So only 2v scale, what's that yellow trace hitting for voltage reading in the 2nd picture down? And sorry for all the questions, it's like I can't stop wanting to learn more, considering I hated highschool lol
Hey Noah, I may have asked already but do you know the resistance of pickup coil you used? I have a coil that might work, it's about 550 ohms. Or does it not matter, this coil I have has a ton of windings too, not sure if that changes anything.
Without your scope grounded at all? What about running the 2 scope leads to the coil, then an additional wire going to ground somewhere? So you would have 3 wires. Isn't that how most leads are set up?
al514 wrote: Without your scope grounded at all? What about running the 2 scope leads to the coil, then an additional wire going to ground somewhere? So you would have 3 wires. Isn't that how most leads are set up?
Many probes are set up that way, in case there's a secondary voltage leak and a spark hits the probe. With the third wire to ground, hopefully the secondary voltage will go to the vehicle and not your scope. :silly:
In my experience, most arcing happens in and around plug wires (rubbed through, open wire, moisture). Genuine COP's will rarely arc to the top of the ignition coil, where you'd have the probe laying for testing. They might arc around the coil tip to the plug tube, but it won't reach the probe, and you'll see that on the secondary trace.
My diy probe worked awesome bud, I could see the injectors and ign coils perfectly. Thanks for the advice, I saved a ton of money building my own tools.
al514 wrote: My diy probe worked awesome bud, I could see the injectors and ign coils perfectly. Thanks for the advice, I saved a ton of money building my own tools.
