healthy spark or if it can't. It is that simple. These testers are great. I wish they made them inline so you can actually run the engine without dumping fuel in the cylinder and putting your catalytic converter at temporary risk. I know it would take a lot to burn up a cat but it would be nice to not have to worry about dumping fuel at all down into the system.

[@ACommenterOnYouTube]

Just make an adaptor from that tester and down to the plug so it will test under load ...

[@jeremyarnold2968]

Pull the pump relay?

[@arnoldramos39]

Thanks for the video 👍👍

[@elvismanrocks]

NICE VIDEO!

[@trkonkal]

Thanks!

[@davidm3210]

Right on!

[@moramoy1]

Thank you for video

[@worldcollections2839]

and if it does not flash : what is the problem would be ? the spark plug cable or the spark plug itself ??? i mean how to know if the problem is the cable or the spark plug ?

[@JustinMillerAutomotive]

It could be anything in the primary or secondary ignition circuit except the spark plug. This means that it could be the wire, the ignition coil, the ignition module, the camshaft or crankshaft sensor, etc.

[@worldcollections2839]

@@JustinMillerAutomotive this is the reasonable answer I have been told yet . thank you Sir

[@shoelessb4515]

Where did you get the adjustable tester???

[@ksk5517]

www.amazon.com/Deal%E3%80%91OriGlam-Adjustable-Ignition-Circuit-Diagnostic/dp/B06X9RC3PF/ref=sr_1_5?dchild=1&keywords=adjustable+spark+ignition+tester&qid=1624862348&sr=8-5

[@stevemurphy3242]

So what was bad? The plug wire?

[@JuanRivera-ff6fd]

steve murphy looks like the ignition coil was bad

[@nicholas8479]

Did this car have only one ignition coil? If so, what does this mean if one cylinder doesn't fire...coil good, but one plug wire bad?

[@osos231]

If it's COP, then most likely it's a bad COP. If it's individual spark plugs with distributor then it could either be a bad plug or wire.

[@angeliquemarquis8731]

@@osos231 it's not COP, COP has a connector directly attached to each coil (on the engine head). this is probably a coil pack, you see the high tension wire running from each spark plug.

[@armandoverdugo]

Where can I order the tester?

[@toucan221]

they are now on ebay $8

[@vicpetrishak1077]

Lisle20700. Better unit easier to adjust spark gap .

[@ArunKumar-vf4nv]

Ignition coil tester .but not spark plug.

[@turbot6592]

Mine will jump to 20 kV but not 30 kV. No misfires

[@macknumber9]

That's a weak spark...replace it or check spark plug wires if you don't have a COP

[@rockysanchez9525]

What if you don't ground the other end??

[@angeliquemarquis8731]

it won't work.

[@tmistro5768]

what was bad coil or wire?

[@angeliquemarquis8731]

or the spark plug gap was too wide.

[@mrweisu]

Was waiting for the clamp to fail. Disappointed ☹️