ETCG and ScannerDanner solve a missfire

[David Whipple]

Probably my favorite video! Both of you are truly credits to your profession. I thought it was interesting to see the contrast of the 2 types of approaches. His being what i would call an engineer’s approach and yours being more of a field approach. GREAT video Thanks!

Topic

[EricTheCarGuy]

I’m very glad you liked the video. It’s one of my favorites too. I really like working with Paul, he’s a very talented and knowledgeable technician.

[Jack Patteeuw]

Good video. Lot’s of theory, all though some may not have grasped it all in the limited time frame you had for the video.

For “shade tree” mechanics or some one without a scope, one way to further diagnose this problem is to swap injectors, say between cylinder #2 and #3. In this case, you would have likely seen the bad wire sooner.

I found it odd that your buddy installed the attenuators when he knew that the back EMF voltage was clamped at 60V. All inductive loads (coil) connected to anything electronic have some way of clamping that spike to protect the drive circuit. Still, maybe the attenuators should be left attached to the scope at all times.

Oh yeah. Only one “s” in misfire ! 😛

[Author]

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