DCR VVT actuator

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23-01-2012, 05:07 PM
MPS2NV

DCR VVT actuator

Dont assume that these VVT units are the "ducks nuts" compaired too the revised factory parts from mazda. Even though its known that the factory VVT's fail, keep in mind how much time, money and examination mazda (car manufacturers) put into re designing parts they know are failing compared to small fish in the seas attempt at creating a reliable alternative.
Another good example to follow is "If it aint broke, dont fix it" being to carefull sometimes doesn't workout!

Buying such parts that can cause severe engine damage from over seas means your pretty much all alone.
23-01-2012, 10:32 PM
Jmac

Is there a story to this post michy bum

Sent from my GT-I9100 using Tapatalk
24-01-2012, 07:51 AM
Caffeine Fiend

Definitely sounds like there's a story attached to this
25-01-2012, 07:27 PM
Fletch

Quote:

Originally Posted by MPS2NV

Dont assume that these VVT units are the "ducks nuts" compaired too the revised factory parts from mazda. Even though its known that the factory VVT's fail, keep in mind how much time, money and examination mazda (car manufacturers) put into re designing parts they know are failing compared to small fish in the seas attempt at creating a reliable alternative.
Another good example to follow is "If it aint broke, dont fix it" being to carefull sometimes doesn't workout!

Buying such parts that can cause severe engine damage from over seas means your pretty much all alone.

Mazda couldn't give a rats ass about sorting out this issue once and for all.

Fact is the Mazda VVT actuator even factoring in the "redesign" which is purely just a heat treatment on certain components of the original design is still a piece of shit, Mazda have absolutely no idea how to fix these annoying rattles eminating from certain 2.3 DISI engines.

I've personally wasted thousands at Mazda dealers trying to sort this out and fact is even with a Mazda Japan engineer involved they have no idea how to fix this issue - its a joke.

The DCR actuator is a viable option for those sick of dealing with Mazda - check the US forums its well documented how well these units perform.

You should justify your statements on a public forum such as this.
02-02-2012, 09:36 AM
MPS2NV

In the event that something goes wrong the 2 problems you will face is that 'A' the repairer can just blame a part for failure meaning you are left proving that the part is ok and 'B' the over seas seller really doesn't have to do anything if they dont wish too.
Thats a nice risk to take on some items that may not be better then a dealer supplied part and in the event of a failure the workshop and part supplier would be obligated to you to settle the matter between them. I assume this would also mean that fair trading could also stamp their feet as well.
02-02-2012, 11:18 AM
Jeev

Quote:

Originally Posted by Fletch

I've personally wasted thousands at Mazda dealers trying to sort this out and fact is even with a Mazda Japan engineer involved they have no idea how to fix this issue - its a joke.

I just had the Timing Chain, Chain Tensioner and VVT Actuator on my car replaced at my own request. Noises are all gone... The VVT Actuator didn't even need to be replaced, I just had it done while they were working on it.

What have you had replaced and what sort of noises are you talking about?
02-02-2012, 06:12 PM
Nexus

Quote:

Originally Posted by Jeev

I just had the Timing Chain, Chain Tensioner and VVT Actuator on my car replaced at my own request. Noises are all gone... The VVT Actuator didn't even need to be replaced, I just had it done while they were working on it.

What have you had replaced and what sort of noises are you talking about?

Considering the same service myself. Have had a single instance of cold start rattles, and the rest of the time there seems to be just a little bit of noise, and occasionally it'l have a bit of tick/rattle on start. Settles quickly. Only just started making these noises. 145,000K

Any risk to the internals from VVT actuator failures?
02-02-2012, 06:41 PM
Jeev

Quote:

Originally Posted by Nexus

Considering the same service myself. Have had a single instance of cold start rattles, and the rest of the time there seems to be just a little bit of noise, and occasionally it'l have a bit of tick/rattle on start. Settles quickly. Only just started making these noises. 145,000K

Any risk to the internals from VVT actuator failures?

It's possible, but I'd be more worried about the risk posed by the chain and tensioner. All work completed including labour and parts were $1650 and I had it done at 154,000kms.
03-02-2012, 02:44 AM
duglet

May have to look into it lol

I have 192000kms and counting

Happy Motoring
duglet

Sent from my Olivetti typewriter
03-02-2012, 08:35 AM
Jeev

Quote:

Originally Posted by duglet

May have to look into it lol

I have 192000kms and counting

I've also heard that your car now sounds a little agricultural :p
03-02-2012, 08:36 AM
PPK88

1 Attachment(s)

I have read on US forums that they are extending the warranty for this issue?
03-02-2012, 09:35 AM
MPS2NV

From what info is available to me and discussions I have had with my mazda mate short answer is no. The unit is designed to retard inlet cam timing only and is apparently fail safe in regards to the unit being advanced in the event of a failure providing initial cam timing was set correctly. With the examples of VVT noises on youtube it would be fair say that is pretty true as the cars more then likely get repaired asap! I would expect engine damage if you ignored the serious noises as something in the timing train would eventually fail and severe engine damage would occur!

Quote:

Originally Posted by Nexus

Considering the same service myself. Have had a single instance of cold start rattles, and the rest of the time there seems to be just a little bit of noise, and occasionally it'l have a bit of tick/rattle on start. Settles quickly. Only just started making these noises. 145,000K

Any risk to the internals from VVT actuator failures?
03-02-2012, 01:57 PM
Reedy

Quote:

Originally Posted by Jeev

I just had the Timing Chain, Chain Tensioner and VVT Actuator on my car replaced at my own request. Noises are all gone... The VVT Actuator didn't even need to be replaced, I just had it done while they were working on it.

What have you had replaced and what sort of noises are you talking about?

Your cars nickname "Sleeve of Wizard" is hereby revoked.
03-02-2012, 02:35 PM
Caffeine Fiend

*Jeev puts on his robe and wizard hat*

..........
03-02-2012, 08:15 PM
Jeev

Quote:

Originally Posted by Reedy

Your cars nickname "Sleeve of Wizard" is hereby revoked.

Indeed. I went for a bit of a cannonball run with the PF guys and got a "That thing is a beast comment" :D

Quote:

Originally Posted by Caffeine Fiend

*Jeev puts on his robe and wizard hat*

..........

LOL
04-02-2012, 08:58 AM
Nexus

Quote:

Originally Posted by Jeev

It's possible, but I'd be more worried about the risk posed by the chain and tensioner. All work completed including labour and parts were $1650 and I had it done at 154,000kms.

As soon as I said it I thought the timing chain's the bigger worry.
13-02-2012, 05:13 PM
Fletch

Quote:

Originally Posted by Jeev

I just had the Timing Chain, Chain Tensioner and VVT Actuator on my car replaced at my own request. Noises are all gone... The VVT Actuator didn't even need to be replaced, I just had it done while they were working on it.

What have you had replaced and what sort of noises are you talking about?

I've replaced all three- VVT actuator, timing chain and the tensioner and the same rattle noise on start-up was still there.
13-02-2012, 06:49 PM
Jeev

Without hearing it myself, it's too hard to say if it's bottom end, top end or something loose. It could just be something really simple, but easy to overlook :(