Compression Test WITHOUT a COMPRESSION GAUGE using Active Scan Tool: AUTEL Scanner MP808TS

I show how to do a compression test without a compression gauge using just an active scan tool; the Autel scanner, Autel MP808TS. This is demonstrated on Honda Accords 2013 – 2017 (9th gen Accord). If you are having symptoms of low compression and are looking for a compression test without special tools other than a scanner, or how to check engine compression with a scanner or how to check compression on your engine with a scanner, you will find this video helpful. No other tools are used; no oscilloscope, amp meter etc. To check cylinder compression with a scan tool, a competent scanner that supports active tests is necessary. A regular compression test requires the use of a good compression gauge as well as disabling fuel injectors, removal of spark plugs and ignition coils.
Testing engine compression with a scanner is quick and easy with scan tools such as the Autel MaxiPRO MP808, MP808TS, or other Autel bidirectional scanners. This test will work on recent Honda as well as other cars. You may need to verify if this works as demonstrated on your car.

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Timestamps:
0:00 - Intro
0:39 - Compression test and signs of low compression
1:02 - Symptoms of low compression
1: 29 - A note on coverage
1:48 - Doing compression test without a compression gauge
4:26 - Interpretation of results
5:26 - Resetting ECM/PCM

#autel #autelscanner #obd2scanner #scantool #carscanner #diymechanic

Credit:

[rajeshchetty]

This guy would make for an excellent lecturer for mechanic school, his explanations are always very comprehensive, filled with knowledge and easy to understand whilst in no way dumbing it down. Keep up with the videos, you do great work brother

[TAShannon]

Thank you so much sir! Fantastic video and very impressed with the capabilities of this scanner. Just ordered the MP808BT Pro. You did a great job on the video, the perfect amount of conciseness and perfect amount of information. Thanks from Houston Tx

[timk.]

You can probably thank MB Xentry for this technology I remember this feature in 07-08. As usual they are way ahead of most manufacturers in (over) engineering. Good Video. I had no idea Autel would do this. Wonder if it does just Japanese cars or ?

[henryserrano]

I do that method but sometimes with a charger connected to the battery, just to ensure the starter is receiving solid current, just in case battery not good and starter may start to rotate slower.

[ttamn]

This is definitely more of an advanced or refined way to do it but this is not a new thing when I was a young subaru tech at one of the training courses (back in the 90's) we were shown how to do a quick test with the oscilloscope and from what we could see there we knew 100% if we needed to do an actual compression test...and if you know anything about subaru engines any time you need to remove the spark plugs it's not real fun..not "hard" but you damn sure didnt want to do it and realize you didnt need to...was kinda cool to see the voltage drop test on the screen and right there you could see for example 3 voltage peaks that match and one that didnt ... less compression =less effort required of the starter=less amperage pulled from the battery ...
Anyway just though I I'd leave that here for those that didnt know about it or maybe havent stepped up to a newer or more advanced scan tool or whatever... scopes are really cheap these days lol

[sagiriliyasuadamu]

Good video, but this feature is only available from Accord 9th generation and is not available for all makes and models. However can work on older models of ford.

[fatimaahmex]

Hello, you have to disconnect all cables from the injectors or the device will do everything automatically

[davideyo]

Good evening sir
I changed my catalyst on 2014 Camry but my check engine light comes and goes off by itself
Please where are you located ?

[RaicoCaico]

Greetings, I just performed the service, they applied new brake fluid but the workshop did not have a scanner. Should I go to a workshop to have the scanner installed so that they can inspect the ABS module? Don't tell me that I will have to drain the brake fluid again, repeat the process and buy the brake fluid again? Or should I just check it with the scanner without having to drain the brake fluid again?



[redwillsdiychargedupvideo]

My goodness brother thank you for such valid information I have the auto maxi's elite I will be doing this test this week I have cylinder misfire 6 8 1 and 4, With highest counts on 6 & 8

[ChristopherGrant-ex]

Will the mk808bt pro do the cylinder contribution test like in the video?

[wildsnake]

How many vehicles does this test work on? And can you still preform it after your subscription has expired? Thank you!

[Khaled-ifxs]

Can all car's compression be tested by mp‌ 808ts ?
I have maxi ms906bt but compression can't be tested like this. Please tell me What scanner is best for compression test all car

[jamesmichael]

Does this check Fuel Pressure ? Out from the box you don't have to registered or used internet or online to used all of it scanning function ?

[cristalak]

I want to know if you have MS906ts /would it work in Africa /How different is ms906ts from MP808ts

[destronationtroll]

Hello, MP808TS works with old cars? Mean 20-pin BMW E46 ABS and other?

[mrvinmartian]

Would this work on a 2000 engine computer?

[BLUEELMO]

Hello. Does this function work on autel mk808z bt ?

[Lowdownblues]

With the Autel MP808ts ($950), which does just a little more than this one, after 1 year you need to spend $600 EVERY YEAR for updates. Not exactly a DIYer tool.

[MyScotty]

Mercedes turns the car over itself on this test.