Mazda6 2.0 Diesel 2007

tred

Folks,
I am getting mixed information on this car. Is it a timing belt or a timing chain it has?

Tred

Leonard Hofstadter

A quick Google suggested to me that these engines have a chain. It will be in the owner's manual anyway.

To be honest OP if you're considering one, I would run away, and very fast. Those 2.0 diesels can give serious trouble as the miles pile on - the big end bearings can give up the ghost in these!

colm_mcm

Yep, this engines reputation makes belt or chan insignificant

-Corkie-

colm_mcm wrote: »

Yep, this engines reputation makes belt or chan insignificant

Ya the chain on the oil pump would worry me more..:)

horseone

there's a timing belt in these cars but stay well away. If you insist on doing Mazda, I'm sure the petrol Mazda will provide better re-enforcement for that much lauded Japanese reliability.

The MAzda 6 engines are incredibly soft after 6 figure mileages...and parts are ludicriously expensive. The CR injectors went on my mams car some years back (2003 120bhp with 105k mls), at the time Mazda wanted €5300 for 4 new OEM injectors (+ fitting).

Got 4 DELPHI injectors fitted aferwards for €2k (incl. t-belt as the pump had been removed also).

She flogged the car 2 months later to a local chap for €6k and I've been told since the engine went shortly afterwards.

She would have been fair pi$$ed off if that happened having just spent €5k+ on injectors. While we're talking Mazda 6 diesel, while the car was a cracker when going well the fuel economy was never dazzling. I recall 42mpg being the go of it.

After years of driving diesels myself (and happy to do so), I'm starting to re-evaluate to whole cost/benefit given so much complexity and signficant cost is tied up in replacing DMF, DPF, turbos, EGRs, CR injectors that are in mosy modern diesels.

Certainly helps the petrol cause that my mileage has plummted in recent times.

coolbeans

We had one. They're a great car until the engine gives up and they inevitably do. Ours got to 120k miles until big end bearing failure became imminent. Walk away. Mazda screwed up with this one.

Tea 1000

coolbeans wrote: »

We had one. They're a great car until the engine gives up and they inevitably do. Ours got to 120k miles until big end bearing failure became imminent. Walk away. Mazda screwed up with this one.

Did it actually fail or did it just become "imminent" in your opinion because of internet talk?
Well looked after ones that got serviced on time with the Mazda spec oil are typically fine. Injectors will possibly need replacing, but that's on most diesels. Changing the fuel filter every 6k service will help keep them fine.

Nissan doctor

The vast majority of big end failures on these engines could be prevented if people checked their oil regularly. Diesels burn oil but most Irish people think that once the car has been serviced or passed the nct that the bonnet doesn't need to be opened for another year.

All the 6 diesels I've had in with failed bearings have been low on oil or showed other signs of lack of oil maintenance. Yes other engines can hold up to this abuse better but we have a taxi customer who has his oil changed every 5k miles and has just over 180k miles on his original engine.

The injectors are another issue but again lack of servicing, sh1te quality diesel and low speed/city driving makes the problem much worse.

coolbeans

It certainly wasn't internet talk. Before the big end became noisy it blew smoke out the back like an Icelandic volcano with an associated serious drop in power. Seriously, it was embarrassing to drive such was the the cloud it left behind even under the mildest of acceleration. The Mazda mechanic in Clonmel who serviced it on the button from day one told us to get rid of it fast before it failed altogether. He corroborated the stories on here. It's not pub or keyboard warrior talk. They're a ****e engine and bearing failure is only one among a series of problems. We sold ours to an indy mechanic who knew of the problems in the end. It's a pity as it was such a lovely drive when it worked.

For the record it was serviced meticulously with the correct Mazda oil and oil levels were checked bi-weekly, and yes, it loved a drop of oil. I'm not saying they all fail but implying that those that do only do so because of poor servicing does not stand in our case.

horseone

I recall being told that Mazda retrospectively recommended sump removal to clean the oil pump gauze filter. The dealer maintained that engine failures (camshaft and big end knocking etc) were in large part due oil starvation when this was not done as part of regular maintenance.

In any event, it seems to be a helluva lot of effort for "regular maintenance", more like crap design. How come older cars always survived without such maintenance activities being undertaken.

Nissan doctor

coolbeans wrote: »

It certainly wasn't internet talk. Before the big end became noisy it blew smoke out the back like an Icelandic volcano with an associated serious drop in power. Seriously, it was embarrassing to drive such was the the cloud it left behind even under the mildest of acceleration. The Mazda mechanic in Clonmel who serviced it on the button from day one told us to get rid of it fast before it failed altogether. He corroborated the stories on here. It's not pub or keyboard warrior talk. They're a ****e engine and bearing failure is only one among a series of problems. We sold ours to an indy mechanic who knew of the problems in the end. It's a pity as it was such a lovely drive when it worked.

Big end bearings failing can't cause smoke...

coolbeans

I never said they did. Obviously there was another problem too.

coolbeans

Tea 1000 wrote: »

Well looked after ones that got serviced on time with the Mazda spec oil are typically fine.

Typically, I don't think so. Not in our case anyway. I've been around diesel engines all my life and while I'm no mechanic I do know the principles of preventative maintenance. This car got it all and it still failed badly. It was blowing smoke well before it became noisy too. Do you own one? It may have been one in a million but not very many were sold in this country relative to other marques but it's earned itself a bad reputation. The Mazda mechanic confirmed all of this before I read any of it on boards. He's the one I'd be listening to.