Boom first!!! Great video and approach brotha. Not having to Disassemble an engine to verify head gasket issue is top notch. Comes with skill and knowledge do do this with the scope. .Great video bro.
CODY I APPRECIATE YOUR HONESTY SO I AM SUBSCRIBING TO YOUR CHANNEL , ANY LOCK I CAN GET MY HANDS ON ONE OF THOSE PIEZO SENSORS THEY LOOK LIKE THEY WORK VERY WELL . ALL THE BEST AND PLEASE KEEP UP THE GOOD WORK !
8power0 thanks for the subscription. I’m in the works of making some more. Still waiting on parts to show up, but I’ll definitely let you know once I get them done.
Rick Williams II hey buddy thanks for taking interest in my sensors. You can email me at Cody’sAutoDiagnostics@gmail.com or find me on Facebook at Cody’s auto Diagnostics and shoot me a message. Please be sure to put pulse sensor in the heading.
I like the fact that you use a lab scope for a lot of your testing it especially helps people like myself that are just now getting in a diagnostics and we’re starting to use the scope more often. I got a lot of added benefit from watching diagnosticians like yourself do things like this for those of us that are new school diagnosticians just starting out
When you have the test equipment and hand such as a scope and a pressure sensor, it makes sense to use them to confirm a diagnosis without any disassembly. Keep up the good work Mario! :))
Absolutely fantastic never thought of that before but as soon as I saw pressure sensor wave it was boom. Don't worry about being heavy on scope use it should show the need and encourage more people to use them. Keep up the good work
I'm in the process of doing head gaskets myself. In my case, I didn't have to do any testing. Windstar 3.8ltr never overheated, but was pouring coolant out of the exhaust. It could've been intake or gasket I suppose, but I did that 3 yrs ago. I didn't have that top on my list. Windstars are known for blowing out the gasket, as it rusts or rots out usually near the cylinder. Only about 3 tspns of coolant in the oil, when I drained it to check. So I was sure to go straight to head gaskets here. #4 cylinder on the gasket failed. I like to see other methods of checking for head gasket issues, especially when they're only suspected... they really 'can be' hard to pinpoint sometimes. Buenísimo video Mario!
I like how you demonstrate how a scope could shine in various situations. From what I can see in the field using and understanding what is going on with a scope is pretty advanced. I always learn something new watching your channel. Good stuff Mario, keep them coming!
MARIO YOU ARE TRULY ON THE RIGHT TRACK TO BECOMING AN ADVANCED DIAGNOSTICIAN.., THANKS SO MUCH FOR YOUR TIME AND THE VIDEO . PLEASE KEEP THE VIDEOS COMING WE HERE TRULY APPRECIATE THEM . REALLY WISHED WE COULD HAVE SEEN THE FULL PROCEDURE MY BY NEXT TIME AND AGAIN THANKS SO MUCH !
hey Mario....had a Honda pilot 3.5 come in with a misfire on #4 #5 did a quick coil plug swap to 6 no change....so I remembered this vid....with my first look sensor at the radiator and the junction at the back of engine disconnected to disable injectors, cranking test showed 2 large humps followed by 4 small ones being repeated.....couldn't deny that pressure was introduced into the radiator.....thanks bro
Mario, man, i very much enjoy watching your video's with many others, the scope usage is very interesting, actually i bought a 4425 here not far off from when you made this video, took awhile to break it out and use it but now... i dont want to stop using it, getting used to how to setup, what to look for etc, im absolutely freaking loving it.. and hell i just ordered one of Cody's dps sensors... feel like im jumping in maybe kinda deep in a way but why not.. but through watching you and cody and others on youtube and through experience, i know its made a difference.. always the little things that make the difference!! and i know this is an older video lol ..
Well done Mario. Keep it up. If there is ever a debate why this test is even used. As I have had guys say... Head gasket job is both heads pulled. They would be correct in most cases but.... If this job was under warranty for example, it would be beneficial to only remove the head that is at fault. So I try to get guys to practice this approach so if they are ever really in need to diagnose the specific cylinder effectively. This is the strategy used. Again brother well done and keep it up.
Yeah there's always that argument. I don't like to generalize. I want to say hey this exact cylinder is leaking into the coolant system. But that's just me
A great video. The first thing I reach for is the scope. A multimeter is inadequate for today’s automobiles. You will NEVER guess with a scope. Thank you for sharing. 1.9K. Great.
You're talkin about the cylinder leakage fluid for the tester, but that fluid only checks for C0 not for NOx. We use the gas analyzers to check for head gaskets failure. And I tell you it takes only 5 to 10 seconds to pull the NOx through the cooling system.
In cases of say a warranty job, where they only want the faulty head to be replaced, this would come in handy. Also this radiator was busted midway so i doubt it would read much co2 or nox at the radiator filler. Much less was it able to be topped off. This vehicle was a crank no start in my bay so i doubt you would get much nox at all from it.
No no that test was cool man I was just talking about another test you can perform. But the test you did is really good information to determine if it is a V block to know witch head is leaking. Just adding more tests for you.😊
@@SuperMarioDiagnostics Yes they'er pricey but the other diagnostics test you can perform are pretty cool, and there are few of them. Like 02 if it is a short band sensor then it only reads 02 then there is another test for it. Checking for a catalytic converter by the readings you can tell what part of the converter is shot.
Like it Mario, I am not complaining about scope videos, I have the Pico 4425 & the WPS500 transducer. Love mine, and like seeing these videos. If you ever get a chance to use the Math channels on a diagnostic I am interested on what diagnostics need the additional setup. There are a few videos out there touching base on this setup, but your way of putting it out there with your videos I am sure to nail it, thanks for the share & keep it coming.
I'm going to DIY my own pressure transducer like this. My plan is to get a radiator cap pressure tester, run a hose from there to a sealed metal jug (to collect any overflow and keep it from going to the sensor) and to the transducer from there. Can't afford all that high dollar stuff. Still using a hantek scope with a homemade transducer "box" (replaceable transducer with 18650 battery bank providing 5v reference and ground for the transducer). It costed about 30 to 40 bucks to make the transducer box. Compare that with Pico's specialty transducers they cost hundreds.
Non-invasive, time efficient testing always for the win. Nice job sir. I have 2 of Mike's sensors. I'm waiting for an opportunity to use both at the same time to prove a fault
Great video! Even if I can diagnose something without a scope, I always go back and put my scope on it. That's the only way you're going to get better and can eventually do most of your diags with scopes. I still have a long way to go but I remember the first time using a scope I was like, "damn I think this scope is broken, this don't look like scanner danner's waveforms" 😂
Well done Mario! I learned something new from your video. Just subscribed to your channel. I've been diagnosing and teaching automotive for thirty years and I am still learning. I just want to know who is the ONE person who gave your video a thumbs-down?
What sensor are you hooked up to on the green line? I see how you are using the cyl 2 as a trigger to tell what cylinder is what, but what are you tapping into to get the signal of low compression??? Thank you very good video
Sweet video bro.. Real quick and easy method to find a blown head gasket.. Feel free to scope away man lol.. Awesome work brother thank you for sharing
If you could show how you set up pressure pulse sensors to the scope and calibrate them to read psi range or vacuum range.. Basically set up scales..that would be sweet
@@SuperMarioDiagnostics Also you could have shown how you set up your sensor to prevent coolant from entering, did you just raise it a bit higher than the reservoir.
The coolant level was low due to a busted radiator. No need for the coolant to be topped off, the sensor is sensitive enough to pick up any pulses within the cooling system. But I'll definitely keep that in mind when posting the set up video
Awesome video but incase u cant afford a labscope, and want a cheper way to check if u have a headgasket issue they sale a tester kit you put it above ur rap cap with a certain green liquid if it turns yellow then you have a head issue. I believe most auto store rent this out its really cheap.
Sweet! Would you consider this a "severe" headgasket leak? Ive had good luck using pulse sensors on severe failures, but haven't had the chance to use this method on a more minor failure.
@@SuperMarioDiagnostics I'm glad to hear that. I havent seen many people use this method on less sever failures, so I'm glad to see it works just as well.
You had good luck from that booster pack jump box? I have that same one and it’s tough as nails! It’s the only one we’ve had at the shop that lasted as long as it has.
Great test I can see the value in doing this especially for a quick warranty diag. but just quick question. As a flat rate tech. How do you keep from your diagnostics time being cut? Where the guy next to you doing the same diagnosis of 2-3 hrs to do a compression test/ leak down where I can see the shop or customer only wanting to pay half of the time for a scope test like this. Which is higher level and cost you more in equipment cost.
Mario thanks for all the scope checks. I will definitely checkout Cody's sensor. Your the best and enjoy learning from you. Yes I definitely follow your circle of subscribers. Yours SMA Keith Ivan Cody Big Dog50001 Mike the Disgruntled mechanic and S&A automotive. If I'm missing any let me know. Thanks for your help Mario. Artie 👍👍👍
Much appreciated! Check out diagnosedan, oz mechanics, positive lead diagnostics, science of diagnostics, simply diagnostics, the practical mechanic, trained by techs, last but not least voltage drop diagnostics
Happy New Year from Hawaii! Great video! Obviously the increase pressure from leak in the head gasket is self explanatory, but what causes the other pulses in the cooling system? Im thinking, water pump is affected by the cranking/compression of the cylinders? Thanks!
I wonder how sensitive this test is... I was working on a Toyota MR2 that would overheat after a 30 minute drive and took a bit of coolant each time I checked it when cold. With the design of the cooling system with the coolant hoses running under the car, it was impossible to tell if there were air bubbles coming out of the filler neck. Bleeding air out of the radiator and heater core was a pain in the ass. Cooling fans working as expected. Absolutely no signs of coolant leakage in/out/under/next to the car anywhere. Compression test showed a variance of less than 10lbs. Combustion leak tester showed clean multiple times. It went to multiple mechanics with no success. (should have kept shopping and found someone like you). The owner traded it in on another car. I always suspected that it had a very small combustion leak. Do you think this test would have caught it?
This particular situation was a busted radiator as well, so coolant level was low whether i liked it or not. Really keeping the coolant plenty low will still give you a reading with this sensor
nice test! that dude cody is ok! I started watching him will you send the heads out? and doing both banks? I always get a little nervous as too.... was the motor cooked at one time any coolant in the oil?
No signs of obvious oil in coolant. Cody is very cool, sharp dude. The customer has yet to approve anything at all, were suggesting both heads, we usually send out the heads to get serviced. That way we can warranty the job. Thanks for swinging by Sir
In agreement with you "Mechanical" = moving/pivoting/rotating/interacting parts IMO... I wouldn't consider sandwiching a head gasket to be "mechanical"
@@SuperMarioDiagnostics ok thanks I did this test today on a confirmed head gasket by other methods but I couldn't see any spikes with my pressure pulse sensor. I guess there may be times its not evident on the pulse sensor 🤔. I don't understand why there is a pulse for every compression event also as surly there's no pressure from cylinder in cooling system on a good vehicle. Or is this the momentarily slow down period of each engine cycle would you say?
So you had a failed relative compression test and during the dead hole you didn't see a spike? This sensor is sensitive enough to pick up water pump activity, that may be what you are seeing. But without analyzing the waveforms myself, i can't be of that much more help. Feel free to contact me through Facebook if you'd like
