Cheap Relative Compression Test not Hantek

Trying out the new 35 dollar FNIRSI-138 Pro oscilloscope on the 4runner doing a relative compression test. This was even cheaper if you order without the 1x and 10x probe. I've been playing with it and its a pretty neat little scope. Perfect for those little things you want to check and its even battery powered. Not trying to sell it, just thought it was a cool option for those not wanting to spend over a 100 on a Hantek or 1,000's on a Picoscope.

Yes its only 1 channel. but hey, its also only 35 bucks :-)

Please note: This video is for entertainment purposes only. I am not a professional mechanic and some things I may say are wrong. I am not responsible if you try to duplicate something I do and damage your property or injure yourself. Please do your own research on proper methods or hire a professional.

[peterdavey]

If only I had discovered you earlier, I have oscilloscope and made my own Pulse Sensor Diagnostics very simple. will now use your method. Thanks so much for valuable advise here

[andyhodgev.a.g]

I love video’s like this, ya not trying to be flashy and you got the result without over complicating it, great job nice one 😊

[rodvan-zeller]

Great video. Most cars after 1996 set a code for which cylinder is misfiring, this test shows or eliminates a compression issue.

[JohnSmith-xxlx]

Another way to identify the cylinder without 2 channels is pull a spark plug and write down which cylinder it is once you have the firing order you will know the rest.

[jscons]

Thank you for the scope lesson, I need more. Am
New to scope and am trying my best to learn how to operate and interpret it.. help with more video. Currently I have hantek2d72 as a beginner reading a lot of materials trying to understand them but it’s not easy 🤔

[BJohnson-yw]

I would like your recommendation for a inexpensive transistor mosfet capacitor, inductor tester

[yanivhag]

Cheers! Great little tool do you have a link where to buy it? and can you do more videos how to test more engine sensor elements with this little guy

[DanielWOstler]

In some versions the battery is not included. I suggest the battery included model.

[migm]

good info. can this check engine sensors?

[precisiont]

How can I find the link to that product?