2008 Hummer H3 Misfire Case Study (Part 6)

2008 Hummer H3 Misfire Case Study (Part 6)

In this video I cover details that were missed in the cylinder pressure and intake vacuum waveforms from earlier videos in this series. The Picoscope really shows its abilities in this final…

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sivaraj palanisamy says:

Paul awesome. To be honest with you I don’t think i aligned with you on
previous part, what I thought is what explained in this video. Great man
you are proving me that u don’t just read theory but would like to
expirement theory and make it practical with evidence. I can bet you will
go ways up in ur field. Thank you very much and I like to donate ur
account. Can u pls message ur account to donate. I feel guilty to watch all
ur hardworking without a penny to spare.

ScannerDanner says:

This one is worth the watch. I think it wraps up nicely where we are in
this series. If you want to learn more about the Picoscope and testing for
engine mechanical problems using a scope, then this video is for you. I
hope you enjoy it.

Kris Ankers says:

Cheers for the video Paul. I’m pretty sure you can see the leak on the
exhaust stroke as well keeping the pressure high. If you use the pressure
waveform to give yourself a rough idea were the piston is in the cylinder
as a graph it would help to visualize the valve opening time. If I get time
ill get a screen grab of your video and post an example. If you remember
back I pointed out the pocket on the verus but the detail on that scope
didn’t really give me confidence.

Shawn Lockard says:

I bought a Pico, You sold me on it. Thank you for all your help.

Jesus Malagon says:

thanks Danner

John Fountain says:

Thank you for all you contributions on here
Just one consideration having done experiments with my pico and in cylinder
pressure transducers over the last year or so when you add the in cylinder
transducer the volume of the hose from the spark plug hole to the
transducer lowers the compression ratio slightly so one often see a lower
current draw on the cylinder with the transducer ..John 

Corky C says:

Paul, This is really a great tutorial. I enjoyed every minute of the
discussion and can’t wait for more. I wasn’t a fan of scopes, but this is
an amazing display of what they can do if you take the time to analyze what
you’re looking at. This is great stuff! I appreciate your time and
tenacity on this problem.
Gene

mastertje2 says:

Hehe, you really went to town on this Hummer. Now please take the head off
and show is the valve! ;)

Daniel Sauvageau says:

An even better way to “zoom” low-amplitude channels would be to simply to
use AC-coupling and set your channel to a higher sensitivity range like
500mV/div instead of 5V/div. This should give you even better vertical
resolution too and eliminate the need to bring the waveform back to the
middle of the screen all the time since the ~5V offset is eliminated by
AC-coupling.

bleachinuri says:

Thank you mr.danner it’s good to see someone like you sharing you knowledge
I know I am learning something. If you don’t learn something new everyday
then you didn’t have a good day

estrelladelnorte1308 says:

i will be waiting for the V configuration engine one with the single CAT
restriction, it should be very intersting to.Or maybe stick a banana on the
exhaust so we can get it faster,haha!

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