Identifying a misfire with pico

In this video I show how you can use a scope to log data do pinpoint exactly which cylinder is missing and then verify

[@eacherenkeka]

Another great diagnostic video! Men! every step that you take leads you closer and closer to the problem! You have to be 100% sure before talking with the customer! Great job!

[@DTEAuto]

Keka, thank you for watching

[@djosbun]

The scope was the perfect tool for this diagnostic but I feel that the other key piece to this diag was your patience, waiting for the hiccup to come to you. A+ work, as always, brother. 👍

[@bartscave]

Excellent Diag process!

[@DTEAuto]

👍👍👍

[@lucianlucian9911]

Very good diag, I become a fan of your channel...

[@DTEAuto]

Thank you so much I appreciate that! And thank you for watching

[@WissamAbbas]

awesome

[@DTEAuto]

Thank you

[@david619dc]

Nice thought process.

[@DTEAuto]

thanks David

[@david619dc]

By any chance you have the snap on adapter part number?? Are you using homemade pulse sensor or WPS 500 on tail pipe??

[@DTEAuto]

@@david619dc the part number is eems324psa , and homemade sensor

[@alexandrumardare828]

I don’t really understand Why the Pulse goes up on the misfiring cilinder. I would have expected a pulse drop

[@DTEAuto]

This sensor I used actually works backwards, vacuum travels upward on it, but with more normal sensors, yes it would be the same point that it would travel downwards. The more important thing is the timing of the event in order to identify the cylinder. Hope that helps clarify, thank you for watching

[@hybriddiyer6180]

Hi, if I don’t have access to the exhaust pulses, would they be another way to identify the mise fire. Thank you

[@DTEAuto]

If you are using a scope, you can capture a waveform of the crank sensor signal and use an ignition sync, then use the scope's ability to create a math channel and you can see the rpm dropouts on the signal and use the sync to identify the cylinder

[@hybriddiyer6180]

@@DTEAuto Thank you sir!