Automotive Diagnostic Pulse Sensor for 6 dollars? 

Wow thinking outside the box for real with that injector rail test.

Nice capture. I have never seen intake runing capture so clean like this.

You, Sir, are amazing & a breath of fresh air. Thank you so much. I just found you. Much respect from Australia 🇦🇺 American Made 🇺🇸

Top notch tutorial as usual, Thanks a bunch

Brilliant idea !! My initial impression was lifter tap but that tool is really handy .Came for the sensor build and stayed for the humor , 🤣

Very good ! Thank you for the video !

Excellent demo of RESONANT VIBRATION 👍. Highly informative video overall.

This dude is a genius .

Great info. Thank.

Thank you so much for all you give to us in this video. I will try to use it on my Honda N22A2 diesel engine doing a new little tac noise on one cylinder when you ask for some power, if I find somewhere to plug this sensor ...

Very cool!

nice idea again. I think the length of the pipe will delay the signal but not just as any tube from the sensor to the source would. then it may also lower the pressure of the shock wave that gets to the sensor.

I'm glad you be madé itt out ov Polly Vinyl Chloride azz I wouldn't havé known where to gett this Alooooooomin-Numb stuff from ¡¡¡¡¡

so i guess the new dodge hemi tick we hear so often should be able to identify which lifter is making the noise

Nice captures. I use piezo disc with banana jack , cranking the waveform is decent enough but during idling the waveform is bit ugly, compared to yours you can still see the pulls. Question, does the length of the pipe has a factor on the waveform capture? Thanks

Fyi noise in Honda possible timing belt tensioner

@ 7:30 - LOL - That's funny after watching the previous video with the accelerometer. I dont own a hot glue gun, I always use epoxy or construction adhesive just because that's what I have on hand.

Your white tube is quite large to allow for a lot of air charge dampening. Your cranking test shows a lot of detail, the highest peak is an exhaust valve closing, If an exhaust valve closes late, it will mask the intake peak and you will know you have a clearance problem of some sort and with a detailed zoom and measurement of the peak, you can show it's later in time than expected at its very top peak, the second-highest peak is an intake valve closing from a different cylinder than its exhaust mate, need to know companion cylinders and also understand valve overlap for each type of engine. These colored overlays are not very accurate but are ok as a guide and different software companies do not talk to other companies so you need to learn the parameters of each, simply said, find one that offers more data analysis, the one for W10 is fine from a Google search. I can also see an intake valve opening on the very long upward ramp maybe 60% of the way down that long rising waveform section. Spark also occurs in this general location if you monitor spark as a sync point. The distance between the 2 top peaks can be measured and valve adjustments can be calculated. The exhaust peak should always be higher than the intake peak. Your lowest peaks are the vacuum pulls and should be some sort of peak, if the waveform is a bit leveled off in this valley, there is a lower vacuum in that cylinder. The greater the distance from the top peak to the lowest valley shows a better vacuum in that cylinder. Try to crank the engine longer and stay away from the beginning of the crank process to eliminate those lower vacuum pulses on the left side of your capture. Going downward on the falling edge about 50% of the way down of each wave is a small spike, notice that this is around the 0 volts range, this is where the sensor changes from pressure to vacuum in the manifold so the sensor shows this ATM (atmosphere pressure )range nicely as the pressure differential changes at this moment, does it actually show up or is there a problem with the intake valve not opening and not showing this transition. Showing some bad engines will of course help more with diagnosis as you gain experience. Overall as mentioned above, it would be best to have this type of peaks and valleys on a running engine also, that, of course, will take some experimenting to get a good design of your homemade tool or maybe a more expensive sensor with a faster reaction speed? The important part is to get used to your tool and learn more with each new job. Thanks so much for the video.

Great channel! I am an experienced tech but have no experience with pressure transducers. Could I hook my snap on scope up to this home made sensor?

@siuautomotive When you were using the sensor in the exhaust, how did you work out the ign trigger? Long cable from the engine compartment? Great video.

Very interesting!!! Do you know if there is an open source version of the picoscope?

Does this speaker have an isolation circuit?

How can I get a copy of the overlay? Cheers mike

its lyke a drs stetho-scopé lisuning to heart valvé regurgitation etc ¿¿¿¿

What is the part number for that sensor? Thanks

All Verry good butt where ja get the analysis software app I.e. device =$6 Analysis Soft-Ware $500