Man this video is very very good. Learned a lot, especially the Pico part. I still can't believe how do shops "diagnose" (parts canon) cars without a scope. It's an imperative tool to have. Thanks Mike, this series is looking great, you teach actually how systems works.

Hey dude I watch a lot of videos on diagnostics and you are by far the best. Thanks

This is exactly how I would address this code. A lot of the time the car is already in the bay and there is not an hour "handed to you". You'll add a little to the repair once diagnosed or slap em with that hour or more if they pull it. Car comes in, time to get after it....quickly yet accurately.......my point is with the capabilities at hand, the option of disassembly will definitely come last. Now certain circumstances you may have to, i understand. But time is money and removing valve covers or whatever isnt the way and of course swaptronis is forbidden. Factory flow charts are totally ****ed. But anyway i do like where the video is going. The couple of Toyotas I've come across with a 0016 or 0012 have been mechanical. Awesome video Mike.

Really like the direction you're taking here Prof. Mike. Great presentation thus far. I had no idea your web site offers cylinder location and firing order diagrams. Have to check that out. Man I really need a scope upgrade.

Hi Mike i really enjoy these vids. I class myself as a novice on any scope work but i do enjoy learning about scope set up and testing. Looking forward to increasing my knowledge following you along. Many thanks Tam.

Love, love, love the diagrams, the visual on hooking up the scope and your web site to find a firing order. All great help. Then you plug in the paint program to help read the screen shot...genius.

absolutely SUPERB, Thanks for the effort in producing this video, i shall highly recommend it to all my friends in the auto trade. 🙂

I've watched his video at least a dozen times and I have to say my favorite part is Mike's reaction when he reads the instructions on what to do if the cam timing is out or not... Be timed the slow paws perfectly right before you said I can't tell you how much of a problem I have with that. Hilarious

Guys, listen... when doing a relative compression test, disable the fuel injector power supply if possible...If not, disable the fuel pump AND ignition coils.

Outstanding description of the relative compression test Mike! Very interesting info on your site, gotta use that more often. Thanks so much!

Mike ...Can we consider the relative compression test as an integrity test for the mechanical health of an engine? Say when buying a used car would it be a good idea to do a scope relative compression test to see if the engine is any good or not........What do you think? Thanks a lot again for your continuous superior quality classes.

By the way, the screenshot tool you used (Greenshot) can also put text on the image. You just need to select "Open in Greenshot" instead. No need for Paint. It can also draw boxes and lines as well.

I really apreciate the very detailed video, it has been halpfull for me. Thanks a lot.

Great vid on comp test and well explained but my 1st test would be vacuum guage check. Vac will be low if its out by 1 tooth.

Now I understand why that long time waiting at the car shop.✌😔 good job brother.

Since you have a pico, you could have used Pico Diagnostics software to do a relative compression test. Results are much clearer to read (in a bar chart) and all you need is to hook up test leads to the battery. And it still gives you an option to look at the waveform if you like.

this video is a keeper . Great job explaining

Great video series as always guys.

OH you're doing an awesome job here Mike ! And don't think I don't see you stirring up the comments 😉

I am putting your website in my computer at the shop immediately tomorrow morning!

In the real world I doubt there are many techs who would waste time on this test, me being one of them. Here’s the beauty of these types of fault codes: The computer tells you what the problem is and where to look! Of course there are preliminary checks you should do, but when you consider a 10+ year old car with god knows how many miles, and we all know how prone timing chains are to stretching over time regardless of maintenance, some of us might be a little more confident making a call without getting into a case study Now, you say you need to advise the customer on the correct repair the first time which is the right way to do it... but this scope test you did here still doesn’t tell you exactly what the issue is, (it also didn’t tell you anything that the fault code already didn’t) so in the end, what is it really worth? Even if you scoped your cam crank and compared to a known good, you’d still be unwise to tell the customer they need only a timing chain before tearing it down. See, there’s a right and a wrong way of selling work. If you say you need X amount of time just to check valve timing based on your findings, you’re doing it wrong. If you tell them based on mileage along with the fault code it looks like it needs a chain, but you need to tear it down to verify there’s nothing else wrong, your hands are clean if they ok it. You didn’t waste any time solely checking valve timing, and the “job” is being done at the same time as your inspection, because you sold it that way. And if you find additional problems once it’s apart, you already covered yourself when you advised the customer For the sake of teaching, there’s something to be learned from this video. Even If this is how you’d approach an issue like this in the shop, I guess there’s nothing wrong with that. The issue I have, is being told from all angles that I need to spend 8K on a scope setup, when more than probably 98% of the time not only does scope data not tell me exactly what the issue is, it doesn’t tell me anything that I don’t already know. As well, there are alternative testing methods (to be used with conventional tools) that can be applied based on available symptoms, other than using a scope

I watch video. Thanks wells tech. I read with obd2. I got one of bosch codeconnect. Reader. Really easy to read, navigate and nice hand unit. Very simple interface. I am untrained in vehicle ECU so i did quick read tests. No experience with resetting-programming or vehicle restart defaults. Wells tuning very cool video tutorials and computer program setup/usb desktop.

Great video! Liked the use of paint 🎨

Thank you Mike this gives me something good to watch. Love the Relative compression test on this

thanks Mike! great video and explanation.

Good Morning 🙏 🌄 ✨ Mike Becker Great tutorial thank you very much helpful video thanks 👍 From Nick Ayivor from London England UK 🇬🇧

You were right Mike. The Walmart yoga pants are much more slippery than the Kohls brand. I'm still sliding off the edge of my seat waiting for the next episode! haha Another great job with the video.

Mike could you back probe a coil from 1,3 or 5 with scope signal A, and do another relative compression test with you focus on the

See if you'd have done like the dealer you'd already be on your way to tearing it apart and if it's not bad well the customer will get cam sensors just b/c it's already apart and then put it together & if it doesn't fix it then we'll just have to do some more diagnosing by changing out the ECM without checking anything else b/c we all know if it's not the timing it has to be the ECM...I'd laugh but it happens all too often and luckily there are those of us that simply laugh at it and diagnose it just like you're doing. I guess they haven't heard of CMP/CKP scope waveforms but then you don't get to charge the customer for the teardown...it's crazy. Nice diagnosis so far Mike and the clincher is coming!

A very clear explanation.....you do ti very well

great video Mike excellent pico scope skills I didn't even know about paint I have a 200 -2000 pico clamp and just wondering if you set it on 0-200 amps would you of got more granularity on your initial signal either way you got there thank you mike

You said that you should see a compression difference between both banks if timing is off on one of the banks.. but what if the engine only has 1 bank? What steps would you have took then?

Great relative comp test explanation, is there an ep 3?

It is ridiculous and you are talking to my boss directly. He just pulled the front of an Infinity G37 and the timing cover just to check the timing.

nice job Mike as usual >>> today I got very about Relative Compression Test that Mr Paul Daner never mention it

On a negative controlled coil in the system you have pictured which side of the coil do you back probe, positive side or negative side. I’m not to familiar with scopes I got an older modis with a 4 channel scope and I’m trying to learn how to use it better. I’m sure I could figure it out if I need to but I thought I’d ask. I used it before on a coil ramp test and I used the positive lead on ground and the negative lead on the coil negative side. It worked but I didn’t know if was the best way

This video should sell 1,000 scopes. I have the Vantage Ultra and love it.

I have a good ear and usually just spin engine over. It's not a definitive test, but if you have a mechanical compression problem then you can hear something wrong. A broken valve spring can be intermittent too since the spring can hang on itself - seen that on a hemi. Spin engine and listen and you can here the compression loss on that cylinder. Timing is a little more complex to pin down, thanks! But don't forget that a clogged cat on 1 bank can fool you, but you should have misfires all on that bank maybe but sometimes it just shows P0300. Problems I've had are like those trucks someone swapped a Dodge 5.2 for a 5.9, problems are more difficult to nail down with mixed parts and old junk. People who do that should fix the truck themselves because the cost can get real expensive in a shop. Wrong parts, sensors, wrong injectors, and bent flexplate sensor ring or wrong flexplate with intermittent misfires and backfire! What a mess, not to mention the vibration because they have the wrong flexplate and/or torque converter! Scope won't help you much in these situations, and the shop bill is more than the truck is worth. Don't walk, run away from these type problems and don't get involved. I have a basic rule of thumb, if I have no clue after an hour diag, time to get help or move on. Have a Cobalt with P0300 right now that another tech diagnosed a timing chain, but the air temp says -40F hum... this IAT looks like a Map sensor but it's not. Got 4.8v at IAT, 5v ref and good ground, that don't sound right 🤔

I have a CA-600 high amp current clamp with 2 banana plug connectors. Can I use a banana plug to BNC adapter to hook it up to the scope?

Is there a chance that oil hole is plugged (customer never changes oil) and phaser just stuck in one position and physically can't change timing? At that point whole engine is junk and can't be revived? Great video! Can't wait for next one!

Good job

Thank you very much use full video

Does the pico do fwhm (full width half max) or peak integration? Those two metrics could quantify less subjective results and eliminate the need for mspaint. Which, btw, is a great hack!!! Awesome stuff

Oooooh can't wait

Which wire on coil do you back probe. Has 4 wire connector

Hi ,please what is the cost of that particular obd diagnostic scanner you are using and how can I ship it to Africa

Mike, great series, love all your training and NGK/NTK products. Listen. we are working on a 2006 Lexus IS 350 with P0017. Customer Shot the parts cannon at it and surprise nothing is fixed. I want to use this process, waiting on my probe kit from AES to get here. I am using the Snap On Verus Pro with M4 Scope, how would you set this up, I am new to using scopes. Much like you, I was a dealer tech for years and never used one while there, now I regret it but such is life and we move forward. any help on this would be appreciated.

Hi Mike. I recently ran across the Wells videos, watched a few so far, and I am impressed with the content you and Wells VE have put together. A very nice presentation using the Pico scope (I am looking to upgrade my scope) and a common sense troubleshooting approach. I love your hit on the service manual instructions...as a small shop owner, I agree 100 percent! Also considering the purchase of a Launch Tech X-431 Pro 3 and would like to know your thoughts on it.

I have a 2.0 2009 dodge caliber which shows a negative 120 degrees on the exhaust cam, versus a positive 120 degrees on the intake cam! This is a po017 code! It won't do any good to do a relative compression test to determine whether or not it has jumped timing!

Good job 👍

hey mike at 500ms/div try upping your sample rate to 6MS and filtering after the fact. paints a pretty picture

What if I have 4 cylinder engine how can I use this test? I will have no other bank to compare?

Exselecte diagnostic amigo. Mi. Respeto. Pero tengo. Una. Preguta. Tenica. Cual. Es. El. Punto. De. Chekiar. La. Compression. Con. El. Pico. Osilocopio. Amigo. Como te das. Cueta. Ke. Silindro. Estas. Dañado. Como estas. La cosa grasia

I use the Verus Edge and have a Pico 2000A clamp like this video. Any quick way to determine the correct voltage scaling for set up purposes?

Mike love this series. Like the way you use paint. I have a Pico with windows 10 can I use paint or do I have to download it ? Take care

hi there mike, for a good engine what should be the max amp peak?? and viceversa.....

Poo16 , cam correlation bank 1 .

Awesome

Good video. Can't you just move the lead to a bank 1 cylinder and trigger off a bank 1 cylinder and repeat the test. If the compression max doesn't line up with the coil voltage change, then you know you got a timing issue. Otherwise, the lower compression peaks likely don't mean that much.

On a V6 (3.6), if the relative compression is all good, can this necessarily rule out a stretched / jumped timing chain on one bank ? I'm thinking that low relative compression might only show up under load.

Hey, Mike. I don't see you use an attenuator and a low amp clamp with the ignition trigger. Isn't it possible to use an amp clamp and an attenuator to protect the scope?

I have watched this video a few times. And I noticed the constant dip in currant before TDC Is that because of timing is off ?

Will a relative compress test help for a four cylinder timing belt check

Hey bud! I have a 2009 Jepp Patriot with this code and I'm trying to figure out if the Belt slipped and it's out of phase or is it something else. It's important to know that I had a head gasket issue last summer and used one of those liquids to that you put in your cooling system since I had a coolant leak. So my question is, could this be the reason why this code is coming on before I tear up half an engine to check if crankshaft and camshafts are in phase? I have the time so maybe I should do a compression test first? And it's only 4 cylinders so it shouldn't be that bad. Finally, the fact that the car runs (not optimal, jerking when cold but OK, plus I have a constant engine light on) could be a sign that it didn't skip and can be the head gasket. How do I tackle this? Thanks!!!

Good job Mike, are your parts available through WorldPac?

So did u try checking timing with pressure transducer???

Hi mike excellente video, one question mike, how do you backprobe cylinder #4 ? I did not see what was at the end of the cable that goes to #4. Thank you mike cheers from Ontario ca,

What lab scope are you using?

useful

He's talking good tech talk but what about the folks don't have access to that kind of technology.

What brand scope are you using?

Every time I go after a Toyota fuel pump relay, it's called a C/OPN relay and it's buried and/or integrated with the under dash fuse box, never to be seen again. If there's a spot labeled for fuel pump relay in the under hood block, it's a blank space and the C/OPN relay laughs at me again. Then, if there's floor access to disable the fuel pump under the rear seat, said rear seat will have child car seats and what looks like hurricane debris level family junk in it and under the seat will be stale or soggy cheerios, cheetos, and skittles that have somehow melted and molted and evolved into some parasitic life form that's suddenly stuck to my arm and it looks like it's moving....get it off me....You got the fuel pump relay under the hood...Why yes I'm whining. What gave it away? Anyway, thanks as always for the videos. Now seriously, go get something to pry this skittle amoeba thing off my arm.

Pressure transducer time

Thank you for calling and thank you for visiting this is obviously you're here because you want to be to tell you I don't know this white boy's name you call him uneducated educated high school diploma okay get in my way let me talk to you let me talk to you what we going to do today

Ok. So, I agree there are quicker ways to perform diagnostics. Where I disagree is the hour of diagnostic time should be looked at as a sacred totem which never will be questioned. Fuck that. Get paid. If you really need extra time diagnosing a problem……. Get that time!!!! Yes, the customer has to pay for it. We are pretty much the only industry where we shoot our selves in the foot over pride. Big reason you have good techs living in fucking poverty is nonsense like this. Make your cake, brothers!