From the classroom to the Field

Mario Diagnostician Florida Posted   Latest   Edited  
Case Study
Driveability
2009 Chevrolet Suburban 1500 5.3L 4-spd (4L60-E)
P0306 — Cylinder 6 Misfire Detected

Manifested here, is a bit of what I've learned in Brandon Steckler's classroom. 

Hope you all enjoy, and thanks for watching!

youtu​.​be/HqWL8GXva4M

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Jim Mobile Technician
Pennsylvania
Jim Default
 

Nice write up and it looks like you have been paying attention to that Brandon guy, I'll have to start listening to him also.

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Mario Diagnostician
Florida
Mario Default
 

I hear he learned from the best! Thanks Jim!

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Brandon Diagnostician
Pennsylvania
Brandon Default
 

I’d be nowhere without his guidance 👍

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Mario Diagnostician
Florida
Mario Default
 

Gotta give credit where it's due. It's exactly why I mention your name! People need to know about these techniques!

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Brandon Diagnostician
Pennsylvania
Brandon Default
 

Much-appreciated, my friend

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Chris Diagnostician
Pennsylvania
Chris Default
 

Excellent case study Mario. A perfect example of applying training, techniques, and tooling to make a correct and efficient diagnosis. The level of confidence and documentation you can have in selling the job, with relatively minimal time investment, is one of so many strengths of this level of diagnostics. Will we be seeing training classes featuring Brandon & Mario anytime soon? 🤔

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Mario Diagnostician
Florida
Mario Default
 

Thanks Chris! Of course with each finding, the next step is justified, and client is updated each step of the way. If he would've declined at any point, there would've been no more work done than absolutely necessary. 😆 I've got much to learn, but I appreciate the compliment!

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Brandon Diagnostician
Pennsylvania
Brandon Default
 

Mario, thank you as it is very rewarding to see others apply the techniques to their benefit. I think a dual- class would be fun ( perhaps a “hands-on”/ video???

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Mario Diagnostician
Florida
Mario Default
 

I'd be honored to partake in that buddy! Thanks for taking the time Brandon 👍 let's set something up!

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Jim Mobile Technician
Pennsylvania
Jim Default
 

Can I be a Professional HECKLER in that class ?????

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Mario Diagnostician
Florida
Mario Default
 

😂 Absolutely!

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Brandon Diagnostician
Pennsylvania
Brandon Default
 

It would be an honor😆

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Brandon Diagnostician
Pennsylvania
Brandon Default
 

We’ll discuss it over dinner in a few weeks 👍

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Mario Diagnostician
Florida
Mario Default
 

👍

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Ray Diagnostician
Ontario
Ray Default
 

Mario, great presentation as usual! I was at an engine repair shop and a 2011 Sierra 5.3 had a misfire in cylinder 1. I removed the ign/inj fuses and CH A is the starter amps. The engine would crank for nearly 2 seconds before cylinder 1 lost compression. CH B is a FLS on the dipstick tube and when cylinder 1 loses compression, there is no excessive blow by gases in the crankcase from the…

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Mario Diagnostician
Florida
Mario Default
 

Love it! Cranking is always my preference. This is great example of what I most enjoy when using these techniques. Thanks for sharing Ray!

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Ray Diagnostician
Ontario
Ray Default
 

You're welcome Mario!

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Ray Diagnostician
Ontario
Ray Default
   

By the way, some COP boots will fit nicely between the FLS to the dipstick tubes. And some other COP boots will fit properly between the WPS500's fitting, to the dipstick tubes. Then you can accurately measure the pcv vacuum in the crankcase, in inches of water column.

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Mario Diagnostician
Florida
Mario Default
 

Awesome Ray thanks for the tip!

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Richard Owner/Technician
New Jersey
Richard Default
 

Nice job!!

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Mario Diagnostician
Florida
Mario Default
 

Thanks Richard!

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Bill Owner/Technician
Michigan
Bill Default
 

nice presentation Mario!! Almost as good as going to class :)

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Mario Diagnostician
Florida
Mario Default
 

Thanks for the kind words! Compared to the actual class though, these are crumbs lol can't possibly compare :D!

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Bill Technician
Saskatchewan
Bill Default
 

Good Job Mario. Did you ever go back to think about why that vacuum pull was so deep. My opinion was exactly what you had eluded to when you were thinking out loud. The engine sped up and pulled deeper vacuum on 5's intake pull. Instead of number 6 pushing under compression it was being sucked back up under vacuum and speeding the rotation.

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Mario Diagnostician
Florida
Mario Default
 

I did mention the engine rotation, but that was concerning the intake pulls that are directly beneath the low compression event. As for the intake pull for cylinder five, that is a result of the the way the differential sensor interprets the pressure changes. When the absent intake pull took place the intake stabilized, the sensor went into a "relaxed" state, followed by a a rapid change in…

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Bill Technician
Saskatchewan
Bill Default
 

Mario, it does make sense. Thank you.

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