Be sure to check out Cody's Auto Diagnostics: kzfaq.info/love/7AtpaCPv1QXYa-yE2sPQbQ

Awesome stuff... but you worry too much about what others "might do" or what they think that "you should" do. It's your channel... keep the great videos coming! =)

I don't understand how you have the time to make money as a technician and then make such amazing content. The videos you make Mario are top-notch. you're doing the automotive industry a major service.

Mario, simply awesome video! The way you went through the list of possible outcomes, crossing out the ones that do not fit, but not committing to any particular one until you had solid evidence. That's how science is done!

Great job and video. Not everyone is as savvy as you on using a scope. Showing how you set the scope up and how to use the different testers/adapters is a very big plus for everyone who watches your videos. Keep them coming.

As always excellent video. These reality videos are the best ones. The imperfections teach me more than perfect videos do. And since it usually takes me multiple times to learn something, repeats cases are fine with me. Thanks Mario.

That was quick an easy. Would not believe how much I had to pay GM dealer to diagnose a cracked valve in my 2004 Saturn 2.2 L. They never told if it was intake or exhaust.

Great video Mario thanks for sharing and walking all of us through the process.

Thank you Mario. Good job buddy. Have a blessed and safe week.

Great video Mario. I enjoy watching the real time and step by step setup videos. Keep up the good work and keep them coming.

It's great watching you work and seeing your thought process, thanks for sharing it.

Great job Mario. Engine mechanical is always the hardest for me, so thank you! Best video for me yet!

Awesome job Mario! Great Work! Very informative, great use of Pico as usual, and REAL. Keep on Keep'in it REAL Brother!

Sweet diag Mario. It's great to work along side you as you make your diagnosis. Thanks!

Awesome video bud. This is my first video of yours and I can't wait to see more. thank you. Keep up the awesome job bud.

Great video. Showing the whole process is helpful. I appreciate it.

Love the real time. Thanks for taking the time to teach....

i love your video and your humble proffessionalism on reasoning to those skeptical of the way in which you choose in how to do your work.The reality though is you have set an image for yourself as one that has proven by your actions a willingness to unselfishly set a example in being a GREAT contributor to humanity.In my opinion though i feel that you dont need to apologize because of the repetitive demonstrations because practice makes perfect so you probably get there by tomorrow morning!

Still watching this video but wanted to say how much I enjoy the real time videos brother!

Another great video bro! Great work. I always learn a lil more watching you work

Great video and thank you for taking the time to share this with us. I can't understand why there would be even 1 thumbs down on this

Your videos are great don’t sell yourself short on your knowledge thanks for sharing

Another job well done Mario, the people who don't make mistake are the ones who does nothing.

Awesome video Mario! I like the real time videos. If you weren't explaining the process or setting up the camera, you could probably have diagnosed this with 20 to 25 min... still ahead of time, and with a definitive direction. This was still quite noninvasive compared to what most would do in the same position. Just excellent job over all! 👍👍👏😊🤗

Great video Mario! Thanks for sharing 👍👍

Great diag Mario - enjoyed meeting you at SuperSat!

Good work Mario , happy to see videos rolling in again . Wish I could of made it out to Supper Saturday , but didn't happen . Hope to be at it next year .

As a DIY guy this is over my head but it was interesting just the same.

FInally catching up brother. Love this video. Keep doing your thing and don't worry. Great stuff!!!

Great work, thanks for the education

Don't mind at all. Love these videos.

Great video mechanical problem is great always learning thank you

Great thought process Buddy top job 👍👍👍👍

very enjoyable video, I learned a lot from you.

Great video Mario!!! I have a HHR that has a misfire on cylinder 1 and you guessed it, exhaust valve issue . Parts should be here in the next few days for the repair.

Thank you for taking the time to make these videos! These are very helpful for Picoscope users. Oh and quit apologizing! you do a great job with videos.

I use a small toy balloon to find TDC. Slip the balloon over the compression test hose nipple. Turn engine and watch for balloon to inflate. It shows TDC accurately. I use 10 foot audio patch cables to extend scope leads for getting to the rear of the car or to get inside the car from under hood. They have RCA male plugs so I use RCA-F to BNC-M adapters to make connections. I find exhaust pulse waveforms similar to intake waveforms. Mostly you're looking for the "odd man out", then ID the cylinder and look closer at it. To ID the cylinder; label the firing order, from the sync, onto the waveform. Then label the companion cylinders, in FO, under the IGN FO. The exhaust pulse for the sync cylinder is shown by the companion cylinder label. The same for an intake. ie: the short intake pulse on this car is cylinder 2, as you said because of crankshaft speed. An exhaust valve leak won't, otherwise, affect the intake waveform as seen by the cylinder 3 intake pull being equal to cyl4 pull. FLS type sensor waveforms can be confusing because they are AC coupled and don't have a fixed baseline. I get the most information from the "swing" of the waveform. The length of the rise or of the fall of the waveform as compared to the rises , or falls, of other parts of the waveform show differences in cylinders. Your explanation of the expansion void is generally correct but caution is needed because of the delayed intake valve timing of some engines . The degrees BTDC that the intake closed and the degrees ATDC when the exhaust opens was generally equal but VVT and Dynamic Compression Ratio engines delay closing the intake so that an expansion void may form. It won't be as pronounced as a large leak but could lead you astray. I'm anxious to see what Dmitriy's video shows.

Good job, great video.

👍 thanks mario for the info

Great diag!!

My wrench never falls ! 😂 good stuff. Enjoyed this 👍

Have you tried a smoke test on a leaking cylinder? Works great for me. Thanks for the continuing education and scope training.

Always enjoy your videos mario, keep them coming. You should get yourself a long bnc cable for pulse sensor at exhaust. And just capture it all at one time, one waveform on screen , intake, exhaust and crankcase. 👍

Hey Mario. I'm another one who likes the real time videos. Showing everything being set up is a help to me. Got your stickers in the mail a few days ago so Thank You for those and all the great videos.

Great review. I'm still trying to wrap my head around those intake pulse measurements, really the derivative of absolute pressure.

hey super mario just got to say when i first watched your video i was like ok ... but now after about 20 of them dude your cool i like em keep up the good work an i say that because i like videos where it is what it is ... an you say when you could have done shit different an we all learn from our mistakes. dude never give that up that makes the video real an its cool cause i dont care who you are we always say we could have maybe did it different after we know the problem ... stay safe love the video keep em coming ....

Dude I always enjoy your videos. Out of all the great tools being made these days there should be some kind of super magnetic socket or a super grab wrench for staying on that crank bolt. Good Job as always 👍🏻

Very interesting. I learned how to use cylinder pressure transducer and an inductive pick up to a dual trace scope to isolate a particular leaking cylinder, how to add a vacuum transducer to the mix get a picture of the pressure fluctuations, (being an electrician I would have no trouble making a sensor extension to reach the exhaust) and how you interpreted that pressure picture to know it was not leaking t the intake, how to do the leak down test to use process of elimination to eliminate the rings and intake as suspects and then check the exhaust to verify that's where the leak is. I just can't afford that pico scope so I would have to do the leak down test on each cylinder until I found it.

A GREAT video. This is why I watch KZfaq videos. The diagnostic thought process is EVERYTHING! Congratulations on 5.25K. You deserve it. And of course, thank you for sharing.

Glad I'm not the only one having issues at first reading the position of fuses. Also I've noticed working on my son in law 05, there are some places on the fuse panel you can accidentally put them in two separate circuits. I Fried a diode. Never ran into that issue with any other vehicle.

👍👍 great video.

Great video man. This brings flashbacks to my first automotive job working for a Saturn dealer! I also suck at looking at exhaust pulses, when looking for a leak, but I’d like to see more of them to hopefully get better at them.

great video SM i love the engine mech videos keep em coming I would add the tailpipe to your diag get another Nicholsen PPS sensor and do a 4 channel capture all the best bro

👍👍 They get better and better bro!

i see we use the same tdc gauge, , great video

You don’t have to keep apologizing, we thank you for taking out the time to do that. I am no where near that skill level but I wonder if you used a balloon over that connector to get top dead center it would free up your hand to help you turn the engine over, then wait for the ballon to fill up. Just my thinking out the box!

Nice !

Good video👍

Mario, excellent video. thank you for showing everything in real-time. and thanks for showing all of the different steps in detail. very informative and helpful. Have a good one Artie 👍👍👍 Mario when you installed the amp clamp on the battery wire can you put it around the chafe material or did you put in a spot where it was just the cable. thanks bud

Great video and diagnosis, the only way to never drop a tool is to never use it in the first place, anyone who uses tools drops them

Another great video Mario! That real time is cool stuff.

Mario, great video! Could the reduced intake pull when the weak cylinder in compression stroke be accountable to just enough leak by the exhaust valve during overlap of the other cylinder's valves to reduce the intake pull? If it was an intake valve leak then the pressure from compression stroke would make a spike upwards in the other cylinder's intake pull? Just trying to learn, love the channel.

Great video as usual my fiend! Keep them coming! I love to learn more and more of cylinder and pressure waveforms! Question? When you do the leak test, if you use the first look sensor on the exhaust will it catch it? I mean is air flow so it should right? An easiest and graphic way to show the leak.

what will be the theory of weak intake pull as you said I have been told intake issues but there are variables for sure. thanks for sharing

Wellllll my socket never fell off on the explorer with a 4.6 I did last week. I did not cut my hand all up on the shroud either 😜😜. Nice video, I’m learning about pressures do I like it.

In depth diagnosis and verification!

Nice video just got a new sub

What was the fix on this one

Good vid carnàl

that was super.... mario! yes its always the 10mm. the struggle is real

My dad got the same car and doing the misfire. Misfire at idel and when I take off then straitens out after you accelerate.....used a pocket scanner on it. Replaced both o2 sensors mad sensor..then still doing it. Replaced ignition module and coil pack with plugs and boots...got better pickup in accelerations...but still has the misfire but to it smells like it's loading up on fuel. Too. So I'd replaced the map sensor because I'd read up if they go they do those systems...still doing it....re did the pocket scan.. 0 codes 4 ready 3 Inc monitrs...4 ready are egr o2snsr sec air comp. 3 Inc monitrs ac fuel misfire.. Car got 116.000 on it has a stupid eco tec 2.2..can u help please?

New shop for Super Mario.

Mario!I got a p0340 that won't go away on a 2006 Saturn Vue ecotec.I changed the icm for a misfire and coil pack.Runs great but code won't go away.Please help me!Point me in the right direction.

Mario would it be correct to say that cylinder 2 got a little ripped off on its intake pull because the crankshaft was slowing down after it had sped up because of the low compression in cyl 3?

What was the fix and what was the cost?

I haven’t had a wrench fall off a crank bolt in over a year. Lol. Maybe cause I haven’t put a wrench on da crank bolt thus my self analysis is? I need to get off the couch. Good video but expecting a follow up on what you found. Broken spring, carbon, heads coming off for valve work?

who did you say will have good explanation about those waveform??

Hey Mario how often do you recommend a rear differential fluid change and a fuel system flush?

sweeet!

Is this a trim 2?

Hi Mario Great Video! I am just getting into using the WPS and First look sensors to troubleshoot engine mechanical issues. Maybe you can shed some light here. I was surprised to see this cylinder with an exhaust valve leak severe enough to cause a noticeable cranking cadence issue didn't really seem to show up in cylinder 3's intake pull as weaker. At a quick glance my inital thought as well went right to intake valve leak until I calmed down and realized that the 'weaker' pull in your pattern was not in the right spot to be caused by 3 on the upstroke to TDC. Thoughts? And keep the videos coming!

Esas llaves chicharras de Matco son fenomenales

What was the actual diagnosis? Stuck exhaust valve?

Good video ..What kind of borescope were you using ?

💪🏻👍🏻

It’s about time you start stepping out of your comfort zone. Start working those exhaust pulses. Great work though. that would’ve been a good car to get some exhaust date on

Hey Mario what boroscope are you using here? thanks

My wrench fell today. :-) How critical is a first look sensor for intake pulse over a pressure transducer?

So I had a handful of codes thrown. P0300 etc etc. I changed the ICM which took care of the misfires on #2 and 3, stopped blowing fuel in the cat to super heat it.......... Now I hang a P0341 camshaft position sensor code. However, the this 2.2L does not have a camshaft position sensor. Does anyone have an idea of what it could be? Engine runs pretty good but I do feel a miss here and there, no misfire codes at all though.

Great logical thinking there mario. I'll be doing a vid on current flow soon if your interested. Did you get my stickers? Cheers dave

I dont know why I just thought of this But when you said exhuast pulse this popped in my head One time I did a ride along with the customer while I monitored the labtop It was winter and dang customer passed some massive gas on me 🤢 Man I almost walked back to shop ,it was awful

It would not be a bad idea when you find an exhaust valve not sealing or a chunk missing out of one to do an injector leak down test. Just to make sure you don't have one that is restricted. An injector that is partially plugged/restricted causes the valve to get extremely hot and possibly warp or have a chunk of it go missing. Just a thought.

out of curiosity, why wouldn't you synch to the #1 injector trigger as opposed to going in-cylinder?

"I like to keep some of these around, these fuse pullers"..... Blames you for every time I can't find a fuse puller in it's spot..... Retrieves long nose pliers from toolbox drawer that is full of fuse pullers from various makes and models of vehicles

From peru 👍🏽

Hey bud these are really good videos but the question I have is Once you know which cylinder is bad why not just do the leak down test and go from there Instead of the complex computer graphics thing Because at the end you’re still confirming everything with a Basic leak down test tool

Does it need a new gasket?

Where are you located?

Hey Mario sorry but I didn’t quite catch the gentleman’s last name you mentioned for the video.. I’d love to see watch it

Music video or prices right lol jk my friend u saved me thank you