Compression Test with a Scope [PicoScope, Autel MP408, Micsig, & Autel Ultra]

I was always taught you start with a general test to determine if that system is okay.

Using a Relative Compression Test (RC Test) one can see right off the bat if the promblem is mechanical. If the RC test passes then you know it has to be either Fuel or ignition related. No coil swapping, no injector swapping with this test.

Charge up your scope, replace the 9v on your amp clamp and follow along as I show you with the Pico 4425, Autel MP408, Micsig ATO 1104, Autel Ultra, How to Set it up and how to run the easy RC Test.

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[MasterAutomotiveTraining]

This video is meant to be educational. I cover multiple scopes like the title says, if you are looking for a quick fix, or want me to tell you swap these parts and you are done, find another channel, that won’t happen here. I teach how to do things right, NOT how to guess. This is a 20+ minute video that means it’s not a quick fix video, so don’t expect it to be quick.

[chulito]

Doing diagnostics for a long time, here is the best piece of advice learned about 20 yrs back. Always perform an audible relative compression prior to anything. Doesn't matter if its a misfire, feeling of imbalance, or even a tune up. My scope is always on a light rolling cart with the scanner ready to go. If I hear an imbalance, I already know my next path. Saves a ton of time and money from inspecting and checking components that are not the root cause.

[hammerhead]

Excellent demonstration, very clear, well done sir! Thank you.

[ThunderbirdRocket]

Super helpful ! Extraordinary detail !! I learned a few new things !!!! Thanks

[Rickie-x]

I'm really glad I seen this video before doing an RC test on my vehicle. Do you have any other videos that you used the MP408 scope?

[DJ-tnvj]

Appreciate the video. As you said. No excuses 😜

[EvangelistChibuezezebulon]

i have m408 having little issue setting up custom probe for rotkee PS16 Pressure transducer on custom probe setting

[EATSLEEPFARM]

Thank you for posting some ultra content. There’s not that much out at the moment. Great stuff man👍

[charleskeenom]

I love your help I am trying to learn the scope, thank you

[DJ-tnvj]

Thanks again bro for the various methods. Really appreciate it 🤣

[fegmihamedlafi]

Great video! Quick question master, do we need an attenuator to read the signal from the ecu ?

[kevincottman-dqxg]

Great video, Imma start using a scope soon

[yordanestevez]

master in the maxiscop it is necessary to use attenuators to see the primary circuit signals and injector signal I have doubts about this thanks in advance

[weshawkins]

Great instruction. I just got my AutepMP408 yesterday and I’ve been playing around with it. One question I have is when do you use the attenuators?

[MegaErick]

Master Automotive Training muy buen video yo compre el mp408, pero tengo una pregunta lo tenias en el canal A en 500a y luego cambio a 1ka?

[topsecret]

What’s the name of the tool to check the spark plug coils?

[mbazzy]

I bought the Autel Ultra, I am an advanced DIY'r and are really liking the integrated scope and signal generator. If you have time can you demo the usefulness of the signal generator feature?

[tonygovender]

Well in Africa we don't have fancy equipment like you. But we still fix bmw, audi etc. But I really think you a very good lecture. You people in the USA are very blessed with training and information. Thank for your videos

[estatesrecords]

Hi great and informative video, where can I get the new autel MP408 software with the degree rulers.

[fishonnelson]

Great training.. I have never setup the 720 degree markers.. I am guessing that we could see timing slip if our cylinders dont line up with the proper and expected degree lines?? correct? anyone?