Compression tests - Conventional vs. Labscope

Brian Diagnostician Willoughby, Ohio Posted   Latest   Edited  

Brandon Steckler compares two tests in this recording.

One being the conventional method of compression testing vs. a more modern version called relative compression testing. When beginning your diagnostic approach on any diagnostic routine, it is always best to develop a route to travel early in the game.

One early step in that approach when diagnosing a misfire should include a relative compression test. This test is non-invasive, very quick and powerful​.​We want to know early on if we suspect there may be a mechanical failure or not before performing more invasive tests.

Thanks for watching!

youtube​.​com/watch?v=AsJQls…

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Steve Owner/Technician
Northwich, United Kingdom
Steve
 

Some very big names in that video, a great example of non intrusive testing. Here's an engine with a fault using the same test. youtu​.​be/_e-fJHEyPxA

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

I LOVE this guy!😊

+1 Ð Bounty Awarded
Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

I really hope to meet you, Steve...”CHEERS”!

+1 Ð Bounty Awarded
Steve Owner/Technician
Northwich, United Kingdom
Steve
 

If you're ever in the UK we must meet up 👍 I'm hoping to come ride along with Keith DeFazio in the spring. Working with him on completely unfamiliar vehicles will be a true test of my fundamentals 😮

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Scott Owner/Technician
Claremont, California
Scott
 

That ride along sounds interesting, might need to bring a camera or two to document this adventure! Do you have a date set?

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Steve Owner/Technician
Northwich, United Kingdom
Steve
 

It looks like end of march, hopefully to coincide with TST. I can't think of a better way to stress test my knowledge, I'm used to being under pressure but imagine working under Keith on completely alien craft. Awesome.

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

Count me “IN” STEVE! I’ll be there, if you’re serious....camera in hand!!😬

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Steve Owner/Technician
Northwich, United Kingdom
Steve
 

I've committed to it, the hype train is rolling 🚂🚂🚂

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

I assure you, you WILL learn from Keith DeFazio, a true craftsman!

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Josh Technician
Lynchburg, Virginia
Josh
 

Very well explain process. Thanks for taking the time to make and share the video.

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

Thank you, Josh

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Jim Mobile Technician
Southampton, Pennsylvania
Jim
 

What a GREAT way to start off the New Year with. Brandon’s video can be a real time saver when trying to find the area of the driveability problem. As I’ve said in many of my presentations, most driveabilty problems will fall into one of three Funnels: Fuel Delivery, Ignition related or Engine Integrity. Finding the correct funnel is done by what I call General Test (G’s), then when you have

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Jim Mobile Technician
Southampton, Pennsylvania
Jim
 

BTW - I ALWAYS wanted to meet those 2 techs in the ASE questions, you know Tech A and Tech B, that all they ever do is stand around and DISCUSS things??? I think I saw them in that video in the background Discussing some of the questions on the ASE exams.....LMAO

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

EXCLLENT POINTS, Jim! Thanks for including that. I would love to have included those points in the video as well. Would certainly enhance the demonstration!👍

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Jim Mobile Technician
Southampton, Pennsylvania
Jim
 

You Did an AWESOME job on that Video, and even introduced us all to Tech A and Tech B in the background.

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

😆thank you

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Jeffry Educator
Québec, Quebec
Jeffry
 

Hi Brandon, The mirror of your face in the screen of the scope near the end is brill. Nice touch. J

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

Thanks Jeff, courtesy of my good-buddy, Chris Martino...he has some cool camera skills

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Keith Diagnostician
Collinsville, Oklahoma
Keith
 

Another tip I like to employ that is equally as valuable as AC coupling, is to invert the scope leads on the battery, this will allow it to appear like a conventional RC test with an amp clamp. Great video Brandon! Glad to have you on the TBT team!

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

Keith, Thank you, You bring about another great technique!

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Cliff Diagnostician
Santa Maria, California
Cliff
 

Great explanation for those who aren't doing this testing method. I know Brandon isn't very tall and he is a bit younger than me, but watching him use such short extensions just sent pain down my back...I like to not lean over when doing plugs if I can get away with it. Keep up the great work my friend.

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Brandon Diagnostician
Reading , Pennsylvania
Brandon
 

😆thanks Cliff

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