Are you talking about one of these? https://www.ebay.com/itm/Actron-CP7504- ... Swht1fuqlZgltriker wrote: ↑Tue Nov 24, 2020 10:52 am Another thing just came to mind about ignition system breaking down.
Get a timing light with an inductive pickup clamp. Install the clamp onto one of the spark plug wires. Start with #1 cylinder.
With the engine running , aim the light at a dark surface and watch for a sudden intermittent interruption or total loss of spark.
If nothing out of the ordinary shows up on #1 cylinder, move the inductive clamp to the #3 cylinder spark plug wire and watch for an ignition breakdown fault at that position.
Also I've never removed the spark plug wires from the boots. Can you tell me where exactly I would place the positive clamp? I guess with the boots off it would be what comes into contact with the plug itself?