xD xD XD the only way to fix those Euro cars, Dan....NO SHIRT REQUIRED hahaha!That educational simulation software is so cool...maybe I will try to get the high score ;)
Please do but your not allowed to use duct tape, and you can do it indoors so you can even play it shirtless in the winter😉 Ha ha, thanks for stopping by! Love your Video's!💪
As I told you before there is no one who explains better than you, anyone with a little mechanical inclination can save thousands of dollars .... man two thumbs up ......
I am 110% sure Dan new it was a compression issue from the minute he first cranked the engine, what I love about his videos, he walks us through step by step to ensure your average audience is able to follow. Watching your other videos, it is very rare to find a mechanic with such in-depth electrical and electronic experience. very professional and is able to pass the knowledge on in a clear manner. very impressed all the way from Canada.
Who is disliking these videos?? Parts Changers I suspect. Again very well executed and I never knew about that relative compression tester. I have always thought you had to have a scope for that. where you find these random tools I never heard of before is beyond me!!
Hey Dan, i have to 'HAND' it to you on this diagnostic job, 🙂 ,you could have put a big Baloon on the end of the exhaust pipe, but the the workshop item fitted like a 'GLOVE' Lol !! i knew some one who fitted an old worn out 'HOT WATER BOTTLE' on the end of the exhaust and used strong cable tie's, and it went the size of a bouncy castle before it blew up!! Thanks for all the great Video's, will check out the software too, keep doing more please, Bless 😇
Hi Dan, thought I would like to tell you the way I was taught to do this diagnosis back in the 80's. Missfire check step 1. Compression test. Step 2 on confirmed low compression pour a little engine oil into the cylinder, carry out compression test again. Results. If an increase in compression it is piston ring or piston related. The oil seals the rings temporarily. If no change it is a valve and nearly always an exhaust valve with a V shaped burnt chunk out of it. It was more common those days because no one was even running on unleaded fuel and I remember the first advert for a car with a cat fitted and we laughed about how were you supposed to find a garage that sold unleaded fuel to put in it.
Good video for those that don't know. One small thing I think you should add. Tell people never to just drop spark plugs into their holes as they can sometimes hit the side as they fall in and alter the spark gap. I've just found your channel thanks to South Main Auto, and remember if he can do it, you can do it. ;-)
Wow, I'm impressed, I was sure the rings were bad, but you proved me wrong. I used to be a mechanic in the late 60's and early 70's, it was easy back then, points, plugs, condenser, and that was your tuneup. I'm lost under the hood now, but am learning, thanks to men like you who are willing to share with us. Thanks again.
Great video for diagnosing a misfire for learners. Any experienced mechanic would call compression without testing anything just from the engine cranking sound. The drop test would confirm the low cylinder without any need to swap plugs and coils. The tool looks awesome for those without a scope but remember it is a relative compression test and not an actual compression test. In the test shown we seen 1 very low and 2 low and 1 high. You will always see a high after the very low cylinder as the crank spins faster on the cylinder with very low comp and then draws more amps on the starter with the next cylinder in firing order that has compression. It is likely that the other 3 cylinders are equal in comp but may or may not be low also.
With those relative compression tests, it's worth remembering that a bad reading is always followed by an unusually high one, because of the motor speeding up while it pushes the bad cylinder. So, the 3 good cylinders probably have better balance than it seems on the tester. The sticking valve is the only issue.
Dan ,Ivan is a good guy. He helped a lot of people. Lots of mechanics out there just swap parts and leave the problem. That simulation game only have sketchy circuit diagrams. No info on break out box. No way to locate components .
You have given me another reason to seriously consider investing in a storage scope. I'm more in the electronic line where a good scope is almost a no-brainer (I already have an analog scope), but it seems rather obvious that you could measure the same voltage ripple on your 12V battery while cranking, and look for the same regular shape to the ripple. If every 3rd dip is a bit more shallow, you know there is a compression issue.
Dan you are a genius the way you explain the fault and the way you go about it I love your videos can't stop watching just shows you what main dealers are like
Excellent video!! Great teaching skills, and I knew there must have been an Ivan connection. He uses a Foxelli headlamp which I started using. At 69 years I need light to c. It's rechargeable and I have two. Never leave home without it. And I need you tube handy, so that I have DD with me all the time.
Dan your videos are so precise and clear. truly enjoy watching and learning from you. Thanks much for sharing your knowledge and time. The car didn't sound too good on cranking start-up. Am I correct in hearing that? Thanks again for the video. 👍
Hi Engineer Dan: I am From Baghdad - Iraq. Thank you for this wonderful channel. You taught me a lot about the correct way of diagnosis.. and this video isvery very nice. Thank you from the bottom of my heart.
That's very interesting Dan. I might just have to play around with it. But Ivan will be the high score for sure! Great work showing us and explaining the misfire. The ending was spot on!
Excellent video. I learned to use a chopstick in spark plug hole to find TDC at an Asian auto repair shop in 1988. For carboned up (not burnt) valves on a dodge 5.2 V8 a person can use a cordless drill on valve stem with head on the engine after removing keepers and spring. chuck it tight and move up and down to lap in place. a little more work with OHC mazda which would necessitate cam removal.
LMAO !! the PHAD impression was spot on, as a do it yourselfer i can relate to his channel. Maybe a Scanner Danner, Eric O. or ETCG video in the near future. Keep up the good work!
Dan, just found your channel and I have been binge watching. You are a great teacher and I appreciate all your hard work. Keep the videos coming. Awesome job. Thank you. 👍👍
You are an absolute star Dan. I have watched a couple of your videos and now I’m a subscriber. You are teaching me more in 30 seconds than anybody can in 30 weeks. 👍
Danny boy I have your respect mam I am taking my introduction to engine repair and in class we are using electude and since you said you have helped them make their program Im proud
Cool software! You can hear from the first time you cranked the car that the rc failed. I'm surprised you didn't put a transducer in there. Great work bud 💪 oh man poor Ivan 🤣
@@kyhomegarage3430 ha ha so many languages could do a full video on just the intro if i need to cover them all. But you are very welcome indeed,great to have you here. Yes the pico pressure transducer is great. Getting the latest Gmto model in the beginning of next year, i can't wait!
Hi, I am Mahadev from India. I watching your videos I appreciate your step by step diagnosis to reach the actual root cause. All videos are knowledgeable and helpful. I like very much. Thank you.
I have over 25 years experience on the automobile industry and I got to say that DiagnoseDan is very good for the experience ones and the new people that want to get into the industry. Thank you god bless you and your family
Following you for the past 4 years. I really appreciate your time giving as all the knowledge and experience by dealing, You are the best, thank you so much, regards from dubai
Dan, you need to take a vacation/business trip to NYC. I've met Eric O. (who is afraid of flying and has never been on an airplane), Keith , and Ivan and you should hook up with these guys for a couple of days. Keith has so much business he could offload some if it to you and you could pay for your airplane ticket and housing by just diagnosing Keith's overflow cars for a couple of days. The three musketeers plus the Dutch boy storming the cars of NYC. I'm sure that Eric, Ivan and Keith are dying to meet you. Actually, I'm certain of it. You should contact these three guys and come up with a time and place to meet up in New York City. Could get a couple of laugh out loud videos out of this meet up. Love the no shirt Ivan fake video. Damn Russian thinks he's Putin.
I bought the electude simulator and is far from reality. Besides that the sound doesn't work, the fault codes is the simulator are very strange defined, a lean condition on o2 sensor will be like " o2 sensor circuit low voltage ", and so on.
@@JoitaConstantin On my computer the sound Works fine and O2 sensor signal low is the perfect code for a lean mixture. Because the O2 sensor voltage is low when the mixture is lean. It doesn't say mixture lean because there are other reasons that could make the sensor signal low like a short to ground. If you want to learn more about this watch my video on O2 sensors.😊
@@Diagnosedan I know that a low voltage means a lean condition, but I never heard about that code description ( I am not a mechanic, so just based on my few checks on family and friends cars ). Now I am facing another issue: water temp sensor in the simulator is changing it's value from 90 to 100 degrees and back constantly when rpm is above 3000 in 2 seconds. New sensor, wiring, computer changed just because is a simulator and I have nothing to lose, and nothing changed. The initial problem was different, and even that one wasn't fixed. I don't know, but this thing is very tricky. Sorry for bringing this to you channel.
@@JoitaConstantin No problem but believe me the Simulator Works amazing and is designed and tested by the best in the industry. It is recommended to get the Electude Essentials to get a perfect explanation of all Systems. Only if your interested of course😊
Thanks for the Knowledge. This is better than wasting all my time going to a boring class. Very detailed and even went and beyond to make his diagnose show us evidence of the problem. Thanks you are a great instructor.
Dear Dan, no disrespect intended Sir, but did I just see you drop spark plugs into the spark plug well... You are so methodical and explain everything so meticulously, that it shocked me seeing you do that... Knowing that millions of people are watching and learning from you Sir, please show them the correct way to "install" plugs and not just dropping them into the hole. One could easily bend the gap or worse, break off the tip and then have that bounce around the combustion chamber causing all kinds of problems.. We are all in awe of you and am myself an avid viewer and subscriber. So please, emphasize proper working methods such as finger tightening things to get them going first before putting a wrench on it, installing plugs with a rubber pipe or something similar instead of dropping them, torque wrenching with proper torque specs etc etc... please know that no disrespect or ill meaning is intended with this message. You are an excellent teacher and are/will be emulated, so I'm sure you want all your subscribers to be the best of the best, so they fix it right the first time...
That’s the type of tool review the diyer needs, one that is geared for us to fix our vechiles with tools we can afford and actually work without going to tech schools to show us how to use them! Diagnos Dan did it again, you are in the top 3 of my favorites,thanks
hi from 76 year old ex Donnington GT championship outright winner . your presentations are superb .. amazingly easy to follow .. SORT OF. Not your fault, I am electronically a bit of a thicko. I have been beaten by a 1.9 VW tdi 1996 Seat Alhambra motor with an elusive hiccup misfire .which sometimes occurs and when it decides to happen it is almost exactly at 1900 rpm . getting brave I took it up to twice that rpm and the hiccup misfire occurred with more violence .. Hiccup is my best description of a complete split second hesitation . lower the rpm and all is well increase the rpm and again smooth running . not much help for you to get your head around . I sold it on at a discount price and it never missed a beat on the new owners test drive . Sometimes it will go for days without a problem . and then when it decides to resurrect it is a real pain .
Nice relative compression tool demo. The cranking sound was so uneven it sounds like a dead hole, but could not hear the other weak ones. The cams looked pretty dry, like there is lack of oil. I like to hand-thread in the plugs, then finish off with a wrench. Yes, Pine Hollow. Been there, seen that.
Yes! Leakdown tester! Love that tool. Quickest way to confirm your suspisions, and to determine if it's time for a new car or not. Most of my colleagues hate leakdown tests, but in most cases, it takes less time to do than if you spend a lot of time complaining about it.
My first leakdown test was on an Audi 2.0 TFSI with 50k km on it, and no oil change. It had air leaks from the exhaust valves, intake valves and piston rings. The customer tried to find someone to blame for his lack of maintenance, so he claimed that we never explained to him how important it is to change the oil.. :P
each time I watch one of your videos I learn more sand more...please continue to make the videos this clear as always.I mean showing exactly where you connect electric probes and stuff.
Good video! Just something to add: to an experienced Tech, you can just listen to the pitch the engine cranking & determine you have low compression on one or more cylinders. Also a vacuum guage will be a much more economical way of determining the condition of the engine. I love buying tools, but alot of times it seems like a great idea, but in reality, there are older proven methods.
@ 23:00 Differential pressure gauge(s). We use this tool on piston powered airplanes. You just had to be careful with the TDC, otherwise the propeller would whip around. Sometimes you could see a slight change on the gauge by wiggling the propeller, causing the rings to seat a little better.
Dan I'm even telling not co-workers about your channel, we are mobile techs for a nationwide auto body repair chain, we do the things they can't like diag, frame swaps and disassembly down to the structure of the car for them to do the repairs them we come back and reassemble sometimes two months later lol. We have all the factory software and such but boy supplied with a scope, there's been a few situations where i know i needed it but didn't have access, also space is very limited in our work vans and everything gets rattled and bounced around coz we drive a lot, do you have a recommendation for a at least a two channel scope that's very portable and tough with a screen with recording features? Maybe even file sharing coz we have to document every little detail dealing with auto insurance companies. I am watching all your videos and what your capable of is amazing and you make it look easy for sure. For me this is best training I've found and I've been doing icar and am tesla certified already. I will be a long time subscriber and can't wait for new videos
On the older Honda engines you can just pop the upstream O2 from the header to test for airflow there. Honda changed the design of their newer engines to position the exhaust header in the rear, not as easily reached. I'm sure a lot of engines are still positioning the O2 bung in the front. If there were any question you could just cut off a compression tester hose at that point, get a cigar and start blowing tons of smoke down the cylinder. It will give you some visual confirmation of leaks thru the exhaust valves coming out thru the O2 bung hole. Someone once told me you could hold a dollar bill on the exhaust to catch the intake stroke on a burned valve and it the tailpipe will suck the dollar in and spit it out. This didn't work for me when I tried it. The dollar caught on fire immediately.
The iTester is cool but for $500.00 I’ll stick with my cheap scope and an amp clamp. I want to thank you for your videos, I’ve learned so much from you and others I just wish I had You Tube 50 years ago. I’ve watched so much Scanner Danner that I noticed the compression problem when you first cranked it, I’m sure you also did. Thanks again.
Excellent diagnosis and explanation as always. However, I need to rain on your parade. Dropping a spark plug onto a well leaves the door open for the electrode to be damaged. Running the plug in the bore with an air ratchet that was not started by hand opens the door for a stripped plug and or cylinder head.
Great video Dan! I must admit I surprised when you disconnected the coils with the engine running. That can damage the ecm. I can't tell you how many ecm's I have seen with a popped driver for this very reason. I seen hundreds of GM ecm's with a popped driver from techs unplugging the IAC module while engine was running. Take care and thanks for sharing your knowledge and experience.
Another great video Dan but since i dropped the screw from the top of a spark plug right after i fitted the head on n had to take the head off again i always block the spark plug holes every time i take a plug out
cheers mate I had no choice (i was very poor then still poor now lol) but on £10 a week wages n wanting a 6 cylinder ford zodiac every penny counted n even i had no Idea at all about engines it was either fix it myself or no car, thank God them days cars where very easy to repair with Lots of access round the engine to work things we all do for what u like when young TC mate
I have to say that you explain the diagnosis so well. Many times so many details are left out manuals and videos that could really be useful, which you include in your videos. Making a part changing situation into an actual repair. Incredible job and video. Thank you so much for your time and posting.
Good evening Mr. Dan. I've ejoyed your videos very mutch, & have learned a few things here and there specialy the way you explain things. How ever, I did noticed one thing, when you were swaping plugs . Please note I 'm wrinting this coment with all due respect to you, and others. I noticed that you droped the plugs into their holes and then used your cordless wrench on them with out making sure that they were started correctly. One ot the local shops here in Baja , called me one day to diagnose a misfire problem they were having with a vehicle similar to the one you are working with. the misfire started after they had done a tune up. Long story short the tech that installed the spark plugs , had droped them in their holes, unfortunatly one of them whent in side ways and the sparplug gap closed completely causing that misfire. I personaly use a peace of vaccume hose to put them down the holes and start them. I'm sure you probably do the same thing except these time. Any way just a tought, Happy holydays from Baja. I am a subcriber and would like your feedback . Thanks.
Hi Miguel, i would say your 100% right. I don't recommend doing that unless your very experienced. I developed i feeling for it over the years. But if your not carefull it can go wrong easely. So the safest way is the way you described. 👍
@@Diagnosedan Thank you for your quick feed back. I guess you have developed accuracy withs spark plugs as you mentioned. I've only been a tech for 30 years, and I still prefer not to take any chances . Thanks.
When doing a cylinder leakdown test I like to remove the cooling system pressure cap just in case there is a leak in the cooling system.That can cause a hose or radiator to fail due to the pressure introduced into the cooling system.Also if the engine is hot and it is a leak into the cooling system , be aware that scalding hot coolant go flying and cause injury...
As usual a superb tutorial and excellent video. However....I feel I must add a test to this particular scenario. Visual check of the Spark plugs. I think it’s pertinent to show the viewers the tips of the plugs. We can read the plug and get an idea of what is going on in the cylinder. Imagine the ceramic around the electrode had cracked and broken off, leaving a section behind. If we put this plug into the other cylinder there is a chance of further damage. This broken piece in my scenario could of caused the damage to the valve. In any case Dan you have my vote. I watch all of your videos and share them with my three work colleagues. I didn’t want to be to analytical about your process, I have learned so much from you sharing your experiences. I thank you very much.
Brilliant how you break down something that could be so complex and difficult into easy steps that anyone with a little car knowledge could understand. Bravo! This makes me curious. When doing the compression test fuel is still going inside the cylinder. Is this fuel-rich air being exhausted completely by the movement of the piston or is some remaining in the cylinder and if so, can it create any problems?
It is easier to diagnose when you know how many amps are consumed by the starter for each compression in the cylinder. Please check if it is possible in the I-TESTER device that you demonstrated in the video, can you also check current per cylinder and not just voltage per cylinder
I would have enjoyed it more if you used your optical inspection camera to look at that exhaust valve to see if it was crud that prevented proper setting or was the valve damaged and needed replacing...Lots of valve problems can be fixed by cleaning externally using chemicals or in worst cases removing the head for a valve job.
First I got to tell you you are the best teacher I ever know thank you for sharing all your videos I learn a lot Watching them the way you teach is very easy to understand and it’s very easy the professional way to diagnose thank you one more time for all your time and dedication to share your brilliant knowledge God bless you I just have a one question about the tool you use for the relative compression test is that tool works for heavy duty Diesel engines too ???? I work on heavy duty diesel truck I also work on cars but I would like to know if that tool would work on the heavy duty diesel engines too One more time thank you and God bless you...
Dan your videos are excellent, you give very detailed explanation on the subject matter with nothing left out. here's my 🖐 High five The moment I watched your first video I noticed the attention to detail...
xD xD XD the only way to fix those Euro cars, Dan....NO SHIRT REQUIRED hahaha!That educational simulation software is so cool...maybe I will try to get the high score ;)
Please do but your not allowed to use duct tape, and you can do it indoors so you can even play it shirtless in the winter😉 Ha ha, thanks for stopping by!
Love your Video's!💪
Topless, the way to get answers and air out the nipples. lol
hehe Ivan he did a great job being you at the end of this video! Anyway Ivan I ready like your videos too, along Eric-O, Keith.
But, Dan can you speak Russian? :)
@@StarTrekforever3698 me to, they are my teachers, Blessing
As I told you before there is no one who explains better than you, anyone with a little mechanical inclination can save thousands of dollars .... man two thumbs up ......
Thanks! Thats a great comment!👍👍
I am a motor mechanic in Australia and use your diagnostic to teach our students you should be very proud off your self Well Dan
I am 110% sure Dan new it was a compression issue from the minute he first cranked the engine, what I love about his videos, he walks us through step by step to ensure your average audience is able to follow. Watching your other videos, it is very rare to find a mechanic with such in-depth electrical and electronic experience. very professional and is able to pass the knowledge on in a clear manner. very impressed all the way from Canada.
Legend! Just when I thought he was done with the diagnosis,he goes that extra mile.the man is good!
I would say the Man is God
Great
Who is disliking these videos?? Parts Changers I suspect.
Again very well executed and I never knew about that relative compression tester. I have always thought you had to have a scope for that. where you find these random tools I never heard of before is beyond me!!
Scotty's fans
@@jaspernemesio3816 Scotty can be meh but he doesn't spread false information and I've learned plenty from him. He's just cocky
My name is Jonathan from Nigeria have watched and follow many master of tech online you are second to none
I could hear from the first crank it wasn't going to end well for the customer. Great video for breaking down the entire procedure, Dan!
Indeed!😉
I worked in a Subaru shop... I am used to low compression I can hear from 20 paces and two rotaions :D
Hey Dan, i have to 'HAND' it to you on this diagnostic job, 🙂 ,you could have put a big Baloon on the end of the exhaust pipe, but the the workshop item fitted like a 'GLOVE' Lol !! i knew some one who fitted an old worn out 'HOT WATER BOTTLE' on the end of the exhaust and used strong cable tie's, and it went the size of a bouncy castle before it blew up!! Thanks for all the great Video's, will check out the software too, keep doing more please, Bless 😇
Hi Dan, thought I would like to tell you the way I was taught to do this diagnosis back in the 80's. Missfire check step 1. Compression test. Step 2 on confirmed low compression pour a little engine oil into the cylinder, carry out compression test again. Results. If an increase in compression it is piston ring or piston related. The oil seals the rings temporarily. If no change it is a valve and nearly always an exhaust valve with a V shaped burnt chunk out of it. It was more common those days because no one was even running on unleaded fuel and I remember the first advert for a car with a cat fitted and we laughed about how were you supposed to find a garage that sold unleaded fuel to put in it.
We are getting old😂😂
You're not only a genius but also a kind-hearted person.
Good video for those that don't know. One small thing I think you should add. Tell people never to just drop spark plugs into their holes as they can sometimes hit the side as they fall in and alter the spark gap. I've just found your channel thanks to South Main Auto, and remember if he can do it, you can do it. ;-)
I've been using a magnetic plug socket for 50 years. From the old Porsche VW days. Treasure my old tools.
Wow, I'm impressed, I was sure the rings were bad, but you proved me wrong. I used to be a mechanic in the late 60's and early 70's, it was easy back then, points, plugs, condenser, and that was your tuneup. I'm lost under the hood now, but am learning, thanks to men like you who are willing to share with us. Thanks again.
Points🤔........I can't remember when i changed those. But for sure a long time ago😂
Great video for diagnosing a misfire for learners. Any experienced mechanic would call compression without testing anything just from the engine cranking sound. The drop test would confirm the low cylinder without any need to swap plugs and coils. The tool looks awesome for those without a scope but remember it is a relative compression test and not an actual compression test.
In the test shown we seen 1 very low and 2 low and 1 high. You will always see a high after the very low cylinder as the crank spins faster on the cylinder with very low comp and then draws more amps on the starter with the next cylinder in firing order that has compression. It is likely that the other 3 cylinders are equal in comp but may or may not be low also.
Good point. I will remember that. Still, this guy is awesome, isn't he?
@@jaspernemesio3816 he is
Came across this channel this week, what a gift from diagnose heaven
i can not stop watching your videos my language so weak but you can easily connect the information thank you with all my heart
Ha ha ha😉💪👍
This channel has grown a lot in four years and I've learned a lot thanks you diagnose dan.
dan is irreplaceable technician , dan you made me love my job even more every time you share your video , thanks for sharing great topics as usual .
Thats great you enjoy your work, you spend the biggest part of your life working!
This guy man, Diagnose Dan is the best comedian and mechanic ever! I was one of those so-called mechanics that went "yep"!
With those relative compression tests, it's worth remembering that a bad reading is always followed by an unusually high one, because of the motor speeding up while it pushes the bad cylinder. So, the 3 good cylinders probably have better balance than it seems on the tester. The sticking valve is the only issue.
Thanks for the comment!
Dan ,Ivan is a good guy. He helped a lot of people. Lots of mechanics out there just swap parts and leave the problem. That simulation game only have sketchy circuit diagrams. No info on break out box. No way to locate components .
You have given me another reason to seriously consider investing in a storage scope. I'm more in the electronic line where a good scope is almost a no-brainer (I already have an analog scope), but it seems rather obvious that you could measure the same voltage ripple on your 12V battery while cranking, and look for the same regular shape to the ripple. If every 3rd dip is a bit more shallow, you know there is a compression issue.
Thanks for watching and you won't regret getting a scope!
Dan you are a genius the way you explain the fault and the way you go about it I love your videos can't stop watching just shows you what main dealers are like
Excellent video!! Great teaching skills, and I knew there must have been an Ivan connection. He uses a Foxelli headlamp which I started using. At 69 years I need light to c. It's rechargeable and I have two. Never leave home without it. And I need you tube handy, so that I have DD with me all the time.
Mine is also rechargeable, your still young Bill😉
Wow!!! What an awesome video, and a great way to explain diagnosis. I'm late to this channel, but I hope there are many more videos to come!!
Dan your videos are so precise and clear. truly enjoy watching and learning from you. Thanks much for sharing your knowledge and time. The car didn't sound too good on cranking start-up. Am I correct in hearing that? Thanks again for the video. 👍
Yes you could already hear it when it was cranking😉
Hi Engineer Dan:
I am From Baghdad - Iraq.
Thank you for this wonderful channel. You taught me a lot about the correct way of diagnosis.. and this video isvery very nice. Thank you from the bottom of my heart.
Thank you for sharing this Dan. Mr. O. recommended watching you. He was right.
Thanks for watching my video's it's appreciated!
Dan you are the best automotive diagnostic channel on youtube.
That's very interesting Dan. I might just have to play around with it. But Ivan will be the high score for sure! Great work showing us and explaining the misfire. The ending was spot on!
Please do and try to beat the rest of us!
Excellent video. I learned to use a chopstick in spark plug hole to find TDC at an Asian auto repair shop in 1988. For carboned up (not burnt) valves on a dodge 5.2 V8 a person can use a cordless drill on valve stem with head on the engine after removing keepers and spring. chuck it tight and move up and down to lap in place. a little more work with OHC mazda which would necessitate cam removal.
LMAO !! the PHAD impression was spot on, as a do it yourselfer i can relate to his channel.
Maybe a Scanner Danner, Eric O. or ETCG video in the near future.
Keep up the good work!
Ha ha thanks🤣🤣👍👍
Super Imitation of Ivan...Next get Jeep hat, don't shave for week ,and be Eric O "Welcome back viewers "
I had suspicions when I heard the first crank. Well done Dan! Loved your Ivan impersonation!
Thanks for the video. I have been going through diagnose dan withdrawals
Now you have something to watch!🤣🤣
Every time I watch one of your videos you blow my mind with your diagnostic skills. Thank you
Dan, just found your channel and I have been binge watching. You are a great teacher and I appreciate all your hard work. Keep the videos coming. Awesome job. Thank you. 👍👍
Very nice process of elimination! Thanks for the links! Great impersonation!
Thanks Thomas, Exovcds impersonation next time?😉
The way of diagnose are more than 100% accuracy and have concrete reason telling customer car problem, very appreciate this learning video!
Nice Job Dan..Congratulations on making 10K subscribers..keep them coming!
Thanks that's thoughtfull of you!😉
You are an absolute star Dan. I have watched a couple of your videos and now I’m a subscriber. You are teaching me more in 30 seconds than anybody can in 30 weeks. 👍
Brilliant video as normal Dan 👨🎓
Thanks!😉
Danny boy I have your respect mam I am taking my introduction to engine repair and in class we are using electude and since you said you have helped them make their program Im proud
Cool software! You can hear from the first time you cranked the car that the rc failed. I'm surprised you didn't put a transducer in there. Great work bud 💪 oh man poor Ivan 🤣
I was thinking about the transducer, but i'm getting a new one i'll be doing a video on!😉
DiagnoseDan I just got pico WPS 500 transducer. Love it. Please next time don’t forget DOBRODOŠLI LOL 😁😁😁. Great job cheers 👍👍
@@kyhomegarage3430 ha ha so many languages could do a full video on just the intro if i need to cover them all. But you are very welcome indeed,great to have you here. Yes the pico pressure transducer is great. Getting the latest Gmto model in the beginning of next year, i can't wait!
@@kyhomegarage3430 Zdravo
zeke112964 pozdrav kolega😁
Hi, I am Mahadev from India. I watching your videos I appreciate your step by step diagnosis to reach the actual root cause. All videos are knowledgeable and helpful. I like very much. Thank you.
You can hear the compression loss when it was being started
Your right!👍
@@Diagnosedan Thanks for teaching us....love your videos!!! I know you can fix that car in 2 minutes, but you spend 30 minutes for the beginners.
I have over 25 years experience on the automobile industry and I got to say that DiagnoseDan is very good for the experience ones and the new people that want to get into the industry. Thank you god bless you and your family
Very funny, my favorite Russian, Ivan. Glad to have him in the USA.
Yes, he is amazing
@@Diagnosedan i cant get a legend with the wiring diagram DD why?(on the electude simulator)
Following you for the past 4 years. I really appreciate your time giving as all the knowledge and experience by dealing, You are the best, thank you so much, regards from dubai
Dan, you need to take a vacation/business trip to NYC. I've met Eric O. (who is afraid of flying and has never been on an airplane), Keith , and Ivan and you should hook up with these guys for a couple of days. Keith has so much business he could offload some if it to you and you could pay for your airplane ticket and housing by just diagnosing Keith's overflow cars for a couple of days. The three musketeers plus the Dutch boy storming the cars of NYC. I'm sure that Eric, Ivan and Keith are dying to meet you. Actually, I'm certain of it. You should contact these three guys and come up with a time and place to meet up in New York City. Could get a couple of laugh out loud videos out of this meet up. Love the no shirt Ivan fake video. Damn Russian thinks he's Putin.
Thanks for the Great comment, we all know eachother. Keith is coming this way soon.
I bought the electude simulator and is far from reality. Besides that the sound doesn't work, the fault codes is the simulator are very strange defined, a lean condition on o2 sensor will be like " o2 sensor circuit low voltage ", and so on.
@@JoitaConstantin On my computer the sound Works fine and O2 sensor signal low is the perfect code for a lean mixture. Because the O2 sensor voltage is low when the mixture is lean. It doesn't say mixture lean because there are other reasons that could make the sensor signal low like a short to ground. If you want to learn more about this watch my video on O2 sensors.😊
@@Diagnosedan I know that a low voltage means a lean condition, but I never heard about that code description ( I am not a mechanic, so just based on my few checks on family and friends cars ). Now I am facing another issue: water temp sensor in the simulator is changing it's value from 90 to 100 degrees and back constantly when rpm is above 3000 in 2 seconds. New sensor, wiring, computer changed just because is a simulator and I have nothing to lose, and nothing changed. The initial problem was different, and even that one wasn't fixed. I don't know, but this thing is very tricky. Sorry for bringing this to you channel.
@@JoitaConstantin No problem but believe me the Simulator Works amazing and is designed and tested by the best in the industry.
It is recommended to get the Electude Essentials to get a perfect explanation of all Systems. Only if your interested of course😊
Thanks for the Knowledge. This is better than wasting all my time going to a boring class. Very detailed and even went and beyond to make his diagnose show us evidence of the problem. Thanks you are a great instructor.
Dear Dan, no disrespect intended Sir, but did I just see you drop spark plugs into the spark plug well... You are so methodical and explain everything so meticulously, that it shocked me seeing you do that... Knowing that millions of people are watching and learning from you Sir, please show them the correct way to "install" plugs and not just dropping them into the hole. One could easily bend the gap or worse, break off the tip and then have that bounce around the combustion chamber causing all kinds of problems.. We are all in awe of you and am myself an avid viewer and subscriber. So please, emphasize proper working methods such as finger tightening things to get them going first before putting a wrench on it, installing plugs with a rubber pipe or something similar instead of dropping them, torque wrenching with proper torque specs etc etc... please know that no disrespect or ill meaning is intended with this message. You are an excellent teacher and are/will be emulated, so I'm sure you want all your subscribers to be the best of the best, so they fix it right the first time...
Thanks for the feedback, and thanks for watching my video's it's appreciated!👍😊
🙄not true
Your way of diagnosis is very reasonable, educative and informative.
I think that one thumbs down must be from Ivan !!! :-)
Ha ha ha No i don't think so🤣🤣 Must be a unhappy customer with a bad Mazda engine🤣🤣
lol I'm sure there's plenty of them about 😂😂👍🏻
No I gave 10 thumbs up for no shirt lol!!
@@PineHollowAutoDiagnostics 😘
That’s the type of tool review the diyer needs, one that is geared for us to fix our vechiles with tools we can afford and actually work without going to tech schools to show us how to use them! Diagnos Dan did it again, you are in the top 3 of my favorites,thanks
Thank you for the kind words!
Starting the thread and tightening those plugs with the battery ratchet made me cringe
Been doing it for years, No problems as long as you know what your doing
at least its not an impact!
3/8 makita impact, 1/4 milwaukee. I do it all day long. Aint no thing!
wow love that little i-tester so fast you could have had that mazda diagnosed in under 5 minutes thanks dan .
Yes, faster than a battery test!
At 6 foot 6 I put everything on the lift . lol
I guess that's about 2metres your even taller than me!😉
The whole Earth bro.. you are different.. I see Gods glory through your works..
hi from 76 year old ex Donnington GT championship outright winner . your presentations are superb .. amazingly easy to follow .. SORT OF. Not your fault, I am electronically a bit of a thicko. I have been beaten by a 1.9 VW tdi 1996 Seat Alhambra motor with an elusive hiccup misfire .which sometimes occurs and when it decides to happen it is almost exactly at 1900 rpm . getting brave I took it up to twice that rpm and the hiccup misfire occurred with more violence .. Hiccup is my best description of a complete split second hesitation . lower the rpm and all is well increase the rpm and again smooth running . not much help for you to get your head around . I sold it on at a discount price and it never missed a beat on the new owners test drive . Sometimes it will go for days without a problem . and then when it decides to resurrect it is a real pain .
Net ingilizce aksanınla sen bir harikasın dostum Motorlu araçlar Teknolojisi Öğretmeniyim senden ders almak bir keyif benim için .
Nice relative compression tool demo. The cranking sound was so uneven it sounds like a dead hole, but could not hear the other weak ones. The cams looked pretty dry, like there is lack of oil.
I like to hand-thread in the plugs, then finish off with a wrench.
Yes, Pine Hollow. Been there, seen that.
The best mechanic channel for learning !!
Yes! Leakdown tester! Love that tool. Quickest way to confirm your suspisions, and to determine if it's time for a new car or not.
Most of my colleagues hate leakdown tests, but in most cases, it takes less time to do than if you spend a lot of time complaining about it.
My first leakdown test was on an Audi 2.0 TFSI with 50k km on it, and no oil change. It had air leaks from the exhaust valves, intake valves and piston rings.
The customer tried to find someone to blame for his lack of maintenance, so he claimed that we never explained to him how important it is to change the oil.. :P
Exactly!
each time I watch one of your videos I learn more sand more...please continue to make the videos this clear as always.I mean showing exactly where you connect electric probes and stuff.
Good video! Just something to add: to an experienced Tech, you can just listen to the pitch the engine cranking & determine you have low compression on one or more cylinders. Also a vacuum guage will be a much more economical way of determining the condition of the engine. I love buying tools, but alot of times it seems like a great idea, but in reality, there are older proven methods.
@ 23:00 Differential pressure gauge(s). We use this tool on piston powered airplanes. You just had to be careful with the TDC, otherwise the propeller would whip around. Sometimes you could see a slight change on the gauge by wiggling the propeller, causing the rings to seat a little better.
By far the best mechanic known on earth.
Dan I'm even telling not co-workers about your channel, we are mobile techs for a nationwide auto body repair chain, we do the things they can't like diag, frame swaps and disassembly down to the structure of the car for them to do the repairs them we come back and reassemble sometimes two months later lol. We have all the factory software and such but boy supplied with a scope, there's been a few situations where i know i needed it but didn't have access, also space is very limited in our work vans and everything gets rattled and bounced around coz we drive a lot, do you have a recommendation for a at least a two channel scope that's very portable and tough with a screen with recording features? Maybe even file sharing coz we have to document every little detail dealing with auto insurance companies. I am watching all your videos and what your capable of is amazing and you make it look easy for sure. For me this is best training I've found and I've been doing icar and am tesla certified already. I will be a long time subscriber and can't wait for new videos
On the older Honda engines you can just pop the upstream O2 from the header to test for airflow there. Honda changed the design of their newer engines to position the exhaust header in the rear, not as easily reached. I'm sure a lot of engines are still positioning the O2 bung in the front. If there were any question you could just cut off a compression tester hose at that point, get a cigar and start blowing tons of smoke down the cylinder. It will give you some visual confirmation of leaks thru the exhaust valves coming out thru the O2 bung hole.
Someone once told me you could hold a dollar bill on the exhaust to catch the intake stroke on a burned valve and it the tailpipe will suck the dollar in and spit it out. This didn't work for me when I tried it. The dollar caught on fire immediately.
Compression tester is amazing. I take it works by sensing the current draw of the starter as each compression stroke is reached , quite amazing
Hi Dan, did you have the CylinderHead and Valves rebuilt or did scrap the Mazda?
The iTester is cool but for $500.00 I’ll stick with my cheap scope and an amp clamp. I want to thank you for your videos, I’ve
learned so much from you and others I just wish I had You Tube 50 years ago. I’ve watched so much Scanner Danner that I noticed the compression problem when you first cranked it, I’m sure you also did. Thanks again.
Wow Dan, always 'on point' with your lectures ...... I'm always time poor, so this is really time well spent , thank you!
that impression was so good, you nailed it, great video as always
Thanks Chris👍
wow. now that's how u fix cars. after your video, now i know how to find a miss fire on my jeep. please keep it up !
Thanks💪👍
Another fine video Dan. Had a distinct sound during the cranking that made me lean towards compression. And you look just like Ivan too.
Yes, you were able to hear it!👍😉💪
Probably one of the smartest brainiest man on the auto mechanical scene on TH-cam 👌
Great video. What's your fix for customers that aren't firing on all of their own cylinders????
Excellent diagnosis and explanation as always. However, I need to rain on your parade. Dropping a spark plug onto a well leaves the door open for the electrode to be damaged. Running the plug in the bore with an air ratchet that was not started by hand opens the door for a stripped plug and or cylinder head.
Great video Dan! I must admit I surprised when you disconnected the coils with the engine running. That can damage the ecm. I can't tell you how many ecm's I have seen with a popped driver for this very reason. I seen hundreds of GM ecm's with a popped driver from techs unplugging the IAC module while engine was running. Take care and thanks for sharing your knowledge and experience.
how to gain more knowledge; step 1 watch diag dan's channel kids, I am Audi dealer tech with 14 years of exp. and this man as razor sharp my boy,
Thank you Steve 👍
Another great video Dan but since i dropped the screw from the top of a spark plug right after i fitted the head on n had to take the head off again i always block the spark plug holes every time i take a plug out
Smart thinking!
cheers mate I had no choice (i was very poor then still poor now lol) but on £10 a week wages n wanting a 6 cylinder ford zodiac every penny counted n even i had no Idea at all about engines it was either fix it myself or no car, thank God them days cars where very easy to repair with Lots of access round the engine to work things we all do for what u like when young TC mate
Humor,fun and knowledge = Dan’s channel. Great work! 👍
Thank you!😉
What is 2d2e code
Wow.. without a doubt, the most informative 28m Video on car misfires ever.. Thank you Dan.👍👍
Dan that was truly hysterical. What a great sense of humor. Great stuff
Thanks!😉
I have to say that you explain the diagnosis so well. Many times so many details are left out manuals and videos that could really be useful, which you include in your videos. Making a part changing situation into an actual repair. Incredible job and video. Thank you so much for your time and posting.
Step by step efficient diagnostic paths. Dan you are a great teacher. Thanks for all you do!
Good evening Mr. Dan. I've ejoyed your videos very mutch, & have learned a few things here and there specialy the way you explain things. How ever, I did noticed one thing, when you were swaping plugs . Please note I 'm wrinting this coment with all due respect to you, and others. I noticed that you droped the plugs into their holes and then used your cordless wrench on them with out making sure that they were started correctly. One ot the local shops here in Baja , called me one day to diagnose a misfire problem they were having with a vehicle similar to the one you are working with. the misfire started after they had done a tune up. Long story short the tech that installed the spark plugs , had droped them in their holes, unfortunatly one of them whent in side ways and the sparplug gap closed completely causing that misfire. I personaly use a peace of vaccume hose to put them down the holes and start them. I'm sure you probably do the same thing except these time. Any way just a tought, Happy holydays from Baja. I am a subcriber and would like your feedback . Thanks.
Hi Miguel, i would say your 100% right. I don't recommend doing that unless your very experienced. I developed i feeling for it over the years. But if your not carefull it can go wrong easely. So the safest way is the way you described. 👍
@@Diagnosedan Thank you for your quick feed back. I guess you have developed accuracy withs spark plugs as you mentioned. I've only been a tech for 30 years, and I still prefer not to take any chances . Thanks.
When doing a cylinder leakdown test I like to remove the cooling system pressure cap just in case there is a leak in the cooling system.That can cause a hose or radiator to fail due to the pressure introduced into the cooling system.Also if the engine is hot and it is a leak into the cooling system , be aware that scalding hot coolant go flying and cause injury...
As usual a superb tutorial and excellent video. However....I feel I must add a test to this particular scenario.
Visual check of the Spark plugs. I think it’s pertinent to show the viewers the tips of the plugs. We can read the plug and get an idea of what is going on in the cylinder.
Imagine the ceramic around the electrode had cracked and broken off, leaving a section behind. If we put this plug into the other cylinder there is a chance of further damage. This broken piece in my scenario could of caused the damage to the valve.
In any case Dan you have my vote. I watch all of your videos and share them with my three work colleagues. I didn’t want to be to analytical about your process, I have learned so much from you sharing your experiences. I thank you very much.
Brilliant how you break down something that could be so complex and difficult into easy steps that anyone with a little car knowledge could understand. Bravo!
This makes me curious. When doing the compression test fuel is still going inside the cylinder. Is this fuel-rich air being exhausted completely by the movement of the piston or is some remaining in the cylinder and if so, can it create any problems?
Nice bonus footage.😊 Please do an impression of Keith Defazio.
Wish I had a workshop like that !!! Happy for you Dan !
Thanks!😊
It is easier to diagnose when you know how many amps are consumed by the starter for each compression in the cylinder. Please check if it is possible in the I-TESTER device that you demonstrated in the video, can you also check current per cylinder and not just voltage per cylinder
I would have enjoyed it more if you used your optical inspection camera to look at that exhaust valve to see if it was crud that prevented proper setting or was the valve damaged and needed replacing...Lots of valve problems can be fixed by cleaning externally using chemicals or in worst cases removing the head for a valve job.
Hi Dan can you please make a video based on how to perform a compression test properly as I am not sure how to do it. I would kindly appreciate it.
Hi
Respected Sir you are so good and cool in explaining very slowly that can understand each and every word.
GOD BLESS YOU😊
I
Excellent video thanks a lot Dan. but you missed the fuel test. Can you explain how to do that? I really appreciated.
In another video Emad👍
First I got to tell you you are the best teacher I ever know thank you for sharing all your videos I learn a lot Watching them the way you teach is very easy to understand and it’s very easy the professional way to diagnose thank you one more time for all your time and dedication to share your brilliant knowledge God bless you
I just have a one question about the tool you use for the relative compression test is that tool works for heavy duty Diesel engines too ????
I work on heavy duty diesel truck I also work on cars but I would like to know if that tool would work on the heavy duty diesel engines too
One more time thank you and God bless you...
Dan your videos are excellent, you give very detailed explanation on the subject matter with nothing left out.
here's my 🖐 High five
The moment I watched your first video I noticed the attention to detail...
High five✋😉