In-Cylinder pressure - Pico WPS vs less expensive sensors. Also can a cheap 150 scope do the trick!

In this video I compare the "flagship" Pico WPS 500x to a few much less expensive pressure transducers. The sensors used in this video are around $150 or less (June 2022). I demonstrate the pattern with each sensor on a 2016 Chevrolet Silverado with a 5.3L engine. Also, while I have the sensors hooked up, I compared the pattern from a high-quality 12-bit Pico 4423 to a much less expensive 8-bit Pico 2204a ($150) to see if you can perform in-cylinder pressure testing with a less expensive scope AND a less expensive pressure sensor.

[@chrisreynolds5694]

Great video and comparison, Sean! I thank you for introducing me to this platform.

[@frmanuel83]

Great video !! Thanks for sharing mate!

[@gerardocondoripariona1953]

im from peru...thanks...I am a student and an oscilloscope like picoscope is unattainable for me, with inflation in my country everything has become expensive.... I am going to do my best to make myself a pressure transducer with honeywell.... greetings and successes teacher..............saludos desde peru

[@timgroleau1612]

Love comparison videos.

[@joemifsud2770]

Excellent. Keep it up.

[@billl7551]

Pretty power box!! No hot glue 🙂. RE: I just watched your $20 vibration analyzer it was fantastic too.

[@DJ-tn7vj]

Thanks again for the break down. There is a Chinese version that works really well also. Similar to the WPS for about 300 bucks

[@secretsquirrel9722]

I love to see him test that one.

[@chandpriyankara]

JH APT-100

[@DJ-tn7vj]

@@secretsquirrel9722 ill probably do one myself. Check out @dj mobile auto on KZbin

[@HomemMagroide]

Hi, That was an interesting video in which different sensors and scopes are featured. However, I was wondering if you get hold of a sensor from ATS - Bernie Thompson- and compare its response and vertical resolution with Pico's WPS500.

[@HS-fw2ed]

Thank you very much for this informative demonstration. I have some of these sensors and they are all 1/8'' NPT but in the market, I can't find any of the adaptors that you use in this demonstration. Can you please help me with this?

[@johnhnetkovsky8917]

The higher compression pressure during snap throttle is from the ingestion of more air to the cylinder,it is not back pressure. With modern cylinder heads and intake manifolds flowing more air this is the result, more power.

[@akdenyer]

Hi Why is the waveform different in the initial test before starting. Like the valves are not opening?

[@jaguarsouzalive]

Exelente aula poderia falar. Pouco devagar difícil acompanhar a tradução! Por favor

[@calholli]

Ivan, at "Pine Hollow Auto Diagnostics" --- sells his own little kit. I forget what sensors he uses.

[@markjohnson8162]

I want to get into in cylinder testing which one would you recommend?😊

[@peugeotplanet7553]

Can you please compare the wps to rotkee p16?

[@Eddiegrant69]

BENXU-TECH make good sensors. Less stair stepping than my honeywell px3. $20 but there not absolute.

[@4YouWHOyou]

Hi my scope doesn't support rollers for in cylinder pressure, engine rotation. Is there any software that allow to overlay that pattern to my measurements?

[@jamesrossmotors]

I am just wondering if you use the same Pico sofrware for the 12 byte and 8 byte scopes. Great video. I have just purchased a cheap Rotkee sensor and look forward to seeing its performance

[@siuautomotive]

For the 8-bit scopes, you’ll need the non-automotive version of Pico. You can get it at picotech.com.

[@siuautomotive]

For the 8-bit scopes, you’ll need the non-automotive version of Pico. You can get it at picotech.com.

[@jamesrossmotors]

@@siuautomotive thanks

[@mandytuning]

Vtc Cam advance increase compression.

[@howlinhog]

Back when the vantage scope came out I bought all the pressure transducers and cables. Haven't used them in years since the Vantage died. not sure how to wire it. Do you have description of pin out for the connector

[@siuautomotive]

I’m not sure the pin out. I’m pretty sure those snapon sensors alter amperage, not voltage. They likely switch between 5-20mA, which is a common range. With the pico, you can still use that setup, but you have to feed it 5v through 250 ohms. Then you can measure the voltage drop across the resistor and make either a math channel or create a “custom probe”. That sounds like a good project for another video!

[@howlinhog]

@@siuautomotive That does sound like a great subject for another video. The SSI transducers you are using look identical to the ones I have, round three pin connector, shape of the body, everything. Do the SnapOn transducers you're talking about meet that same description? I've got a range of transducers that go from reading vacuum and low pressure on up to 5000 lbs. It'd be nice to make use of them.

[@zeusbaezagil4500]

Muy buen video pero yo fabriqué uno y no logré q funcionara ni diera lectura

[@zeusbaezagil4500]

Veo q tú lo fabricaste sería x el sensor de precion

[@solraccavalcante382]

Bom dia. Onde compro o sensor SSI P51-500-S-G-P

[@siuautomotive]

It not the same one, but it’ll work www.digikey.com/en/products/detail/amphenol-ssi-technologies/P51-500-A-B-I36-4-5OVP-000-000/1665820

[@BesprovolkiSvias]

For those who read my reply about Rotkee transducers: they are bad, they brake after 10 uses: the black "ground" wire burns and melts. I checked the resistance of wires, check connections, checked clamps for power supply, etc, and established that transducer itself creates super-high current when pressure is 50 psi. As soon as pressure drops to zero, the burning stops. I posted reviews on Google sites about it.

[@DAZ_SR]

How do you buy those in the US? Does the war affect the shipping? Thanks!

[@BesprovolkiSvias]

@@DAZ_SR I modify my comment (read my original comment which I modified).

[@KeithHiebert]

Any chance of a comparison of the JH APT 100 clone of the WPS 500 tranducer? It comes with the adapters, and case. I have one, but haven't used it yet. Seems reasonably well built. kzbin.info/www/bejne/eJPNcn6ie9N3eNE

[@siuautomotive]

Hmmm, I’ll have to look into that. It really looks like a clone of the wps. For less than $300, it looks like a great deal. I do hate the fact that those China companies are cloning other companies great products though

[@chekelley6861]

I have one and it works exactly like the WPS 500. I even use the built in settings in Pico Automotive

[@justinteller2184]

​@@chekelley6861 Your comment is the best, I was hoping for this answer. 🎉