help engine sounds terrible with video

[Dunn]

as above i noticed my car sounds like a diesel in fact worse than that

only noticed it this week, but last week a serviced the car but ive just checked oil level is perfect so its not starvation

i have a feeling its the dephaser pulley but im not positive its coming from there

i am a trainee mechanic ( well trying to be) so taking it some where is not an option for me as i simply cant afford it and isnt logical for me

so on idle after few seconds this horrible noise starts and fades out when revved up

has anyone replaced these themselves with out doing whole cam/aux belt kits i need the cheapest possible way

easter holidays are coming up and i will have the time to fix it

thank you people

 

[Dunn]

i now wish i did a full flush when changing the oil any other waay of cleaning it out maybe??

 

[Dunn]

??

 

[ebo]

hiya mate

my car also sounds like a diesil, i had my belts done last month and noticed it the other week. (i dont use the car that much) i checked my oil and indeed changed it today it made no difference.

on start up my car is fine however the noise starts and gets a bit louder when it heats up properely. im gonna take it back up to get them to have a look at it when i get a free moment so will post up any results

 

[Dunn]

probs the dephaser as far as im aware they are not changed on cam belt change unless requested
i need to find a cheap one first though before i think about changing it

 

[Mike@Rentech]

If you have had a full cambelt kit fitted in the last year or so you can get away with just a cambelt replacement approx £20-£25 for the belt, plus an accessory belt £20 and a pulley £135.
As your a trainee mechanic you can do it yourself and save a fortune.
Just check to make sure the tensioner and bearings are all good and dont forget the accessory belt ones as well.

 

[legohead01]

its not a dephaser mate ive just been one for a mate. its ended up have an engine in it. yet to strip the lump down but its down to not gettin oil to the top end. looks like a engine is needed. sorry to say. see your in cheshire as i am. if you want a new lump puttin in i can do it for you. done 2 in a month lol

 

[Dunn]

new engine LOL can anyone verify this as it only sounds like a pully

thanks mike so your sayin i can just get away with fresh belt and a dephaser pully

is it worth putting a used one on as ive seen one for £30 do they wear due to age or not?

 

[Dunn]

i must add that the car is warm in the video not started from cold

 

[legohead01]

just have it checked. i went to do the dephaser pulley and just checked the cams and there really wont due to lack of oil. if your havin the belt done ask them to look at the cams. sorry for the bad news

 

[Dunn]

ok mate but im not having it checked as i dont have the money.and i want to know how to solve it myself
dont think it is down lack of oil.engine runs absoulteley fine no loss of power or other horrible noises.and the noise dissapears at higher revs so sureley its the pulley? correct me if im wrong as im only presuming.

 

[Dunn]

anyone else had any experiance with this?

 

[Nightwalker]

It sounds like either a tensioner pulley or some really bad hydraulic tappet rattle. How many miles has the engine done? If you have a sticky tappet you may have some luck running a flushing oil through the engine. I would try that, then if its still the same look at striping down the front of the engine and check the bearing in each of the idle and tensioner pulleys (for the aux belt and cam belt).

 

[Dunn]

its on 78k thanks for the advice ill try a flush tommorow or thursday and report back

 

[Nightwalker]

If you have a clean drain can (I usually cut the side out of an empty 5 litre one) you can save the engine oil you drain and re-use it (you mentioned just having changed it last week, just be sure to keep it clean and don't let any containments get in it!). After running a flushing oil I would replace the oil filter, then fill her up and test again for noises. If the flushing oil comes out really filthy look to do another oil and filter change after a few weeks. Sometimes if a highish mileage engine has not had regular oil changes and you run a flushing oil it can free up lots of crud. Another oil change after a few weeks will help get that out and keep it away from the fine oilways.

 

[Dunn]

thanks mate really appreicate the response.this is the plan for tomoz.dont i run the flushing oil into the original oil though therefore not being able to reuse it?

 

[DannoTheGreat]

Get yourself some cheap oil to use while flushing it out, no point in using good oil

 

[st3ve]

How long ago was the cambelt done?

Sounds like something hasn't been put back on properly at the top end. I'm no mechanic though, you'd have to take it to someone to get some proper advice.

 

[Dunn]

was done end of 2008 10 k miles ago
pretty positive its the dephaser anyways
and its only apeared recently

 

[Nightwalker]

thanks mate really appreicate the response.this is the plan for tomoz.dont i run the flushing oil into the original oil though therefore not being able to reuse it?

You can use a flushing additive like Wynns, then you have to add it to the oil (as danno172 said use cheap oil for that). You can also get a 5 litre can of flushing oil and put that in. Its no good to drive with it in but leaving the engine at idle will free up the gak.

 

[Flooky]

Bit off topic, I went to look at a 172 Cup last month and when I started the engine it sounded just like this! Again sounded like it was coming from the dephaser. Let us know how it goes.

 

[BBCQE]

I've got the same problem on my mk1 172. Dont know is the tensioner problem or the engine.

Cam belt, water pump, aux belt, tensioner, everything had changed last year ( 62000 KM) Oil change last month and found no metal pieces in the oil. :S

 

[Dunn]

its deffo the dephaser havent had the money to sort it as of yet
130 labour an 130 for the part
very grim

 

[biojo]

dunn are them prices ex vat? Ive been told 5hrs labour and 150 for part from renault so total of 360, just hoping it is this , garage has it today, so dreddin the call back

 

[Dunn]

no thats all in i think thats what north west performance charge i think

 

[Dunn]

plus throw a belt on while your at it too

 

[biojo]

yer mine had all new belts n tensioners 3-4 weeks ago. Should know come tea time if its sorted.

 

[Dunn]

nice should do a before and after video

 

[john.med]

Didn't Fred have a car in that had this very same prob? Worth a search.

 

[biojo]

the before vid would sound like just the rest when warm , its a diesel

Yeah fred had problem more or les changed every thing still didnt find it lol

Theres loads of threads relating to dephaser thats gone , and tbh most his is the case only in odd ones its found to be other pulley or something far worse

 

[specializedgreg]

Just thought i'd add that i had the same sound coming from mine, so i had the cam and aux belt fitted + the dephaser pulley changed today by ryan at northwest performance, and hey presto, engine sounds like new. He showed me video of how naffed it was, quite shocked really. Best of luck sorting it.

 

[biojo]

yep been told mines done today pickin it up in morn , lets hope its all good

 

[Trainerbrow]

I am soooooooo glad you never got back to me about viewing this car, lol

Just had a search through your posts, asking for everything on the cheap. Trainee mechanic? PMSL