Audi stranded at the Roadside, crank / no start

In this video we diagnose a 2017 Audi A6 3.0 biturbo 3.0 TDI that was towed in by the Roadside assistance.
It stalled and is now a crank / no start.
Let's diagnose it together!
For Topdon producs used in this video;
US link: www.topdon.us/...
Discount Code for Phoenix Max:
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European contact: [e-mail]
For business inquiries ; [e-mail] (Not for technical questions)

[@privateer0561]

Just imagine if all mechanics were this good and honest.

[@armandonika]

You cant imagine that because most of the clients are not like this one 😉 ( every client deserves their mechanic)

[@grzegorz16100]

They are honest but not that good.

[@Tubecraft1]

We could all be a lot better if Europe wasn’t such an unhelpful area at forcing the manufacturers to give us proper wiring information and systems education. The Americans have Mitchel wiring diagrams-what do we have -Autodata that is (a)unviably priced for most small garages and (b) often incomplete and unreliable on individual cars and doesn’t even cover many common cars and not all systems on the ones it does cover. The trade is a shambles and it’s the public that are suffering because of the poor governance of manufacturers

[@abigfatelf_ttv3438]

The world could not afford every mechanic to be this good

[@aliasgertayabali5260]

The crooked ones don't like techs like Dan and plus they show it on video. How can they make money??These dishonest ones cause the honest and knowledgeable ones not to charge fairly .

[@asderd2464]

cranking over without glowplug and that broken injector. you guys should appreciate dan for doing that because that makes a huge mess to clean up. just for showing you.

[@michaelgleason4791]

There's far better ways to do this.

[@ExternalInputs]

He cranked it for way longer than necessary to confirm it was a bad injector.

[@Danidasanic]

@@michaelgleason4791 how ? btw , if the injector are plugged to test the injectors , why there isn't any diesel coming out from all cylinders ?

[@martinleska4292]

@@DanidasanicOther 5 injectors cant spray any fuel because there is low pressure on rail. Diesel smoke comes from faulty cylinder is only diesel puddle at the bottom of cylinder 2 sprayed through glowplug hole

[@ferrumignis]

@@Danidasanic There was diesel coming out of all the cylinders, look closer. Obviously far more from cylinder 2.

[@ClubXrock]

The roadside person did a good job regardless, as he would be limited to data and equipment and the luxury of a workshop environment. Trying to diagnose a no start while the customer is hovering and constantly questioning what's wrong with the car, is quite challenging. I also do roadside assistance

[@abdul-kabiralegbe5660]

👌

[@arjanvanraaij8440]

the Dutch AA ANWB is well equiped and educated.

[@Jeffschmidt1984]

@@arjanvanraaij8440 Yes we are 😁

[@Diagnosedan]

I agree and have great respect for the roadside assistance, they do amazing things with limited resources

[@russell5414]

Should he not have noticed the obvious hydraulic lock issue.

[@alandjbaker]

Always look forward to the next episode of diagnose Dan!

[@Bizija123]

they don't come fast enough lol

[@Lambros_Stefaneas]

​@@Bizija123 That's why you're looking forward for the next episode 😇.

[@alandjbaker]

Quality over quantity! That is why every episode is fascinating and captivating.

[@Diagnosedan]

That's great to hear!

[@hoedenbesteller]

Man, you are the GOAT of diagnostics in cars. I really love how you attack the issue and get to the RCA.

[@Diagnosedan]

Thank you

[@herrkiwi3110]

A often overlooked fault on a modern common rail diesel , quite often leading to fuel rail pressure sensor replacement or high pressure pump. Great content as always Dan. I am a roadside tech and people don't understand how hard it is to diagnose certain faults roadside. I would have thought they would have noticed the odd cranking sound but beside a busy road it can be impossible to hear those things sometimes. We all get caught out from time to time.

[@legioner9]

True.

[@koeniglicher]

Relative compression test done on starter current (as shown by Dan) but with crank shaft sensor signal as a reference to get cyl #1 and taking into account firing order of the engine would show the drastic imbalance on the screen of a diagnostics tool that can be read no matter how noisy the environment is. And would have identified the disfunctional cylinder with much less work on disassembly. This is like instrument flight instead of visual flight. In addition, notice the heavy physical distortions and shaking that this engine makes due to the open injector. From the video alone, it hurts my senses, when the cranking is done over and over on this engine. I'm with you: diagnostics at the road side is way more difficult, due to weather (rain, cold) and outside noise and limited gear, tools and parts, that can be taken to the place. But to identify the misfiring injector, block it with a small screw (a nice trick shown by Dan!), document the work, and have the client continue his (hopefully short) journey on 5 cylinders of this V6 TDI engine would have been possible at the roadside. And then to ask the client to drive to a workshop at the next possible option in time, like the next day.

[@jackiemay9471]

@@koeniglicher yes a quick and simple check non-invasive and gives direction i was going to say myself

[@clintonhenwood960]

True

[@herrkiwi3110]

@@koeniglicher So if he continued to drive it with oil dilution and it ran a bearing or worse yet "took off" the roadside tech would still have got the blame. He was in a no win situation. We do not carry a scope or have the ability to do a relative compression test. We all probably heard it was cranking odd and to be honest he should have just stopped there and got it towed to a workshop for further diagnosis end of story. People need to distinguish between emergency breakdown service and mobile workshop ! Two completely different things. People always look for someone else to pay for there repairs these day's , sadly my job has more become "what am I going to get blamed for" rather than "what can I do to help". 🙂

[@binagarten4667]

Wish we had a mechanic half as decent as you. You Sir are a legend!

[@Diagnosedan]

Thank you

[@mr_nice.]

The mere fact that you bother to call the customer for information and guidance AND ask permition to do work on their property, makes you a top notch mechanic. AND a good business man! Trust me, not all mechanics call their customers, not even for the basics. 👍👍👍

[@Diagnosedan]

We got the approval to check the other injectors👍

[@armyvet92]

It is always going to be a GREAT DAY when we get a new video from Dan the Man !!

[@Diagnosedan]

Thank you

[@benjaminrich9396]

Be interesting to see if that number 2 conrod didn't get slightly bent with the hydrolocking. Maybe now do a mechanical compression test on all cylinders, or even re-run the relative compression test, this time looking for lower on the now fixed cylinder. If he's got away with no harm done, lucky man. :)

[@MC-Racing]

would be interesting 🙂

[@StationGarageSt]

my thinking too. poor rod, I was wincing with pain seeing the amp current peak out!

[@MC-Racing]

@@StationGarageSt one thing is the starter, but this happened while driving 😳

[@StationGarageSt]

@@MC-Racing even more wincing? I'm blaming Mr McPiezo-Crystalface No2 for letting the side down. All his mates stayed true to the cause. He Spoils the party 'cos he just won't shut up!

[@Diagnosedan]

There is no need to do a test again when the engine is running even on all cylinders

[@99andrianmonk]

Nice job, Dan. Despite being misdirected by the road side assistant and not having the trouble code to verify supposed issue you correctly diagnosed the real problem and fixed the vehicle with with very little effort. Clearly a testament to your outstanding skills.

[@davyarthurs]

Fuel pressure was low I guess due to the leaky injector so not all bad. But defo always start your way. Don’t be led down a rabbit hole by someone else’s info. But yep agree with you

[@madds6678]

No guess the injector was leaking a common problem on common rail systems not that hard to diagnose

[@Diagnosedan]

Thanks!

[@austenj4539]

I feel so much better that I managed with Dan to diagnose this issue! Seriously though, a very useful video showing a range of diagnostics to include simply listening to the poor crank noise as a crude, but effective, lead to suggesting that one of the cylinders had a fuel issue. Doesn't always need a scan tool to guide us. Great stuff.

[@UrbanGrafixltd]

The sound is familiar, and i'm sure the mechanic on the side of the road thought the same, but to pinpoint the issue exactly is impossible without tools, a fuel issue can be caused by a wide range of components, thinking it is a fuel issue because it sounds like it wants to start but can't is just not that useful. i think using a scope to test battery drain when there's an injector stuck open is genius!

[@Diagnosedan]

Thanks for your help, i couldn't have done it without you!😉

[@raedghaith4778]

@@Diagnosedan you did it without him!

[@jctaiter]

A skip like that in a diesel could be different things. Bent valve, hole in piston, but in the common rail diesel, always start with fuel. It's not going to be a spark plug

[@djosbun]

Using the screw to block the fuel injector was a superb move, Dan. Well done!

[@taunus1990]

I was going to say the same. Simple but effective

[@ppal64]

Did he take it out?

[@koeniglicher]

@@ppal64 Yes, he did after installing the new injector.

[@danthecarman8440]

A ball bearing is good too.

[@Diagnosedan]

Old trick😉 although there are blanks available to close the rail

[@oldschool1993]

I wish all the other guys who do auto repair would watch Dan, he is very clear and straight to the point and does not try to be a comedian or mumble on a bunch of extra nonsense and opinions or talk in endless cliche's.

[@arjanvanraaij8440]

Or the one screaming in to the camera.

[@madds6678]

Are you cussing south main auto or scanner danner? How dare you.

[@Diagnosedan]

Thanks for the positive comment its appriciated 👍

[@pilskadden]

Excellent diagnosis as always. I bet most other shops would have fired up the parts cannon, starting with the high pressure fuel pump.

[@kain0m]

Thr amount of people that I have seen throwing thousands in parts at such simple issues, especially in a DYI setting, is painful. Especially if you know that more often than not they end up causing more damage by working without the necessary cleanliness for these injection systems...

[@madds6678]

Err no we wouldn’t

[@Diagnosedan]

Thanks for watching

[@letmein2460]

From hearing it crank I thought it had a dead cylinder with low compression but your relative compression test was great and it told you the exact opposite and once I saw the voltage spike I knew it was a flooded cylinder. Installing the screw was brilliant! Really great job!

[@Diagnosedan]

You are right in most cases we see a cilinder with less compression not more!

[@karirautio]

I think it was a current spike, not voltage spike.

[@erasmmuss]

This guy is just amazing, I learned so much from watching his videos especially on diesels

[@Diagnosedan]

Thanks for watching

[@pedromanuelmadeiramartins6188]

That happened to me on a 2013 Q7 with same engine! In my case two injectors stuck open. Excellent idea with the small screw!😍 Thanks for your videos! I'm always learning! Best regards

[@Diagnosedan]

Thanks Pedro!

[@jctaiter]

Thats programmed into the ecu as a Deep clean fuel flush crankcase regen

[@martinsgusevs9184]

Very nice video for beginners, I realized what's the problem when you where cranking engine in first time. I love to see more videos from you with mind blowing electrical faults but I know we don't get them every day, and video making take a lot of your personal time. So thank you for what you do 👍

[@Diagnosedan]

Thanks!

[@dustcommander100]

That was an amazing diagnosis. I would never put a screw in to block the fuel on my own. After seeing you do it successfully, I would do so.

[@Diagnosedan]

Have faith😉

[@Unknown_Ooh]

I see your problem, it's an Audi. Props to the roadside guy for actually telling you what the fault code was. I've had customers bring in cars and tell me there was a list of codes and they read online somewhere to reset the codes and obviously didn't fix their problem and they didn't bother taking note of what codes were present. Then you gotta cross your fingers and do a hard reset on the battery then cycle the ignition a few times and hope the codes come back. Sometimes my snap on zeus tablet can recover recently cleared codes but they are only a starting point in diagnosing a crank no start.

[@Diagnosedan]

Thanks for the comment 👍

[@mi60100]

Nice fix as always dan can i suggest ball bearing ball to block the injector i use them and work perfect greetings from bulgaria 😁

[@Diagnosedan]

That's also a good idea, but a screw is easy to find

[@cherylfarrell1638]

Excellent diagnosis and repair

[@Garth2011]

Way to be Dan. Following logic with a few scanners and scopes vs. guessing and moving forward. Confirming the diagnosis was very cool by blocking off the fuel line on #2. At first, when you ran the starter I thoughtr for sure it had a mechanical failure, a valve or connecting rod. I even was thinking the high pressure fuel pump lobe or rod might have been damaged causing the high amp draw on the starter/battery (if thats how the hipress fuel pump operated). Being a 2017, I'd likely go with 5 other injectors but due to their cost, if they tested okay, I'd run them again. Good fix Dan.

[@Diagnosedan]

We got the approval to test the other injectors 👍

[@iosefoyagomate5647]

Dan has all the high-tech equipment added to his knowledge and experience. What a guy. Dan the Man for the job.

[@markt5426]

Thanks Dan, really enjoyed the video watching you diagnosing the problem. When I heard the first start up to confirm the customer's compliant, I heard the mis-beat of the engine. Only when you took out the glow plug and it was wet with fuel I knew then where it was heading. But as always good tips regarding low/high pressure systems. Thanks again Dan. 👍👍

[@Diagnosedan]

Thanks Mark, great to hear that you liked the video

[@keepthinking2666]

I love your channel. It's so nice seeing somebody. That knows how to work on a vehicle correctly. Wish you were in the USA I. Have a 2013 A8L tfsi 3.0 ctub the car has extended crank before turning over and done times when I press start the electric all goes crazy and pops every module

[@jeremymartin980]

I would add that it might be prudent to take a sample of the fuel and open up the fuel filter to eliminate possible contamination that could have caused the injector to fail. Love your videos, always look forward to a new one. Brave man removing the glow pugs!

[@Diagnosedan]

The washer between the injector and the cilinderhead gets crushed over time and the injector starts to get a little play. This causes vibrations and that causes the injector to fail. The new injector has an updated washer.

[@robertbawden1702]

very clever now u can travel too western Australia and fiks my a6c6 quatro. runs ok then when u stop it stalls and won't start. costing me more in tow fees than it cost to buy car. 560 k from nearest audi specialist so l im left to my own devices. cheers, sir. grate help.

[@PineHollowAutoDiagnostics]

Great diag and repair, Dan! Amazing that the Audi injector replacement is so much easier than some of the modern gasoline GDI cars we have over here in the US :) Engine sounds very happy!

[@Diagnosedan]

The diesel injectors on this model were not that bad indeed but i can assure you that isnt always the case! On some models they can become VERY stuck!

[@TyroneMaye]

My spouse 07 Audi Q7 sounds similar to this vehicle within this here video. i plan to do compression test of all 6 cylinders....an from watching this gave me more insight to also check the fuel injectors ......thank you for the tips an explaining things clearly..

[@pcgrey69]

That's an awesome video Dan. I wonder how many garages would have gone straight for the high pressure pump

[@Diagnosedan]

On this engine the hpfp is not an easy job! I'm glad it was an injector🤣

[@pcgrey69]

@@Diagnosedan a couple of weeks after watching this my stepson had poor starting on his Skoda Rapid 1.4tdi. It turned out to be contaminated fuel however despite a clean tank and filter the problem continued. Fearing it was an injector issue similar to this it had to go to the dealer. I was blown away when the fixed it with this Volkswagen additive part number G001790M3 which they used after guided fault finding. Symptom poor starting and running when cold, no fault code stored

[@joeyf504327]

this is the first time I've ever seen a simple and easy repair on a german car. I can't believe how easy it was to replace a high pressure diesel injector on this!

[@intelligentauto737]

I would have checked for metallic contamination prior to replacing that injector. Bosch CP4 pumps are known for breaking up and contaminating the fuel rails with tiny metallic particles

[@albertovicenteanibalalvare8043]

para cuando un video???

[@Diagnosedan]

Not in this case, the seal between the cilinderhead and the injector crushes over time. This causes the injector to get some room to move and vibrate. This damages the injectors. I've removed the other injectors and tested them. No other injector needed to be replaced. One injector seal failed and we were just in time to safe that injector.

[@igotaction]

I am beginning to love Mondays now thanks to Diagnose Dan!!!!

[@Diagnosedan]

🤣🤣👍

[@joshua.sanchez9689]

You are definitely 💯 the best mechanic 👨‍🔧 and really professional

[@Dbdiagnosticsltd]

I have been watching your videos for a while now, love the videos and your level of ability! As soon as you cranked this engine and I heard the stutter on cranking I knew it was an injector, seen it many times before on the mercedes om651 engines over my time at mercedes. Good content as always

[@Diagnosedan]

Thanks for the positive feedback

[@alexleroy6640]

Great diagnostic interpretation.

[@miljanmipidakic4975]

Very good job Dan removing the glow plugs! As a worker who works with injectors many mechanics bring in injectors for inspection to find out that fault,you did it yourself! That's so good! This happens because of dirty, sticky fuel in injectors, the "hydraulics" as we call them, get stuck and then all the pressure just passes through it. Have you checked the fuel filter to see if it has small shiny aluminum parts, so maybe the pump has started to fail?

[@SeanBZA]

Also can occur if the owner put truck or agricultural diesel in, because that is high sulphur, and not great for the precision parts of the fuel system. Similar if you run illuminating paraffin or heating oil, or recycled cooking oil that has been sold as biodiesel.

[@Diagnosedan]

No i didn't check because i know why these injectors fail.

[@miljanmipidakic4975]

@@Diagnosedan Congratulations, you understand everything from mechanics to electricity, it's so nice to learn from people like you

[@davidweaver4702]

Ironically, that is exactly the same thing that happened to us in July. One garage told us the high pressure fuel pump had gone and would cost us £4000 to fix. A specialist VAGTechnic, said, get it to us, as I will save you a lot of momy, as you don't need all that work. They had it over the weekend, and found the same as you. So one new injector, coded plus an oil and filter change and she is fine again. Great to see honest mechanics in action. Keep up the good work 👏

[@stevepalmer4072]

Excellent diagnosis as always Dan.

[@Diagnosedan]

Thanks Steve

[@tomastichy2549]

Audi was always famous for their 5 cyl engines 🙂

[@arjanvanraaij8440]

the sound of a 5 cilinder diesel is great.

[@Diagnosedan]

🤣🤣👍

[@DeepakKumar-lv4te]

also in the VW 2.5L transporter/multivan , although I thought it was a Volvo block (with a VW head).

[@uploadJ]

300TD of Mercedes too.

[@classicrestouk]

Great video. I've seen this problem on 2 different vehicles before. No one believed me the first time - a vauxhall/Opel Astra 1.7cdti (Z17Dt) with a failed injector not allowing it to start. The second time, 2 failed injectors on a Mercedes w211 with an OM648. I blanked off 1 injector, but quickly realised there were more injectors failed and ended up blanking another off to get it to run.

[@Diagnosedan]

🤣 you need alot of screws

[@classicrestouk]

@@Diagnosedan I modified a VW sump nut to screw into where the injector would be.

[@repairingmaster]

Hello, Dan. Do you think it could be useful to measure injector current and voltage in order to capture that injector being stuck? Because there are oscilloscopes that can show this type of event. Nice job, again!

[@Diagnosedan]

It could have been diagnosed in many different ways that lead to the same outcome

[@paul2482]

Awesome video, I'll have to remember that trick with the screw!

[@markblundell9461]

Thanks for another great video Dan. I always enjoy your content.👍

[@Diagnosedan]

Thank you Mark

[@johnjones4825]

When I first heard that stumbling crank, I was like NO! Don't crank anymore, something is either mechanically jamming up, or there is a fluid of some kind in there...

[@Diagnosedan]

Smart thinking

[@wuss999]

Audi = Always under diagnostic inspection

[@pmipetercnc8543]

I love of way how you explain, thank you from NYC

[@shanelloyd8366]

Hey Dan. Thanks for yet another great video with a common issue and the diagnosis fix was perfect. I have a small ball bearing for blocking off the High-pressure pipe but I must say the screw Idea is also very interesting. Dans the Man Can He Fix It Yes He Can. ;). as always your Videos are appreciated.

[@sammoore5011]

Do you do the same as Dan did with the ball bearing ( i know Dan used a screw instead)and reconnect the fuel line to injector and reconnect the wiring connector to injector when you do the test.cheers.

[@Diagnosedan]

Never tried a ball bearing but i guess it works, i think a screw is more randomly available.

[@catalinvoiculescu5327]

Yes,you are a very good proffesional.Your judge is very clear and simple,bassed on many years of experience.That's how it should be in all car dealerships, not replacing parts on guesswork.All the best !!!

[@Diagnosedan]

Thanks!

[@attisko555]

You should teach! Your explanations are clear and logical. Great job!

[@markplenty2631]

Amazing! I was saying injector fault as soon as I saw the oscilloscope reading! I love watching, thanks for sharing

[@Diagnosedan]

Great!

[@mikechiodetti4482]

Thankyou for the tech tip with the screw. Good fix and video.

[@Diagnosedan]

My pleasure

[@mikeberry304]

Top diagnosis Dan , no parts cannon with you , good old common rail junk again , so many electronic parts cause so many faults , well done sir , like the scree tip , easier to find than the ball bearing 🤗🤗🤗🤗🤗💪💪💪💪👍👍👍👍👍

[@Diagnosedan]

Yes i screw is always available

[@isalmankhan1]

WoW DiagnoseDan Fixed it Again😍 Perfecto👌 Love the plan of attack it was really difficult to diagnose it properly without the part's canon aimed😍 Thanks for sharing Bro, Stay Safe👍

[@Diagnosedan]

Thank you!

[@andrewseamaster]

What a star, and complete service! I need to move to where you are so that my cars are always safe.

[@Diagnosedan]

🤣🤣👍

[@johnbee7729]

I sure like how you are able to work successfully on diesel and gas/petrol vehicles. Here in Canada a number of our shops will not work on both.

[@notrut]

That's a disgrace ... get onto terrible Trudeau ...

[@MsDenisejoyce]

Geweldig hoor wat je doet . I found you by some.other diagnose people and i found out your from the Netherlands the xountey i am born. But living in North America for the last 11 years.. love to follow you!!!!

[@javierc2726]

Good work Don't forget the oil 'chains' 😀

[@MartinDundulis]

You are a god damn legend. Thanks to you I realised I`m still learning. Also after 2 hours of swearing your video just helped me to diagnose and fix the car. !!!!!!!

[@adrianvalbuena8158]

Thanks for the tip about blocking the high pressure fuel lines!!!!

[@Diagnosedan]

My pleasure

[@hummerro]

You're gold. Pure genius!

[@johnbob4711]

Thank you, great Video. You're Lucky, glow plugs often break when you're trying to remove them on this engine's.

[@Diagnosedan]

Fortunately they didnt😁

[@darylwalford8697]

Great video again, the problem was obvious when the correct diagnostic/thought process was used, too easy to get caught up looking for electrical faults due to fault codes when the problem was mechanical, well done Dan.

[@BertGraef]

these are actually very high pressure 20,000 psi piezo- quartz electric injectors controlled by the ECU

[@Diagnosedan]

Thanks!

[@iancroston1928]

love you Dan, my wife on the other hand, not so much. She always scurries off to phone someone when you post a new video ;-) I got that diagnosis right as soon as I heard it turning over and the low rail pressure was mentioned. Thanks (Y)

[@Diagnosedan]

🤣🤣🤣 tell your wife i'm sorry for borrowing you sometimes to help me diagnose the problem 😉

[@MechanicTechnicianRepair]

Experience diagnosis master mi respect para ustes

[@D989501L]

Nice to see you back. Regards Richard 🇬🇧

[@Diagnosedan]

Thanks Richard

[@TheDerekeder]

Beautiful! What a privilege to learn from a master.

[@Diagnosedan]

Thanks Derek

[@tapiwarwizi8461]

best diesel engine mechanic on KZbin PERIOD

[@raviautoscanning]

listening to the cranking pattern is the first diagnostic step. you done it well. thank you for great infor.

[@Diagnosedan]

Thank you

[@regcrompton2006]

Loved the video, this is what append to my 2.2 diesel RAV4 , all injectors were change and all was good and the car drives like new and I love it again even though it was not a cheep fix at £300 each injector 😢

[@VAGCOMM]

Nice work,Dan! You fix it again!!!

[@Diagnosedan]

We did😉

[@idiotbox8291]

Fixed It Again! You sir are a genius!

[@Diagnosedan]

Thanks!

[@keithcannon8193]

Dan, what a superb diagnosis, I was convinced it was low compression listening to the cranking, fantastic 👏

[@Diagnosedan]

It was the opposite, high compression 😁😉

[@themetalmicky]

what a cleaver man, a pure master at his trade

[@Diagnosedan]

Thanks!!!

[@goober650NX]

Brilliant, just brilliant. You have a gift for communication.

[@Diagnosedan]

Thank you

[@TricksoftheTradeAutoRepairs]

I love watching your diagnose videos. You are so clear and thorough with the explanations and the causes. I also love the way you show the scope data so we can see and not only hear the problem. I am fortunate to work in a shop where we take pictures and sometimes video for the customers to see. I imagine the customers being greatful that they too have an understanding of why we are replacing whatever we recommend. On another note, I was wondering if you have made a video of the relearn process for the Nissan throttle bodys and maybe show on a scope, if possible, as to why they do not relearn and continue to have a surging idle. I've tried many different methods from different videos on the web but none seem to work. Thanks again for all the great diagnosis.

[@legioner9]

You are very gifted from God, Dan. Very, very gifted. Keep up the great work. I really admire your way of solving problems.

[@Diagnosedan]

Thank you very much

[@AC-db4ek]

V6 TDI, sounds nice

[@richardjones3112]

Brilliant diagnosis.

[@Diagnosedan]

Thanks!

[@razvan4motion]

nice Video. i had no ideea the injector can be stuck open and then leak all the pressure.thank you for the video.

[@antonisantonis655]

Dan, you are the best mechanic, should you also check before buying the new injector if the PCM has a problem and sends all the time power to that injector ( or if there is a short in the wires and the injector positive wire gets all the time power ), you know just measure even with a multimeter if there is continuous power on the positive wire of the injector ( and not pulses, which is what should be) when cranking the engine, I know this is something very very very difficult to happen but, just to be 100% sure, again, an awesome video. of course, maybe you have done this and just cut it out from the video when you edit it

[@Diagnosedan]

Electrical issues like a short circuit most of the time can't be cleared from memory or come back right away. Remember we had none faultcodes

[@ophirb25]

Excellent one. I must say I thought the same as you after the relative compression test. In other words, I like the way you think. 👑👑👑 King of diagnosis....

[@Diagnosedan]

Great!

[@ophirb25]

@@Diagnosedan Hey Dan, did you have formal education like automotive engineering or it is something you picked up by yourself? Want to find more similarities between us...😀

[@keyboardheroism]

Live data logging the other cylinders may not work because I believe the v6 tdis only use two glow plugs with pressure sensoring. At that point the most cost effective option is to do an ohms reading on each injector body. These injectors are robust, most likely issue is injector #2 picked up some debris during a filter change. Causing internal locking damage. Very expensive to do all 6, especially when they charge a core for replacing each one.. which I find a bit of a scam. The peizo crystals are only able to be calibrated once in the bosch factory. Making these injectors non-rebuildable from factory... Id just ride it out as is. I REALLY appreciate your vids and would love an opportunity to apprentice under a master like you. I ❤ German engineering!!!

[@gregculverwell]

Excellent diagnosis as usual. Much appreciated.

[@Diagnosedan]

Thanks Greg

[@jesusescamilla1864]

Wow thank you so much for feed us, great diagnostic

[@Diagnosedan]

Thank you

[@danielmorris6523]

I heard the way it cranked and thought it sounded strange but because you didn't seem worried I thought it must be normal. Great job.

[@Diagnosedan]

I'm never worried unless its my own car🤣🤣🤣

[@danielmorris6523]

@@Diagnosedan LOL 🤣

[@caraudiosolutions]

Best mechanic auto electrician.

[@trickyfocus]

Love it when you get the oscilloscope out ...... i need one of them in my life

[@Infiniti25]

Digital oscilloscope will be useful and usable. I think getting myself an analogue oscilloscope for electronics use is what has hindered my progress so unless you have someone assisting in first use then go digital.

[@Diagnosedan]

Essential tool for a professional technician

[@pavelppp888]

Again, amazing reverse engineering skills demonstrated!

[@Diagnosedan]

Thanks for watching!!

[@danthemann6565]

Dan, excellent tip on watching current draw during the crank cycle. Ask you correctly indicated, the starter was doing more work while cranking one of the cylinders during compression. E x I = P or W, the more work you do, the more current you draw from the power supply. Measuring current can give you a vast amount of information. Thank you for the video excellent job.

[@Diagnosedan]

Thanks!

[@garrylovett7421]

It shows that listening should be part of the diagnosis. Many engine faults have distinctive sounds. Thanks fro sharing.

[@Diagnosedan]

You are right, use all your senses

[@arthurlull8681]

Great Intro. Never change it.

[@chrisgregory2269]

Another great diagnosis Dan

[@Diagnosedan]

Thank you

[@benardblessing1201]

You are very good electrician I follow you every day 🇬🇭🇬🇭

[@fordfocusgarage2083]

Thank you very much. It was a successful diagnosis.👍

[@deniscudahy4549]

Great job again,had an idea it was a faulty injector 👍👍👍

[@Diagnosedan]

Great!

[@alibatebi2161]

WOW amazing. thanks for sharing this .

[@Diagnosedan]

My pleasure

[@villainsneverdie5160]

I always learn new stuff here thanks Dan. God bless you