Why Mazda Engines FAIL

[@laszlogeleta6009]

Depending from the owner, this engine never changed the oil on time, that is why dirty the engine and the parts are done.Nothing wrong with my 2.5l MZR 320000km and running new with the Castrol Titanium synthetic oil from the new time to now. 9years old now 👍😊🏆

[@nowukkas2472]

My 2.3 L3 is at 394,000km. 340,000 of those in the last 12 years. No leaks, no smoke. Oil changes at every 10,000km.

[@autobotavengerfireballxl5339]

I have 2 2.0s both run strong and have 230 k

[@mzr3553]

@@nowukkas2472 my mps have 245000km on.not using oil still running good.i service car every 5000km

[@VincentSmith_apk]

Bought mine new in 2009, not a single issue :-D. Just over 170,000 km, couldn't be any happier

[@ksw8934]

every engine is that ugly from the inside that has more than 30000km on it

[@JF-xq6fr]

At least the water pump is on the OUTSIDE.

[@speedkar99]

I know right!!

[@rondhole]

@@speedkar99 It is a halfway to Toyota or Honda engine quality.

[@whatsstefon]

At least the water pump is still made of alloy and not plastic.

[@jtomtl]

Nissan......VQ series water pump built in......

[@jackanderson2773]

@@rondhole Try above Lexus reliability currently . Its overall the most reliable brand in the world right now . Mazda .

[@algorithmae]

Also kinda unfair to Ford/Mazda how this failure was caused by improper maintenance and not a flawed design like the title suggests

[@jerrycann6374]

plus it may have 500,000 miles on it

[@speedkar99]

Agreed, though these engines are quite oil sensitive.

[@ahuramazda323]

@@speedkar99 all engines are oil sensitive, they all need proper lubrication or problems occur.

[@SpaceShipDeathstar]

Every modern engine is oil sensitive comparing it to crude or mineral oil engines running at 400rpm max producing 1.4 Hp per liter displacement. Modern VW are the absolut worst. What is normally considered high Oil consumption as standard from the factory.

[@visakhrajendran741]

@@ahuramazda323 true but this video from carwow shows how much better honda engines are even when oil starved kzbin.info/www/bejne/sKrIm4dqi7Wtoqc

[@stephengreen3566]

These engines are really reliable. You just have to change the oil and keep the level up. These engines have been known to last 300,000 miles with the proper maintenance.

[@usmcraid5332]

100% agree

[@nordic5490]

Here in Oz, taxis running the Barra engine go more than 1M kkms, and the engine is then still sought after.

[@leumamk5259]

Those engines are not reliable at all. A few years ago I was looking for a Mazda 3 first generation and basically all of those that I found for sale had major engine and/or transmission problems. The majority with overheated engines.

[@JohnSmith-oh9ux]

@@leumamk5259 Very reliable. Unless owner is moron and cheapskate...

[@leumamk5259]

@@JohnSmith-oh9ux Well, then, according to you, the majority of first gen Mazda 3 owners are morons...

[@analogidc1394]

I love how mentions which rag came from which family member. lol

[@Cys62]

Hm... i noticed this too... but why isnt any of the rag belongs to him.. is all his used clothings just too good to be used as rags....

[@leseanwalston7916]

@@Cys62 Duh!..😂😂 if he doing MAJORITY the hardwork in his Home he SHOULD BE able use whoever sht he wants if they're living off him..🤷🏿‍♂️

[@jimscimonetti1457]

This guy makes the best videos. I always wait to hear what family members personal belongings he will use to clean up oil & grease. Using his wife’s tooth brush….Hahahahahah!!!! This guy is great! LOL

[@OutsideTheTargetDemographic]

"This crusty sock came from my father's, brother's, nephew's, cousin's, former roommate."

[@illbebeck8655]

@@Cys62 probably these are not old clothes, he just steals stuff from his family members

[@devonnewest7990]

I cant believe all the work you do to bring us these videos. We appreciate more than you know. (And u handle those toothbrushes like a BOSS! 💪)

[@speedkar99]

I'm glad you appreciate my work. It sure takes alot to procure engines and produce these videos

[@waelmohammed7119]

@@speedkar99 👍👍❤️❤️👍👍👍🌷🌷

[@operator8014]

I bet his teeth are all shiny chrome.

[@tim4u2uTube]

You know your engine mechanics hands down. impressive.

[@algorithmae]

Timing is set by removing a small screw on the side of the block, and installing a peg that contacts the crankshaft and stops it from turning once it reaches TDC. I do wish they would have keyed the crank though :/

[@speedkar99]

Yeah I did see that bolt near the crank.

[@paulmills7366]

@@speedkar99 There are special service tools to lock the cams and crank to set the timing. With the tools it's relatively simple.

[@Vintaronica]

The whole point of a floating pulley is faster assembly in the production line.

[@doriangraczyk]

Anyone knows if it is possible to add more power to these engine ex changing cylinder bearings and adding a turbo?

[@esmechos]

This is a great engine! I had one (2.0L) run to 267K miles with just minor problems until the manual transmission went. Only notable issue was the dynamic intake butterfly valves would loosen and flutter.

[@milosozegovic6980]

Did you experience something like sttutering between 2500 - 3500 rpm with moderate throttle given? I do experience this, have the same engine and Im teying to narrow down the problem

[@esmechos]

@@milosozegovic6980 I no longer have the car, that was a couple years ago. I don't recall an issue such as you're describing. A clicking noise could be heard if the valves are loose or worn. Did you try cleaning the MAF sensor?

[@crow_2k11beatsbydre8]

How many times did you change your clutch on the Mazda 3?

[@johnbarbely9169]

@@crow_2k11beatsbydre8 once

[@toguro1009]

366K miles on my 2010 Mazda 6 w/ the 2.5 engine. Port injection keeps valves clean. Oil maintenance is very important. Great tear down of this Mazda engine, thank you.

[@rhino6285]

I own since new a 2009 Mazda3 with the 2.3 and have 213,000 miles on it. Zero oil consumption and runs like a champ.

[@miguelare3]

7:20 those socks are good at soaking up liquids lol

[@speedkar99]

Excellent for the job!

[@KarriKoivusalo]

I rebuilt an L3 just like this in 2020, made the exact same noise too. Spun bearing. The oil in the sump was good, but there was thick black gunk in the oil passages, probably had missed some oil change intervals. Nice, smooth engines with nice power but god damn the design team should be gathered up and decimated just as a warning. I swear it was designed to drive anyone trying to repair it mad on purpose.

[@leekumiega9268]

Rod bearings and cam phaser issues are some of many reasons that Mazda separated from FORD and made their own design Skyactive engine and transmissions

[@ProjectFairmont]

Who’s to say these later engines won’t have issues. The MZR is a Mazda motor.

[@ProjectFairmont]

@@leekumiega9268 negative, it was designed by Mazda.

[@petrnemecek4379]

@@leekumiega9268 Engine block is Ford, Mazda designed different head for their cars.

[@djhrjeiwhri]

Note that only miata which didnt have any rebadged product with ford, is bullet proof reliable. So i think ford is the culprit.

[@syloui]

No, the NC miata uses the MZR too. Mazda designed the MZR originally, and Ford had and still has license to use it, they just change their own things on it like the head design, and pair it with shitty transmissions like the Power Shift

[@bhoclatebhipbookie]

Honestly mazda has their shit together and is one of the most reliable brands out there. Id put the blame on not on time maintenance

[@emotionz3]

True, these are actually incredibly reliable engines even when they’re turbocharged. My problem with the duratec is internal maintenance sucks if you have to do it. The Zetec was much easier to work on, though it required more maintenance (timing belt, etc)

[@hussamjamil4980]

Dude....there is no markings or keys for timing on any single piece.......do you have any idea, how much time one needs to get the timing correct without any reference point? parts and reliability maybe cheap and durable, but that is where cost cuttings go.....the labour costs (aka. time) for a shop to time the engine correctly is where most of the expense is going.

[@Saeed26434]

Buddy Mazda cars are trash but not as bad as chevy or kia but still bad. try working on an of there parts and you will also notice theyre designs are even worse to work on

[@bhoclatebhipbookie]

@@hussamjamil4980 i worked at a shop and had mazdas come in for maintenance and i personally never had an issue working on them. Also if you look at reliability ratings theyre one of the top performers

[@danven1256]

To time that engine you need 2 special tools. One bar that locks the camshafts and 1 pin that rests up against a flat surface on the crankshaft. Always replace the diamond impregnated washers at the camshafts and on both sides of the crank sprocket. And don't try to time it without the tools because you will regret it. A important note though is never remove the crank bolt until it's timed at top dead center. It's easy to bend valves. As far as this crank journal failure goes 99.9% of the time it's lack of maintenance..

[@johnhayes3314]

And a special tool to hold the crank pulley while torquing. The lack of keyway is soooo stupid

[@BlackCubone]

My 08 Mazda 3 has been rocking so far. Fingers crossed!

[@speedkar99]

How many km?

[@BlackCubone]

@@speedkar99 225k+ km. I got it with around 210k km.

[@applepoop10]

What did you do make the engine last a long time?

[@KarmaVoyager]

@@applepoop10 best thing you can do is use synthetic oil with good quality filters and change both regularly, half the mileage of what the manufacturer recommends. If you also don't abuse it while it's cold and warming up, even a Ford might last.

[@alexandrecouture2462]

I had a 2006 Mazda 5 with the 2.3 variant of this engine and I sent it to scrap at 300000km for rust and destroyed suspension, but mechanically the engine and auto trans were perfect! I also have a 2008 Mazda 3 with the 2.0 version and everything is fine, at 270000km.

[@Depp500]

No problem with Duratec 2.0, great motor.😉

[@chadholmes7051]

Great video just wanted to say your videos are the perfect length and have great momentum you get to the point without any unnecessary dribble whilst still explaining things well and even have a lot of good humour mixed in excellent editing and presentation.

[@davewhalen2774]

When you turned the crank untimed do you think it hurt the or your just replacing engine anyway?

[@MegaReddevil71]

Seen a few of these where the oil level has dropped and caused by these problems they like to use oil so keep checking levels to avoid this

[@outinthebackyard7579]

These are actually well known for being quite resilient and last about as long as it is maintained.

[@hashtagjustadad5110]

Clearly you know your way around this engine. I like how you not only named all the parts but also how they work or what they do. Great job. I just subscribed.

[@madunwerkstatt3093]

The internal looks pretty beefed up with all the extra girdle. Is the engine going to be rebuilt?

[@nicolas6820]

Maybe an used engine swap will be half of the price of rebuild that toasted one..

[@MrJoshap]

Hi. Im pedantic about the servicing on my 2.3 2003 mazda 6. Always change oil at 10k kms with quality stuff. Any thoughts or comments ? Engine is running well at 230kms

[@speedkar99]

I usually do 5-8000km

[@jeremymurphy7320]

I've got a 2.5L version of that engine and have never had an issue in 166k miles. I like technology but there's still something beautiful about a relatively sime NA engine like these Duratecs. Of course, maintenance goes a long way toward keeping an engine running but that goes for any engine.

[@freedomspeech9523]

Appreciate the video and the explanations. It would be better if you would add mileage and maybe service information history. Instead of "why engines fail", maybe "fail because not charging oil in time"? That by itself can lead to major issues on those small 4 cyl engines.

[@buffhorses]

My 2013 Mazda3 has 105,000 miles and I use Napa Gold/ Wix Oil Filters and whatever Synthetic oil is on sale, changed every 5-6k miles and still runs like a champ!

[@shaun2072]

Apart from the timing cover/sump arrangement, it looks like a nice design.

[@einfelder8262]

Yep, because timing this fucker after a chain change would be so easy. My old Holden red motor was a nice design, never had any issues, but port injection superseded the carby and now direct injection has superseded port injection. So this Mazda/Ford engine is ancient history.

[@speedkar99]

Overall yeah

[@KardiFan2000]

Much respect for posting this!...I have an '07 Ford Focus with the 2.3L Duratec/MZR...it's nice to know that the water pump is easy to access, but I'm not looking forward to re-timing the engine if need be 🥴

[@carlossantamaria7967]

These engine are really easy to work on 🥴 and you don't need to time it if you're just going to replace the water pump

[@KardiFan2000]

@@carlossantamaria7967 I'm a Honda tech...so when I got this car last year and I heard that these engines are not keyed, I was worried to say the least. Otherwise...it's easy to work on, just like most JDM engines.

[@spacecassette2108]

As mentioned a bolt can be removed to place a pin to hold the crank shaft prior to complete disassembly, these engines where designed to be taken apart with special tools in place to keep the time accurate, otherwise you’d end up causing a headache 🤕 not too bad, I’ve personally have been around these engine way to much lol been there done that kinda scenarios. Ford/Mazda do a great job now it’s the Chevy Cruze! That’s a terrible car and engine

[@vincentbaelde-millar670]

I can't believe how badly that timing setup is designed, you need to set the trigger wheel, crankshaft, and camshafts independently. On top of that, if your harmonic balancer isn't torqued enough it could completely destroy your engine.

[@vladdutz20]

They still use them in the Ford Kuga/Escape Hybrid, the 2.5 variant. I think these failures surface because of bad maintenance over time

[@applepoop10]

Maintenance is the key, these engines need extra care if you want them to last a long time.

[@trent7080]

Mazda skyactiv 2.5L is still very similar as well.

[@speedkar99]

Yeah and the type of vehicle they are in

[@slowbaruu22]

this is so interesting i have a 2011 Mazda 3 S with the 2.5 MZR and it's so interesting to see this engine being torn down

[@darbzz]

I have the same car i love ut and drive it through harsh winters !!!

[@tanertekin763]

Great as you always do, would be nice to mention after how many mileages they have failed !

[@ClosestNearUtopia]

Depends on maintenace. Like everything you wont maintain an engine also wont last if you dont…

[@speedkar99]

I wish I knew

[@tanertekin763]

@@ClosestNearUtopia I mean when we know what has failed it’s obvious whether it’s a design flaw or lack of maintenance, so knowing after how many mileage would be perfect.

[@ClosestNearUtopia]

@@tanertekin763 it still depends on maintenance. Do you change your oils regulairly enough, or do you even do that before the advertised milagr, do you use the right type and the right amount of oil. How do you ride your car, what are the wheather conditions. Its all about that, and then its also about you knowing your car, feeling and hearing when something is off. Maintenance on milage basically means you replace components before the fabricant cant guarentee function of the component anymore.. altough this not have to mean they are wont out at all..

[@tanertekin763]

@@ClosestNearUtopia a bad design or production problem will not be changed by a good maintenance.

[@JohnSmith-oh9ux]

2007 / Mazda 6 / 2.3 / 250k km / 70k done in last two years. Oil changed every 5-10k km. Only thing that gave up so far - AC compressor. Beast of an engine :)

[@xXYannuschXx]

Wait, the camshaft gears arent keyed? How do they ensure that they never get out of alignment due to small vibrations, or expect someone to re-align them?

[@the_real_corn_wallis]

Thanks for doing these videos, always educational and funny!

[@speedkar99]

Glad you enjoy them. What's so funny though?

[@trentjackson4816]

I love Mazdas. I have an MPS Gen 2 - red rocket with the 2.3L Turbocharger dynoed @250HP Very smart strong engine. Will give cars worth six figures a good run for their money.

[@mikef4077]

As good as this engine is and easy to work on, I don't know why ford did not put keyway on this beautiful engine. This is best engine of all time. This engine can abuse and yet won't die.

[@speedkar99]

They are sensitive to oil level though. The keyway is an oversight

[@JohnSmith-pl2bk]

algorithmae 1 day ago Timing is set by removing a small screw on the side of the block, and installing a peg that contacts the crankshaft and stops it from turning once it reaches TDC. I do wish they would have keyed the crank though :/ Paul Mills 1 hour ago @speedkar99 There are special service tools to lock the cams and crank to set the timing. With the tools it's relatively simple.

[@mikef4077]

@@JohnSmith-pl2bk you have to remove valve cover and do so much just to change front crank seal.

[@roddas26]

This video got me thinking I could probably strip a Mazda engine and replace a damaged bearing now. This is an awesome reference tool for any budding home mechanic. Thank you. ***I don't own a Mazda, or any tools for that matter. But if I did...

[@MrMoss786]

Awesome breakdown. Good engines but no timing marks is probably from Ford.

[@elstimate]

yep, they saved money on ZETEC engines already (Focus mk1 at least). but here they pushed further: oil sump cannot be removed without timing chain cover? that's crazy. FORD made pitty-penny on every aspect, so this engine is hard to maintain properly. buy it, throw it away after a while

[@speedkar99]

Haha

[@petersack5074]

@@elstimate GET SMART......purchase a Toyota, or top of the line, Honda. Leave North American junk.......alone.

[@danven1256]

All Ford. Mazda never produced an engine without a keyway.

[@Graham_Langley]

@@danven1256 It's a Mazda design adopted by Ford. I'm looking at the workshop manual for the Mazda LF engine, which is what we have here, and there are no keyways. You lock the cams and lock the crank then tighen the bolts.

[@Mach141]

The front cover / oil pans are separate on the skyactiv. It uses rocker arms too. Mazda made a lot of changes

[@staLkerhu]

Well, development is development after all. 🤷‍♂ Skyactive engines are probably a lot different than these ancient MZR L units. The 2.0L engine we can see in this video started its life in the first gen Mazda 6 back in 2002. Interesting though you can still find these new in the recently axed Ford EcoSport and Caterham 7.

[@affleck80]

You are a master of your trade, brilliant to watch and to learn. Absolutely phenomenal.

[@speedkar99]

Thanks

[@boowiebear]

Wow. That timing method seems really bad based on my limited knowledge of engines. Does that timing approach lead to issues?

[@speedkar99]

If someone has to do timing work yes

[@JohnSmith-pl2bk]

algorithmae 1 day ago Timing is set by removing a small screw on the side of the block, and installing a peg that contacts the crankshaft and stops it from turning once it reaches TDC. I do wish they would have keyed the crank though :/ Paul Mills 1 hour ago @speedkar99 There are special service tools to lock the cams and crank to set the timing. With the tools it's relatively simple.

[@rjb6327]

Not ALL Mazda engines fail. I am the original owner of a 2001 Mazda Tribute 3.0 V6 with almost 250,000 miles. Engine is maintained religiously. Replaced the transmission at 205,000 but engine is still strong. I plan on driving it until I pass off this mortal coil.

[@ardyjuniorcars9020]

Mazda CEO: speed Kar99 ‘so what exactly happened’

[@2405jacko]

You bought an engine from Ford, that's what happened.

[@MrErrrust]

Wasnt IT the other way around? Btw these engines are literally only killed by wrong amount of oil, which they sometimes consume.

[@speedkar99]

Haha

[@johnhayes3314]

Really well done video, especially given there are so few videos about this engine.

[@tricia154]

Clickbait title considering Mazda hasn't been involved with Ford for years now, and given the engines are entirely different from the ones referenced here. Definitely an informative video breakdown, just wish you had titled it a little less inflammatorily

[@speedkar99]

I understand. This was from an era where both ford and Mazda were using the same motors

[@lorenhumphrey1252]

Exceptional video. You are thorough, concise and waste no time.

[@MISTER__OWL]

I had a 2003 focus with this engine. That, car was kinda fun to drive but it was a POS and I junked it when it started having problems. I then bought a 2004 accord k24.

[@joeishere500]

Yup... had 1 for 4 years for my 2nd car / winter beater....

[@MISTER__OWL]

@@joeishere500 that little 2. 0 moved the car pretty quick

[@joeishere500]

@@MISTER__OWL ,,, yeah she's a runner... all stock..

[@speedkar99]

Good choice

[@JustinCase-em6ql]

I own 4 Mazdas. Never had a problem all these years. Good cars, and getting better every day

[@WorstPaperCut]

Why Mazda Engines FAIL : Ford.....

[@applepoop10]

I got 173k original miles on my 2006 Mazda 3 with the 2.3L engine. So far, I have not had any issues yet. The key is to generously change your engine oil! Because they tend to stretch the timing chain prematurely if the oil is not changed on time.

[@DashCamSerbia]

Yup. Oil and filters are cheap. Engines are not. Don't forget the transmission oil too.

[@bblundell72]

PCV failure on the MZR leads to them consuming oil causing oil starvation. I had an 06 Mazda 6 with the same 2.3 and did oil changes every 3k miles. Had the PCV fail and it drank all the oil in about 800 miles and burned up a few bearings.

[@davapod]

I religiously service the basics ie; engine oil/filter air filter and plugs. It really is worth doing and not that difficult and allows the worst designed engine to carry on. Mazda engines are considered to be very reliable though their auto boxes have a troubled history.

[@speedkar99]

Yes. Its easy maintenance

[@navinstrument8353]

2012 mazda 8 built in japan w/ 2.3L mzr w/ 90k km. So far it's been smooth and very reliable.

[@speedkar99]

Awesome! Is yours skyactiv?

[@navinstrument8353]

@@speedkar99 nope. Just the regular NA 2.3L.

[@paultap]

Title should be: "why Ford engines fail". This is exactly the reason why i pass on the MX-5 NC series; they have Ford engines.

[@TBPony]

sorry to burst ya but all of the ford/mazda 4cyl are mazda/ford collaboratives since like the early 80's all the way until like 2013

[@TBPony]

@Foreverchanger the weakness is the chain and the vvt cam gear, everything else is fantastic even the oiling system and the materials used. mazda designed, ford puts its own engineering into it and they both manufacture a parts bin which lots of versions of the same engine are made from but are all entirely compatible, even the ecoboost engines share that same parts bin

[@danven1256]

Since the NC came out there's been very little trouble with that engine. Again the only thing I've seen is damage from lack of maintenance. Beyond that you might have a thermostat on occasion just like the rest of the Ford engines.

[@aca2983]

I have the Duratec in a 2.0 Focus North American version (2010). Ugly car, with a few weak points (valve cover gasket, suspension bits, engine mounts) but the engine has 155k miles and runs excellent. I have the oil changed about every 5.5k miles with Valvoline synthetic blend "high mileage" formulation. The car has never used a drop of oil, and the oil even looks a nice new honey color most of the time between changes. When I bought this car (used) I intended to keep it only a few years, but I've now had it 9 years, the longest I've ever owned any car. Despite the ugly, I take care of it and it still looks good with shiny paint, clean interior, etc.

[@IchWillNicht0119]

I have a Mk2 Focus (not North American) with the Mazda Z 1.6 paired with the G4A-EL 4speed auto. I'm just at 80k very urban miles and it's lost some compression and the valve cover gasket was replaced. Getting 17/23mpg US city/hwy. Exhaust smells a bit too rich even when warm. No problem sustaining 100mph amidst tropical temps. It's everything outside the engine that's been more problematic. The front suspension is overstressed and needs new ARB links every year. The auto trans has harsh shifts from first to second sometimes (maybe a faulty solenoid). The AC blower, brake booster and the fuel tank are hard to access. Googling parts for the car is a bit complicated as the Mk2 shares little with American Fords but at the same time the config we got in Southeast Asia isn't identical to what they get in Europe (they got the Zetec instead of the MZR). I have to use Mazda3 info sometimes to get a better idea.

[@Todd-rk2lb]

no key on camshaft gear? what an engineer

[@speedkar99]

I don't like it either

[@leorickt.9604]

Incredible video. Very clear and well explained. Thank you! Could you do a timing chain change video? I dont really understand what you were sayig about having to time the engine manually

[@martinmiller7623]

Thanks to your family for sharing the belongings for cleanup.

[@grominwithrob1339]

Sucks that they made such a decent engine but decided not to key the cams or crank. Seems like a huge oversight.

[@tedolphbundler724]

Excellent. Still want to know why oil blockage happened inside the crankshaft. Didn't change the oil filter frequently enough?

[@jii5349]

Theres a plug you remove to insert a bolt to keep the crank from spinning when you time the engine. Keeps the crank from spinging when you torque down that crank pully. Its on the mazdaspeed engines. not too sure about the other mzr engines.

[@adriannalundasan7570]

2.5L Skyactiv owners breath easy now. 😆

[@speedkar99]

Until I get my hands on one

[@ZoraPMC]

@@speedkar99 let's hope they last forever so you wait forever to get one... that's my engine rn

[@adriannalundasan7570]

@@speedkar99 omg, keep holding our breath y’all 😆

[@nigelclark7360]

Interesting and very well explained a man who knows his stuff.

[@somap8380]

You are the best teacher/professor sir. 👍

[@dc5723]

Wow, what a stupid design with no keyway for the harmonic balancer.

[@speedkar99]

Very dumb for those who will work on it.

[@thegearknob7161]

@Zombie Head Many 80s cars have port injection. Some cars had it as long ago as the mid 70s. Some had EGR too, or stuff like air injection which is thankfully a thing of the past. Most 80s cars were worse in other ways. Many of them had timing belts because chains fell out fashion. I have a 1988 car with both a plastic intake and a timing belt! EGR valve on these duratecs are laughably simple and nothing to be afraid of. It's a seperate solenoid which pushes down on a metal plunger with a spring. There really isn't much to go wrong with them, and even if something did you can take it off in minutes anyway. All the pipes for it are cast into the head so there's no chance of anything leaking or going wrong because there's no connections apart from the single gasket at the valve itself.

[@waruiotoko378]

Wow!!! Youre more way better than scotty kilmer. I really want you to me my automotive class teacher!!!😎 thanks for sharing and pls keep posting more vids like this

[@speedkar99]

Thanks. Keep sharing

[@autobotavengerfireballxl5339]

The 2.0 litre is a great engine 👌

[@rckhalsa]

Could you take a look at the Honda 1.8L, 1.5t or 2.0L? Curious about Hondas direct injection and carbon buildup.

[@speedkar99]

I wish I could get my hands on one.

[@alexs.818]

These engines are known for great long term reliability and durability. Just don’t skip on maintenance. I have the 2.5L version of this engine and it runs like a clock even at near 100,000 miles. The 2.3L turbo GDI version of this engine is the most problematic.

[@speedkar99]

Agreed. How's the 2.0?

[@alexs.818]

@@speedkar99 my moms 09 Ford focus has the 2.0 which is exactly the same as the mzr version. Still going strong even tho it has 65k miles, but it gets it love in quality oil changes. We’re expecting it to last a while.

[@davidcoghill8612]

Both my old mazda and my even older toyota could quite happily do 10000 miles and when the oil was changed it still looked nearly new. My 1.2TSI engine turns the oil black the day it rolls out of the garage.

[@jmannUSMC]

I have 250K on one of these engines. Thanks for the teardown, I'm sure it'll come in handy one day!

[@speedkar99]

You are welcome. Does it burn any oil?

[@lightningsmokerXx]

Are you using Conventional Oil , Synthetic-Blend , Full Synthetic in your engine? Just curious as i have this engine with 50,000miles/80,000km

[@jmannUSMC]

@@lightningsmokerXx I've used synthetic changing it every 6-7k miles. It doesn't burn any oil but recently the valve cover gaskets started leaking some oil into the spark plug wells. Put in a new gasket which solved the problem.

[@lightningsmokerXx]

@@jmannUSMC I've heard the valve cover gasket is a common thing to leak around the spark plug-well or whatever they call it. Do you stick to 1 brand of synthetic oil, or just grab whatever is on sale. It doesn't matter.....but i was just curious.

[@jmannUSMC]

@@lightningsmokerXx yeah I just get whatever is on sale at O'Reilly's. I like shopping there because they stock Wix filters

[@Giuliana-w1f]

"Why mazda engines fail" Me: pls be the renesis

[@speedkar99]

Ok

[@martinjohnson9316]

Top class video presentation done at a good speed...thank you so much...subscribed!

[@speedkar99]

Welcome!

[@garyroach8624]

I have owned 2 Mazda 6 vehicles with 2.3 litre engine 15 years old with 324000km other had 296000km and both engines did not have 1 issue, I have now bought a Mazda cx5.

[@CanadaLuke]

Love your videos, keep it up! Maybe go get yourself a few pounds of goodwill clothes bin random clothing for more jokes lol.

[@speedkar99]

I already have a basket of clothes here waiting

[@akaitv6606]

Mines done 280000km no probs oil changes every 5000km . That tensioner is certainly out pretty far , I would say the chain has some stretch . I run my engine at 82 deg instead of factory 102 .

[@sinva4847]

Have you done a video on the Honda Diesels? N22a or n22b. Id Love to see a video on One of those as i own an accord with the b model. I think its a great engine and currently has 357000 kilometers on it without any problems.

[@speedkar99]

Never knew they had diesels I'm north America

[@sinva4847]

@@speedkar99 i see, i think maybe some models had Them in North America but im not sure. They are in the cu/cw models, or the tsx i think they are Called in America but i Guess they never sold the Diesels there then.

[@KarmaVoyager]

Basically a glorified lawnmower engine that still somehow ended up under engineered... Sigh typical mazda and fomoco. I guess they only want it to outlast the lease/warranty.

[@subbaaja100]

My 2.0 duratec is 16 years old and runs like a clock so maybe not that.

[@speedkar99]

There are worse engines...wait until I get to the Hyundai

[@zijiechen3846]

Even more interesting. The engine on my NC Miata didn’t fail… but the ignition wiring harness shorted out previously. Damn Ford parts…

[@Freedomind901]

i recentely bought a mazda6 2010 4cyl for my younger brother is this one reliable? automatic with 138 000km.

[@john21031]

Amazing. How many miles did this engine have and curious what the oil change intervals were... Thanks for uploading

[@speedkar99]

I'm curious myself.

[@waelmohammed7119]

@@speedkar99 👍👍👍❤️❤️❤️❤️🌷🌷🌷❤️❤️❤️🌹🌺🌺

[@manuelalbert3020]

Hi Sir you have great vlogs and very informative and in detailed. Just want to know what was the mileage of this engine when this breakdown happened thank you & more power to your vlogs

[@nathan4233]

Alright, i just did a junkyard overhaul on one and threw it in my escape 06 The overhaul consisted of almost everything getting replaced, basically it was a short block, i ordered a brand new head for it. Anyways, 1 month into my wife driving it around, i checked the oil level after hearing it stall out after being turned on, well she had a half a quart in her. Can anyone elaborate why i dont see a leak in the driveway, ive refilled it to see if it leaks while sitting and still no leak. So clearly its just while driving. Im about to get a leak down tester and see if the oil is seeping past the rings, granted im sure ill be able to tell something quick enough by pulling a sparky plug. Im almost positive it spun a bearing, so cross your fingers it didn't destroy the crank, which was the reason for the first engine getting thrown out. Im at a loss, i do not understand how an entirely different motor can end up with the same issue randomly

[@JBM802]

Every Mazda engine I replaced had FORD cast into the block. Weird.

[@KeciapTube]

it would be really cool to see an Na or Nb Miata engine teardown

[@darbzz]

I have the 2011 mazda 3 sport gx hatcback with the 2.5L. Its been through multiple winters . Oil changed every 5k . I drive a lot .

[@speedkar99]

Any rust?

[@darbzz]

@@speedkar99 im in alberta and theres a bit i think the previous owners did a good job at keeping it nice but like my brake sheilds have rust but overall great car for fwd and driving . Theres no weird rattles from the csr etc . I do need a few things changed . I drove 45 000 km with this car in less than a year so far

[@GTRDRIVER1]

The Problem a this Engines are the Piston Rings and the Teflon Coating - first of all the Teflon Coating get off after 100000km - then the piston Rings fail and then the engine will burn the oil - if the user fill up enough oil all the time after this happen he can use the engine a longer time - but most users dont recognise that the engines need more oil after 100000km and then the engines run dry - and the fist tings happens are at the Crankshaft bearings as you shown ...

[@STINCTEAM702]

You are the best at explaining things I appreciate it 👍

[@stimpicus]

This video is amazing and *exactly* what I was looking for. Thank you so much!

[@Techcensorshipbot]

I had this same engine. I think as these age they start to quickly accelerate their oil consumption. It makes sense but that was also the last engine I only checked the oil at the intervals. We ended up replacing the engine with a junk yard motor.

[@nathan4233]

I just did a junk yard one myself, and a month later I found the car had half a quarter of oil and no signs of where it all went. About to check/replace the rod bearings and see if I can get a better look into what happened here soon, really upsetting how short-lived my happy days were with it

[@HGSuper]

You are a proffessor in dead engine forensics.

[@speedkar99]

Sure am 🙂

[@Northeast_progeny]

Does the 2.5l in the Ford Fusion SE's have the same little faults? I got my 2017 with a 2.5 because Ford owners really liked the engine and praised its reliability with good maintenance. Seemed like the best engine choice compared tot he turbo ones.

[@speedkar99]

Yes It's similar

[@kittyNya38]

How good is the Skyactiv engine though?

[@pasqualeseccareccia4972]

Amazing light-years better than the older ford design

[@speedkar99]

Better than this

[@kittyNya38]

@@speedkar99 Glad to hear as that’s what’s in my car.

[@willgeorge5644]

does anyone know if there is a ratchet on the timing chain tensioner? I am working on a VW 1.4TSI, all the main features are the same. I think it was designed by the same person/team! strange...the cams and crank pulley also don't have keys. The pistons also have the graphite coating, the cam chain guides are similar except all plastic. But the VW tensioner has no ratchet, even with all new component, turn the engine back 90 deg and the chain can skip teeth! VW say there's no problem! the pistons break too. Don't have bearing problems though.

[@speedkar99]

They should have a ratchet

[@willgeorge5644]

@@speedkar99 "They should have a ratchet" i would think so too! but DO they? this is the VW engine, kzbin.info/www/bejne/iovUmKtqnJajo6M

[@joshhawn3988]

That thing had atleast 360k miles on it

[@anthonyxuereb792]

Why don't manufacturers coat the exposed engine castings to keep up appearances, does it just come down to cost?

[@speedkar99]

Cost

[@anthonyxuereb792]

@@speedkar99 that's disappointing

[@wowerman]

Thanks for informative video. I live in UK and would like to buy Mazda 3 2013-2018 with Skyactive 2L petrol motor for Euro market.How does Skyactive engine compares to previous gen of Mazda's?Does Ford who owns Mazda keep lowering it's quality? Would you recommend buying Mazda 3 mentioned above?

[@jakerestituyo8049]

Please, I´d like to see a 2002 Suzuki Grand Vitara engine teardown. Thanks.