Why Mazda Engines FAIL
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- Опубликовано: 1 авг 2024
- Here's an in depth teardown of the Mazda MZR / Ford Duratec 4 cylinder engine and how it works!
The Mazda MZR is a 4 cylinder all aluminum engine designed by Mazda but also jointly used by Ford until today in their Duratec / Ecoboost 4 cylinder engine lineup. It has dual overhead cams, a timing chain, variable valve timing on the intake side and EGR. Ecoboost or MazdaSpeed versions come with a turbocharger bolted to the exhaust.
In this video, a failed Mazda MZR engine from a 2010 Mazda 3 is taken apart to examine how this engine works and what causes them to fail. In general, the engine has a simplistic design, with one main timing chain driving two overhead cams, and a smaller chain driving the oil pump. There are no balance shafts. The engine block has a separate ladder structure that retains the main crankshaft bearings, therefore an upper oil pan isn't required. The biggest design flaw is the lack of keyed crank and camshafts that would make timing the engine much easier; instead it must be manually timed.
This engine was making a loud locking sound. After teardown and analysis, it turned out to be due to lack of oil lubrication on connecting rod #4, which overheated and caused the rod bearing to spin. The extra clearance created by not having the bearing caused the piston top to collide with the head around the valves.
Skip to section in the video:
Introduction 0:00
Overview 0:21
Teardown 1:36
Component Analysis 12:13
Conclusion 16:07
Get tools and parts to keep your Mazda or Ford 4 cylinder engine well maintained here:
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At least the water pump is on the OUTSIDE.
I know right!!
@@speedkar99 It is a halfway to Toyota or Honda engine quality.
At least the water pump is still made of alloy and not plastic.
Nissan......VQ series water pump built in......
@@rondhole Try above Lexus reliability currently . Its overall the most reliable brand in the world right now . Mazda .
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 👍😊🏆
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.
I have 2 2.0s both run strong and have 230 k
@@nowukkas2472 my mps have 245000km on.not using oil still running good.i service car every 5000km
Bought mine new in 2009, not a single issue :-D. Just over 170,000 km, couldn't be any happier
every engine is that ugly from the inside that has more than 30000km on it
I love how mentions which rag came from which family member. lol
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....
@@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..🤷🏿♂️
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
"This crusty sock came from my father's, brother's, nephew's, cousin's, former roommate."
@@Cys62 probably these are not old clothes, he just steals stuff from his family members
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.
100% agree
Here in Oz, taxis running the Barra engine go more than 1M kkms, and the engine is then still sought after.
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.
@@leumamk5259 Very reliable. Unless owner is moron and cheapskate...
@@JohnSmith-oh9ux Well, then, according to you, the majority of first gen Mazda 3 owners are morons...
Also kinda unfair to Ford/Mazda how this failure was caused by improper maintenance and not a flawed design like the title suggests
plus it may have 500,000 miles on it
Agreed, though these engines are quite oil sensitive.
@@speedkar99 all engines are oil sensitive, they all need proper lubrication or problems occur.
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.
@@ahuramazda323 true but this video from carwow shows how much better honda engines are even when oil starved ruclips.net/video/zyejT4VPzlE/видео.html
I am the original owner of a 09 Mazda 3 sport GX 2.0 liter with 536500 kilometres I use synthetic oil changed every 15,000 kilomtres. No noises no rough idling I use it daily. Great video and maintenance is still the key to engine life. You pay a lot for a car so why would you skimp on maintenance? I enjoy your very informative educational videos. Great work!
Damn. How are you not bored with the car? My 2015 mazda3 has 100,000 kms and I will admit I am bored with it but as I can’t afford a new car I will keep it for another couple of years.
I have a Mazda 6 2011 with 175000 miles on it and still running fine, change the oil every 5000 miles, no issues apart from two oxygen sensor changes that need replacement
Awesome! Maintainance is key
I have a 2011 and i love it , and i drive it through harsh winters
@@speedkar99 totally agree. by the way what do you think, is it wise to start a car without pressing clutch to prevent slight lateral movement of crankshaft and causing extra stress to spun bearing, especially when engine is cold and there isnt much oil and therefore there is more wear? I read about this, what is your opinion? Does it make sense?
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! 💪)
I'm glad you appreciate my work. It sure takes alot to procure engines and produce these videos
@@speedkar99 👍👍❤️❤️👍👍👍🌷🌷
I bet his teeth are all shiny chrome.
You're very good at figuring out all those various "passages"--- Oil, water, exhaust, cam phaser, EGR, hydrogen, sludge return to pan, metal return to pan, and where bent valves end up. Kudo's. Keep them coming.
Love this channel. Also bought an '06 Mazda 3 about a year ago, 2.0l exactly like this one. Thanks for putting in the work, this is super cool and now I'm super glad I haven't tried to do any timing adjustments to it because no keys is a bitch!
Awesome. How's your Mazda 3 holding up?
@@speedkar99 Pretty well, though don't want to jinx it. It makes a little bit of valve noise, my mechanic said it seemed like the lifters but also told me it probably won't be an issue for the foreseeable future. I've been religous with oil and filter and it's definitely gotten quieter. For $2k it's been great, super fun to drive, 30 mpg with a bit of hooning mixed in. I highly recommend that 1st generation of Mazda 3.
The only thing the first gen really has to worry about is the body rust due to the cheap metal thanks to Ford (which went away when the second gen was introduced right after Mazda split in 09)
If it’s still in good condition make sure you treat it, I think the first gen still holds up pretty well aesthetically and I’ve seen good looking examples with 200k at work
@@mistermr2147 been living with the ticking noise for a year now lmao
7:20 those socks are good at soaking up liquids lol
Excellent for the job!
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.
When you turned the crank untimed do you think it hurt the or your just replacing engine anyway?
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.
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 :/
Yeah I did see that bolt near the crank.
@@speedkar99 There are special service tools to lock the cams and crank to set the timing. With the tools it's relatively simple.
The whole point of a floating pulley is faster assembly in the production line.
Anyone knows if it is possible to add more power to these engine ex changing cylinder bearings and adding a turbo?
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
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)
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.
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
@@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
I’ve installed a used engine from a salvage yard into a customers car, only to find out the salvage yard had loosened the crank bolt. This means disaster, since the timing chain spins when the cams try to center on the lobes. The cams must be locked with the correct holder tools, BEFORE loosening the crank pulley bolt! For crank TDC you can use the pin, or a dial indicator on the piston. The crank won’t spin on it’s own, as easily, only the cams.
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
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.
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.
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
@@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?
How many times did you change your clutch on the Mazda 3?
@@crow_2k11beatsbydre8 once
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.
5:45 - That's the washer that keeps everything in time 😁😁
That little washer....so dumb
What a great video. I have a 2012 Mazda 3 with this MZR engine ( Not a sky active). I’ve found it to be a great engine, I’ve always changed the oil every 5k. Aside from the valve cover gasket leaking and some leaks from the timing chain cover, this been good so far with 127k. I had that this was a direct injection engine so that’s nice to know it’s port injection.
Hello, any updates about the engine ? :) just bought one of these.
@@alexgearhead still have it, over 150k miles now. Zero issues with engine. Just did engine mount as mine was starting to wear.
@@D_Spear thank you, what's written on your engine cover, is it MZR 2.0 DISI ? DISI means it's direct injection(that's what it says on mine)
Ahh yes the MZR! I was waiting for a teardown of this engine, I have a 2005 2.3 6 with 180k+ on it, timing chain is still good, engine is strong only issue is that the valve stem guides are a bit worn, the 2.3's are near identical to the 2.0's minus the timing chain issues as the 2.0's, these MZR's are durable but very very oil sensitive you always have to make sure you have the correct amount of oil, and clean oil in it at all times or a bearing WILL spin.
Agreed. Very oil sensitive.
The N/A 2.3 has a different timing chain to the 2.3T, also the 2.3T has a high pressure oil pump while the N/A doesn’t, the reason the 2.3T has timing chain issues is because it has a thinner timing chain due to packaging constraints
Lol, I have a video of one of these that came through the shop with the exact same problem a couple of years ago. We heard it knocking and told the customer who said 'I've got bigger concerns with this car right now'. A month later he came back say it was now his primary concern and I shot the video of it running and what we found when the oil pan came off.
Really well done video, especially given there are so few videos about this engine.
You know your engine mechanics hands down. impressive.
Mr Speedkar, what do you do to the
engine pieces after you have finished
making the video ¿¿¿¿
Awesome video, anything I wasn't totally sure of explained and in simple terms at speed. No time wasted and I greatly appreciate that. Great job mate, showing the way these should be done.
Still relevant too! I read that the 2.5L engines used in the hybrid system in the Ford Escape and upcoming Ford Maverick are based on this MZR design (Mazda L). (Update: it's in the Ford Fusion Hybrid too.)
Yeah the Mazda engine is still in use in many ford's although Mazda themselves have somewhat abandoned it
@@speedkar99 mazda doesn't and hasn't used this engine since 2012.
@@speedkar99 Yeah, my understanding is that the 1st gen Skyactiv-G were heavily modified MZR, but now they have totally new engine designs.
The 2.5Ls are actually good engines, I've yet to see one fail or hear of a failure unrelated to somebody loosing the crank bolt and throwing the engine out of time. The one with the bad rap is the 2.3L, they are known to suddenly start burning a lot of oil and most people don't catch it until the oil pressure warning light comes on, which is usually too late. The good news is that the 2.0L, 2.3L, and 2.5L will all bolt up in place of each other and pretty much plug in so you can do cool stuff like drop a 2.5L into your 2.0L Focus.
I thought early 2012 was the last model with the mzr too, which is what I have, but then a few weeks ago a 2013 sedan Mazda 3 with a 2.5 mzr came into my auction lot and had me baffled. I wonder if it was some kind of special option to get rid of excess inventory?
I have a Mazda 3 2010 with this engine, no problem whatsoever keeping it good with oil changes and cleaning the intakes. Mazda engines have been very reliable in my experience.
Altho its a Ford engine. Only mazda maping on in.
@@CarloLeonKolega cool to know that. thanks.
Thanks for doing these videos, always educational and funny!
Glad you enjoy them. What's so funny though?
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 🥴
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
@@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.
Best car engine channel on RUclips. Thank you
The disdain at 5:45 is incredible
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..
And a special tool to hold the crank pulley while torquing. The lack of keyway is soooo stupid
I neither drive nor own a vehicle yet I find this very informative.
Great Video I have had 3 Duratecs as said here just be good about all oil changes and these motors will go a very long time w no problems. I have always challenged some of the best engines ever built and under rated for their greatness. Awesome video as always. Outstanding mechanic!!
Thanks, glad you appreciate it. I'm not a mechanic, I'm an engineer
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
Who’s to say these later engines won’t have issues. The MZR is a Mazda motor.
@@leekumiega9268 negative, it was designed by Mazda.
@@leekumiega9268 Engine block is Ford, Mazda designed different head for their cars.
Note that only miata which didnt have any rebadged product with ford, is bullet proof reliable. So i think ford is the culprit.
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
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.
Yup. Oil and filters are cheap. Engines are not. Don't forget the transmission oil too.
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.
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
Thank you for the teardown. Lots of good stuff here.
Yep lots of things to learn
“Medical particles” cracked me up at 12:30.
Oil galley instead of gallery cracked me up.
My 08 Mazda 3 has been rocking so far. Fingers crossed!
How many km?
@@speedkar99 225k+ km. I got it with around 210k km.
What did you do make the engine last a long time?
@@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.
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.
I managed to catch my spun bearing in time,was making a slight noise from cold (1 or 2 secs after startup),when I disassembled,the bearing had moved about 10 degrees from where it should be.
I keyed the conrods and installed keyed bearings and never had a problem since.
I would also like to add,that some of the MZR's use an oil feed from the timing cover to supply the VVT.
Thank you for sharing your knowledge, I learned a lot !!
You are welcome
Ok ok ok …. Does every car mechanic know all this stuff OR ARE YOU JUST THAT DAMN GOOD…?
I'm not good. This is common knowledge
He just dunked on you son.
Just remember this: your lube tech is not necessarily a mechanic.
My 2013 Ford C-Max hybrid with this same 2.0 engine has 190k. Runs perfectly and doesn’t burn a drop of oil. I do run full synthetic and change the oil ever 6k. Even I’m surprised it’s been so good 😂
Nice teardown and analysis!
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...
Dude knows what he's doing keep it comin bro!
Thanks. What engine would you like to see next?
@@speedkar99 4g63? If you're lucky to find one
I agree he knows his engines
Pentastar V6? Not sure if one's been torn down on this channel yet.
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.
very cool we got this engine in the ford fiesta st 150 mk5/mk6 in europe in a slightly different configuration. no egr valve no variable timing and no flaps for the intake. i also think they are good and reliable when you take care of them also they have alot of potential. i went to the dyno last year with my 215.000 fiesta and it made just with an exhaust system 158hp while factory its 150 and with cams intake and a tune they can make up to around 190hp. compression was also very nice 14-15 bar troughout all cylinders. im just wondering how you set the crankshaft sprocket right because it triggers ignition and it nit beeing keyed is pretty messed up
You are a master of your trade, brilliant to watch and to learn. Absolutely phenomenal.
Thanks
Apart from the timing cover/sump arrangement, it looks like a nice design.
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.
Overall yeah
These are actually well known for being quite resilient and last about as long as it is maintained.
Exceptional video. You are thorough, concise and waste no time.
This video is amazing and *exactly* what I was looking for. Thank you so much!
The internal looks pretty beefed up with all the extra girdle.
Is the engine going to be rebuilt?
Maybe an used engine swap will be half of the price of rebuild that toasted one..
No problem with Duratec 2.0, great motor.😉
Excellent. Still want to know why oil blockage happened inside the crankshaft. Didn't change the oil filter frequently enough?
A little late to the party, but I really like how you explain the various parts and systems on the engines you take apart.
So what caused the spun bearing? Infrequent oil changes? Too little oil? Foreign matter in the crank? Bad luck?
These MXR engines are very oil sensitive so basically everything you listed will kill an MZR, the 2.0L's show are the most problematic so I option you get a 2.3 over really anything else, the 2.3's are extremely reliable engines (mine has over 180k on it) just make sure you have the right amount of oil at all times
@@giovanni233 a friend of mine had spun bearing on a 2.3 too, maybe it's not that reliable.
No oil going to the bearings
@@giovanni233 I had a 2.3 that spun a bearing too after a pull low on oil
@@maurocont yeah, they are oil sensitive but as long as you keep the oil clean and at the right level you should be a good, there are lots of engines that are reliable but very oil sensitive or sludge prone.
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.
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
I have the same car i love ut and drive it through harsh winters !!!
Well Done Video, Good information for Mazda Owners / Buyers
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
I had the 2.3L in 2004 Mazda6 with a maual. It had regular oil changes & never came close to letting me down. In fact, I prefer it over the 2.5L Skyactiv in my 2016 Mazda6. It punched above its specs & had a great engine note.
Top class video presentation done at a good speed...thank you so much...subscribed!
Welcome!
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?
That's a good engine!
The cylinder head flows really well
Those engines provide lots of power the only thing is is that there are plenty of questionable at best engineering choices on that engine
That's what I'm saying this engines can handle anything you throw at them. Even the Disi engine which is the 2.3 turbo from Mazda that's a great engine people just don't know how to take care of them
@@carlossantamaria7967 yeah but using washers to keep an engine in time? Idk sounds like going around the block to get next door. Might as well get a 2gr or 2ar
Mazda MZR with Individual Throttle Bodies ♥️😀
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
Maintenance is the key, these engines need extra care if you want them to last a long time.
Mazda skyactiv 2.5L is still very similar as well.
Yeah and the type of vehicle they are in
You are the best at explaining things I appreciate it 👍
Interesting and very well explained a man who knows his stuff.
This engine is an absolute beast and fun to rev out when paired with a manual transmission. My 2007 mazda3 will rust away before the engine or transmission give out lol
Lol I have the same but my bearing has spun😭 the rust is getting bad but I want to fix the engine so bad
Great as you always do, would be nice to mention after how many mileages they have failed !
Depends on maintenace. Like everything you wont maintain an engine also wont last if you dont…
I wish I knew
@@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.
@@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..
@@ClosestNearUtopia a bad design or production problem will not be changed by a good maintenance.
I own a 2011 Mazda 6 manual transmission with one engine similar to this one, the 2.5 liter version. they are really good, and they don’t have the direct injection like the sky active ones, mine is already on the 175000 miles with no problem so far, one thing I like it’s I don’t have to worry about direct injection issues neither transmission issues. Only oxygen sensor replacement so far, regular maintenance
Wasn't 2011 when skyactiv started?
@@speedkar99 at least not on the Mazda 6 model. Because my Mazda 6 is from 2011. I think 2012 was the first skyactive
@@speedkar99 I also had a 2016 Mazda 3 with sky active and automatic. But I sold it recently with 90000 miles no problems either. But I just did not trusted their build as the old 2011, I don't know, maybe it's just me but I trusted the manual tranny and did not want to bother with direct Injection carbon build up later on.
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!
Wow. That timing method seems really bad based on my limited knowledge of engines. Does that timing approach lead to issues?
If someone has to do timing work yes
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.
I wonder if you have your own, say, Top10 or at least Top5 most reliable engines based on your observation?
Interesting that the MZR uses square shaped I-Beam rods from factory. I can see a few similarities between this linear predacessor engine further down the line from the Mazda FS series engines.
Interesting indeed
The front cover / oil pans are separate on the skyactiv. It uses rocker arms too. Mazda made a lot of changes
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.
Awesome breakdown. Good engines but no timing marks is probably from Ford.
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
Haha
@@elstimate GET SMART......purchase a Toyota, or top of the line, Honda. Leave North American junk.......alone.
All Ford. Mazda never produced an engine without a keyway.
@@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.
My 2011 Mazda 3 2L engine has travelled 347000km and is still running strong!
Service your engine on or before it’s due date, never miss a service, and it will last.
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?
Another great video! So, is the 2.0 ecoboost in my 2015 escape based on this engine?
nope
Mazda CEO: speed Kar99 ‘so what exactly happened’
You bought an engine from Ford, that's what happened.
Wasnt IT the other way around? Btw these engines are literally only killed by wrong amount of oil, which they sometimes consume.
Haha
2.5L Skyactiv owners breath easy now. 😆
Until I get my hands on one
@@speedkar99 let's hope they last forever so you wait forever to get one... that's my engine rn
@@speedkar99 omg, keep holding our breath y’all 😆
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.
In the U.K. the 1.8 mzr Mazda mx5 2006/7/8 seems popular fail from oil starvation. It does seem service every 6 months with fully synthetic oil is key to engine longevity.
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
I understand. This was from an era where both ford and Mazda were using the same motors
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.
They are sensitive to oil level though. The keyway is an oversight
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.
@@JohnSmith-pl2bk you have to remove valve cover and do so much just to change front crank seal.
My 2013 Mazda 2 has a 1.5 liter engine that I think is related to this. Very smooth and eager.
Spot on editing good video
So it's a Ford engine. I mean it is Made by Ford Motor Company. You should mention that in title. Mazda no longer uses these. Haven't used them since 2013 or so.
Rumors have it that at the time, Mazda designed all the 4 cylinder engines, while Ford developed the 6 and 8 cylinders.
Yes true. I also mentioned that in description
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.
Agreed. How's the 2.0?
@@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.
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.
I had to watch this video again, Mazda now at 591,000 kilometres no ticking, starts up quiet. It would run better if I put fresh plugs in it as the current ones were put in at 300,000 kilometres. LoL. My mechanic actually complimented Mazda after doing 4 wheel brake job at 589,000 kilometres. Perhaps one day I could get you the motor to tear down but I'd have to drive the car to you. My wife's new CX 5 2.5 litre makes more noise from it's tailpipe than my 2.0 litre. I change Mazda's oil every 15,000 kilometres but I do use synthetic oil. I enjoy your knowledge and excellent presentations.
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.
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
@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
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.
It’s true. I’ve seen them fail after only 250k miles. 🤪
Have you done a teardown video on any of the Mazda skyactiv engines?
Amazing. How many miles did this engine have and curious what the oil change intervals were... Thanks for uploading
I'm curious myself.
@@speedkar99 👍👍👍❤️❤️❤️❤️🌷🌷🌷❤️❤️❤️🌹🌺🌺