Mazda 6 down on power, no boost at lower rpm.

[@DavemcGuinness]

I can't understand why lads map out parts of a system and delete software fault codes, to "fix " a symptom without addressing the cause of the symptom ( which are usually easy fixed).... the customer drives off then unknowing to the fact the problem is still there and more than likely doing further damage but he's happy cos there no fault lights on.....false economy imo....not to mention the headaches it causes for the man (like yourself) trying to get things right.......I reckon that's the main reason these Mazda's have such a bad reputation...... another great vid Peter, fair play.

[@timbo19751975]

Because they have no idea what they are doing and deleting the error table stops any come back to them

[@kennedysgarage3281]

Some very good points there lads. The underlying problem is still there and going to effect the car down the road 😬😬😬

[@danielpantazescu7720]

That was a tough one, i would've never thought about that and chase the my tail trying to diagnose the small turbocharger malfunctioning... I'm impressed!

[@kennedysgarage3281]

It can be a lot harder when the software has been modified. Nothing is as expected 😬😬😬

[@conorcousins27]

I served my time on mazda 20 years ago..they were great cars back then..i wouldnt touch one with a barge pole now..

[@kennedysgarage3281]

Hey Conor, quite a few people feel the same. Isn’t it a pity the way it went for Mazda 🤷🏼‍♂️🤷🏼‍♂️🤷🏼‍♂️

[@padraigryan2588]

Another great and informative video Peter....my 2014 Mazda 6 has my heart broken with the oil dilution issue....even after the injector washers have been changed....might pay you a visit 😊

[@kennedysgarage3281]

No bother Paudraig, just search Kennedys garage.ie 😉👍👍

[@stephenmartinloughran-zv3cu]

You do a fantastic job I have a mazda 6 2012 diesel and it's great to see you working on them

[@kennedysgarage3281]

Thanks Stephen, I think they are a great car if maintained right 😉🙏🙏🙏

[@detectnician]

Great video Peter. My car is like a new car after you, thanks!!

[@kennedysgarage3281]

That’s fantastic, I really do think that they are a great car once fixed correctly. Thanks for letting me know and I’m glad you enjoyed the video 🙏🙏🙏

[@bastogne315]

Ahh thats a lovely comment ❤❤

[@normanstephens5391]

Well done Sherlock. Your the man. Cheers. 👍👍

[@kennedysgarage3281]

On these yokes with edited software you don’t know what is rightfully and what is wrong. So sometimes you have to take a shot in the dark and hope for the best 😬😬😬

[@mechtechmechanical1571]

great info

[@MrNiceGuy94]

Low budget fix 😅😅 Delete the DTCs so it won't trigger a check engine light. Anyways, great vid Peter. To be honest I personally wouldn't bother with it unless the original software isn't reinstated as you can't know what else was modified in the software and later on it can cause you a lot of headaches and you can't give warranty on things like this. Keep up the good work 😉✋

[@kennedysgarage3281]

Hey MrNiceGuy, I do very much agree. The best move for this chap would be to reinstate a good DPF and the original software. At least at that point you’d be able to fix it correctly. It is a pity that it was messed with in the first place, but as you know it is quite a common occurrence. Your going great on these Mazdas too, well done mate 💪💪

[@johnjames01]

Peter, every time I see one of your videos about Mazda's, I'm relieved I wasn't talked into getting the diesel instead of the petrol when I got my Mazda 3 in 2017. 114k kms up on her now, serviced every 15k kms and still going strong. Love the videos and the diagnostics.

[@bastogne315]

I've a16 3.❤ Missus used to work for Mazda HQ. Warned me to stay away from the diesels. Misselling diesels to lads doing low mileage was a big problem.

[@johnjames01]

@@bastogne315 Crazy isn't it. In Ireland, hardly any petrols were sold in 2017 because of the push on diesel at the time. It's crazy.

[@kennedysgarage3281]

Wait until ye see the backlash coming on misselling EV’s in around 3 years or so 😂😂😂😂😂

[@chrism5433]

2006 Mazda 3 .2.3 . Fantastic car .

[@bastogne315]

​@chrism5433 The road tax though😮

[@slaterRIP]

Great video P, it looks like cowboy job with dpf...you can delete dpf mechanically and program out BUT all sensors should be in place and be able to read all and fault codes will be on if the programming job done is proper - you just erase block with dpf burnouts as not needed and place solid low value on the filter, thats it rest must stay as it is plus of course only dpf is out and cat conv MUST stay...looks like proper cowboy job

[@kennedysgarage3281]

I absolutely agree, any job done depends on the person doing it. Dpf deletes are sometimes a necessity in order to avoid huge expensive repairs. Well done if you do them right 👏👏👏

[@BIE-bi3rb]

Another brilliant video Peter. Thankfully I don't see too many of these Mazda's in the work shop but do see a lot of Renaults with the turbo exhaust pressure pipe blocked. I've had great success in clearing them out by using the wire from an old window regulator. Cut a bit off that has a ferrule on the end and put that in the drill chuck. Looking forward to the next video.

[@kennedysgarage3281]

I have tried so many bits and types of cable it isn’t funny. I always find that the cable just ravels up when it hits a hard piece of carbon. I’ll try again though just to see. Thanks mate 🙏🙏

[@samostraser8924]

Hello, great that you gave luck with wire, could you please tell me more about, mybe photo of such wire. Thank you! Regards, Samo

[@kennedysgarage3281]

@@samostraser8924 window regulator wire is the exact same as a bicycle brake cable 😉

[@samostraser8924]

@@kennedysgarage3281 Aha same as bike brake cable. I think in my case this will not work, i tried all kind of wires and carbon is to hard. I will now trie using some chemical or mybe trie to heat the pipe little more ;), i dont like to burn whole car until is still working :p. Peter do you have any trick in your pocket, how to remove this pipe without removing bunch of other parts 🤔?

[@kennedysgarage3281]

@@samostraser8924 unfortunately not but I do have a video on it. But the heat really does work well and is easier than you’d think 🤔

[@bastogne315]

Mazda❤❤❤ same colour as mine. Soul red or in japanese..dragons blood. That has the same interior layout as the 3...cept i put android auto in mine.

[@kennedysgarage3281]

It is a really nice colour when polished up, that name Dragons Blood sounds really cool too 😎😎

[@samostraser8924]

Hello Peter, you are realy full of ideas. I must also clean this pipe, but like you said, with wire is very hard, i tried already and no luck 🥴. I am little scary to playing with fire around 😱, but what can i do 🙄. What is the easiest way for replacing this pipe? What are the symptoms of blocked hose, because car runs fine even if blocked (checked with vacuum pump)? Regards, Samo

[@kennedysgarage3281]

The last one I have seen blocked was give Dpf soot accumulation faults but I’ve also had underboost and airflow faults.

[@samostraser8924]

@@kennedysgarage3281 Thank you Peter. What are the symptoms of worn camshaft. I still did not look under valve cover and almost 260.000km :p.

[@kennedysgarage3281]

@@samostraser8924 a slightly engine shudder or misfire at 1500 to 2000 rpm and a Dpf fault a few hundred miles later 😉

[@martinfinbarscully4924]

If you work your magic on these 2.2d engines is it worth keeping them as the miles pile on or should you get rid of it?

[@kennedysgarage3281]

Hey Martin, once these engines are fixed correctly they should be as good as they were day. My advice to any mazda owner that comes to me is to repair them and then drive them for the next 100,000 kms. And it is working 🙂🙂

[@GraditelMacedonia]

Maybe same sensor is used for vacuum, and here on Mazda is opposite wiring for pressure.

[@kennedysgarage3281]

A brake booster pressure sensor is used to monitor vacuum pump performance. That is totally separate here in Ireland, are you in Macedonia??

[@AndreiHanceariuc]

Hello! I have a mazda 6 2014 120k miles. I have read a lot about this engine since I bought it. Do I have to worry about the injectors, seals, sump, camshaft, chain or carbon buildup? I have no issue with it at the moment but I do expect low oil pressure message anytime. Do you think it is late on this mileage or should I have it checked? I have full service on mazda (every 10, 15k oil changes) and mainly done on motorway. I plan to do the sump and seals but not sure if there is a way to detect if the exhaust camshaft is worn. Thank you and very helpful informations

[@kennedysgarage3281]

Oil strainer and oil pump chain is well worth doing first as if the chain breaks it can cause big damage. But the exhaust camshaft and injector was could be done down the road. Just because it only causes Dpf or running problems. Does that make sense??

[@marion1600]

Ecu was asking for boost so it wasn't in limp mode created by some input problem (backpressure sensor signal for example) right? Then how does cleaning that pipe make a difference? Doesn't make sense. Also bicycle brake cable on a drill work excellent for cleaning those pipes even for the ones that have sharp bends in it.

[@kennedysgarage3281]

Hi Marion, to be honest once the software has been tampered with it generally doesn’t make sense as to what the engine ECU wants or doesn’t want. Original software and fixing a car as it should be fixed is the best approach in my opinion. As for the bicycle cable, I just cannot ever get it to get through hard carbon blockages. But well done mate if it works for you 💪💪💪

[@bobbymike]

Because there are also ghost faults that mean nothing so u be checking them for absolutely no reason it then gets confusing and costly for the customer, its best to erase them all so ur not chasing ur tail and only deal with the genuine fault that 9 times out of ten will return thereby saving time fixing the actual fault charging the customer less time.......35 years in the trade it alwsys works so thats why.......ignorance is bliss isnt it...

[@kennedysgarage3281]

Hey Bobby, it can sometimes be a bit of a minefield. Nearly everyone in this trade try their best but unfortunately only experience can teach these kinda skills

[@Swwils]

If exhaust was that sooty you should check the boost pressure sensor itself, its most likely caked.

[@kennedysgarage3281]

On our assessment we gather as much evidence as possible to fix the car. And the intake manifold and MAP sensor are among the first items checked. But it was cleaned prior to me 😉👍👍👍

[@Swwils]

​@@kennedysgarage3281top stuff, no ideas why dealer mechanics can't do anything the ODB doesn't say.

[@kennedysgarage3281]

@@Swwils 🤷🏼‍♂️😂😂😂

[@johnp6636]

Small turbo at fault? Rivet fallen off the wastegate arm?

[@kennedysgarage3281]

Nope 🙃🙃

[@kennedysgarage3281]

Good guess though

[@arsautos9797]

Bypass flap rivet not broken?

[@kennedysgarage3281]

Nope, silly software 🤷🏼‍♂️🤷🏼‍♂️

[@TheKevyd123]

Could this blockage lead to dpf faults?

[@kennedysgarage3281]

Absolutely, a Dpf is a self cleaning filter & all you need to do is figure out why it isn’t doing it. Most people just think that they need to be only cleaned 🤷🏼‍♂️🤷🏼‍♂️

[@user-od3rl5mc]

Guitar wire is what he uses i believe

[@kennedysgarage3281]

I have tried all and cannot get any good of them. The ravel up if too long and won’t go in far enough if too short, I just find heat and compressed air far easier 🤷🏼‍♂️🤷🏼‍♂️

[@bastogne315]

Yeah those obd readers tell lies all the time. Mine is asleep 100% for sure...or could be the ecu is lying to the obd..

[@kennedysgarage3281]

That is right, cheaper code readers can give wrong information. This can be very misleading at times 😬😬😬

[@bastogne315]

In fairness Peter you really go the extra mile to find a problem. Took mine to a garage to diagnose the enginecfault i have. Stuck it on a diagnostic, took sparks out and gave it back. They couldn't find anything in the 2 hours they spent on it. Didnt even charge much. But really no investigation..certainly didnt do any of the stuff you do .

[@kennedysgarage3281]

I actually didn’t really know where to go on this one. Simply best of being customer aware, would he want to spend money on the time needed to locate the issue. We sell time not problem fixing, but hopefully get the problem fixed in the allocated time frame. If that makes sense 🤷🏼‍♂️🤷🏼‍♂️

[@bastogne315]

No one can argue with you there Peter. Great show as usual.😊

[@chrism5433]

Must be illegal to delete the dpf?

[@kennedysgarage3281]

Not at this point in time 😬😬

[@matthewwilliams4774]

I need you to come to to mine to sort my car out

[@kennedysgarage3281]

Where are you based mate ???

[@matthewwilliams4774]

@kennedysgarage3281 unfortunately devon no where near you my friend I need someone talented like u to have a look lol

[@kennedysgarage3281]

@@matthewwilliams4774 good luck with it mate, just ask if you need a advice 😉👍👍👍

[@damienkearns9922]

What a right mess Peter…why do people insist on taking the long short cut?! The fundamental issue as you found was the blocked pipe and all would have been well but instead destroy a DPF, rewrite car code and who knows what other units are now under strain as a result. What a load of right decent sh1.tehawking…fair pay to you for even entertaining the customer..it reminds me of a person buying a juicy steak from the local butcher..burning the hell out of it and then telling the butcher the next day that the steak was tough! 🫣🤪

[@bastogne315]

Or sticking the steak in yhe freezer for a month😂

[@kennedysgarage3281]

The funny thing about it is that most people and mechanics just don’t know how this stuff works. So if you don’t know, then advise dpd removal well it makes the problem go away. It’s funny the things you see done to cars 🤷🏼‍♂️😂😂😂

[@Ilyas-rn2sn]

What pipe is it exactly that was blocked as I’m having a similar issue, low rpm no boost then shoots off

[@kennedysgarage3281]

@@Ilyas-rn2sn the pipe for exhaust pressure sensor A, it is to the rear of the rocker. There are 2 pressure sensors, it is the one on the gearbox side of the engine with only 1 pipe 👍