dephaser

[riffz1]

hello everyone, im new this and renaults in general, just bought myself a 172 yesterday.

been doin a bit of reasearch on these engines etc...

these dephaser pulleys do they have a expected lifetime or change intervals and how can you check it is functioning correctly ?

 

[jesus]

http://www.cliosport.net/forum/showthread.php?621435-FAQ-Is-my-dephaser-pulley-on-it-s-way-out

 

[TOGUSA]

Welcome to the forum matey
just had mine done with the cam belt, basically they should run for at least two belt changes, but if your engine sounds like a taxi idealing then it prob needs changing, typically you will find that it sounds very tappy, and you might have a erratic ideal. ill be uploading a video of what a fooked one sounds like soon.
cost about 180 on top of a belt change.
its dirty oil that kills them, so regular oil changes are a must

Beaten to the vid's lol

 

[riffz1]

ooo im gona check the sound of mine tomorrow after seeing that vid, but i might change it when i change my timing belt soon...
i am a mechanic myself but ive not come across one of these types of vvt yet, ive come across bmw vanos and honda vtec.
but this is pretty much the same principal as every other system.

 

[plymcl172]

I would be careful when doing the belts. Have you done a 1*2 before?

 

[riffz1]

Done plenty of renaults , same principal , got the locking tools at work ... Just haven't done one with a dephaser yet

 

[Chip-mk1]

Only way to check if they are really is sound, how long they last depends on the life that they have had in the first place (rpm etc)

Easy enough to change if you are competent at doing belts.

 

[Tigger]

Is it the dephaser gone in this, as mine has started to make that noise recently?



http://www.youtube.com/watch?v=3nrhsjsM2_0

 

[baldwig]

does it affect power?

 

[Mr R.]

Id say so.

 

[riffz1]

no noise at all, was just curious to see if they had an expected lifetime but defo next month when i can and its not busy at work i will get round to it, changing the timing belt.

might aswell do the dephaser while im there to save problems later on

 

[Chip-mk1]

does it affect power?

Not normally, just rattles at idle. Maybe if left really long after it might start to a bit.

 

[Chip-mk1]

no noise at all, was just curious to see if they had an expected lifetime but defo next month when i can and its not busy at work i will get round to it, changing the timing belt.

might aswell do the dephaser while im there to save problems later on

Makes sense if keeping a long time. You are highly unlikely to ever need to do it again unless you do 100k miles using not great oil.

 

[Tigger]

does it affect power?

If that was for me, no - not that I've noticed :S

 

[Andyman]

If your handy with the spanners i wouldn't worry a jot about the dephaser. Just replace it when it needs doing.


The mass hysteria with the dephaser is all down to the cost of a cambelt changing.

 

[Chip-mk1]

If your handy with the spanners i wouldn't worry a jot about the dephaser. Just replace it when it needs doing.


The mass hysteria with the dephaser is all down to the cost of a cambelt changing.

Agreed, I didnt bother putting a new one on my turbo despite all the money I spent building the engine, didnt see any point in replacing one that is fine anyway, will just do it if it ever needs doing in future.

would be a different story if I was paying a few hundred quid labour though I guess!

 

[Tigger]

Anyone know what that feckin noise is? lol

 

[riffz1]

Agreed, I didnt bother putting a new one on my turbo despite all the money I spent building the engine, didnt see any point in replacing one that is fine anyway, will just do it if it ever needs doing in future.

would be a different story if I was paying a few hundred quid labour though I guess!

true since labour isn't a problem for me, and the dephaser is working thinking I could just change the belt I suppose

 

[Ade182]

Anyone know what that feckin noise is? lol

At idle it sounds exactly like mine did before it went to Fred for dephaser & belts so quite possibly dephaser if it sounds like that at idle. The tapping noise should go after 2,500RPM or so if its the dephaser.

 

[Tigger]

Aye that noise only occurs between 1.5-2k

 

[Ade182]

Aye that noise only occurs between 1.5-2k

I'm 95% sure its dephaser then, which means new cambelt & aux belt kits unfortunately! It's expensive yes but you are guaranteed piece of mind after the work is done!

 

[Tigger]

I'm 95% sure its dephaser then, which means new cambelt & aux belt kits unfortunately! It's expensive yes but you are guaranteed piece of mind after the work is done!

No worries then as my belts are due in a few months anyway
The dephaser is part of the cam kit I assume, yeah?

 

[MicKPM]

LoLz... no, its a separate part I'm afraid.

We do belts and dephaser with an oil and filter change for £560 though (and thats with genuine belt kits to)

www.diamondmotors.co.uk

Mick

 

[Tigger]

Oh cool....

Come to Norn Iron lol

 

[MicKPM]

Is that an offer of a ticket? LoL

 

[scotty10]

just reading this....so if you have just had both belt kits done why would you need both new kits again if the dephaser needs done later on

 

[Chip-mk1]

just reading this....so if you have just had both belt kits done why would you need both new kits again if the dephaser needs done later on

Because no one is likely to remove and refit a secondhand cambelt realistically, especially given that the tensioners never want to sit quite right the second time they are tensioned so its difficult to have confidence the tension is set correctly (although thats just the cambelt, I would happily re-use an aux belt if it was nearly new TBH)

 

[scotty10]

Makes me wish I got mine done now after forking out a wedge of my wages on the belts

Another question can the MPG change after belt changes

 

[lemonnobby]

If timing is wrong it may go down.

 

[Dan@SJM]

If you've lost MPG I've generally found its the timing that causes it

 

[Dan519]

just reading this....so if you have just had both belt kits done why would you need both new kits again if the dephaser needs done later on

you wouldn't. If both full kits are new (less than 6 months/6k) then just 2 new belts and a couple of blanking plugs are all you'd need.

 

[waal]

People help !!! Change cam belts kit and aux kit + water pump few weeks ago but not change dephaser pulley . Now engine when heat ticking . Tomorrow add a video to youtube.com with engine sound to diagnose . Sorry for my english if you don`t understand .... CS Member waal Cheers

 

[waal]

If i have a problem how much it cost ?

 

[Xanda73]

Take it back to the garage and ask them? Read this thread and you have all the answers of what to do if it is the dephaser that needs changing. Good luck.

 

[scotty10]

I'm going to keep an eye on it but need to figure out how to reset the trip computer

 

[Andyman]

People help !!! Change cam belts kit and aux kit + water pump few weeks ago but not change dephaser pulley . Now engine when heat ticking . Tomorrow add a video to youtube.com with engine sound to diagnose . Sorry for my english if you don`t understand .... CS Member waal Cheers

Probably more related to the new belts than being the dephaser.

If its a dephaser you would really know about it, proper heavy rattling