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Author Subject: Engine noise
tvrfan007

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Post #1
Hi guys, I need some help please from those of you more familiar with this engine than myself. I'll put down the info I can, but please ask if you feel i've missed something pertinent off. Be patient with me, i'm a bit fed up with the car at the moment.

The engine in my rallye was knackered, a proper tapper. I took it out and replaced it with a 2002 Xsara lump at the start of my project. I had been in the car it was out of and the engine was sound. I decided to change the cambelt as a precaution of the engine standing in the car whilst I was away.

I had always cranked until well after the oil light went out before starting. When I finished in the bay with piping everything up I ran the engine a dozen or so times, and it definitely got properly warmed up on at least two occasions - one on the new oil last week when i was testing the fan operation - didn't hear this noise at all.

I have recently changed the cambelt thanks to a helpful member on here. I used a new genuine Peugeot 136 Cambelt kit with new tensioner and roller. The water pump was also changed at the same time. At the time of the belt change, it was started and it sounded fine, but was switched off after 15 secs or so as it needed bleeding.

Last night I took the car up and down the drive a few times to check for noises on the suspension which has all been apart, the engine was warm for the first time since the belt change and I noticed it making a noise I hadn't heard before. I can't pinpoint where the noise is coming from so I wonder if anyone has heard this before.
Right click and download

It is not the crank pulley, as I used the one which had slipped a little off my old engine and it was exactly the same. It's also not the auxiliary belt circuit as it does it with the belt off as you can see in the video. The noise isn't there when you first start the car, it only really appears as the oil gets sufficient temp to start nudging the needle on the temp gauge. There is tons of oil sloshing around the head under the oil cap and a sump full.

I am a bit lost for words to be honest, it sounded beautiful before the belt but I don't see anything wrong. Crazy
As you can hopefully hear it doesn't sound like a knock it sounds like something is rubbing maybe.

Is this maybe the belt a little tight? I can turn the belt about 45 degrees I think on the run from inlet cam to roller. I'll have to check that.

Thumbs down

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Posted 8th Mar 2013 at 19:28
bigbadbowen

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Post #2
Cam belt is too tight dude Yes
Posted 8th Mar 2013 at 19:30
tvrfan007

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Post #3
Have you heard the noise before or is it just something you think from my text?

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Posted 8th Mar 2013 at 19:32
stan_306gti6 Forum Admin

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Post #4
Just listened to the video, it doesn't sound like the belt is too tight to me, and if it was, there would be a constant whine all the time, not just when the engine got up to temp.

I would be surprised if it solved the issue, but you could try loosening it just a tad and see what happens. All you need to do is to loosen and *slightly* back the tensioner away, but only by a fraction then do it back up again.

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Posted 8th Mar 2013 at 21:35
tvrfan007

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Post #5
Aye nothing to lose. I've got the car back on stands in the garage, will try it tomorrow.

this thing needs to work! If its not the belt, and I'm not certain it is, I'm f**ked if I know what it could be. Only useful thing I found when googling was an evo that sounded the same after a belt but he doesn't say what solved it as he basically did an all fresh belt kit.

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Posted 8th Mar 2013 at 21:52
coskev

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Post #6
Belt too tight IMOYes

Temp will alter itWink as all the metal components expand when hot.

So if its slightly too tight you will have it quiet untill everything expandsSmile

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Posted 9th Mar 2013 at 11:47
daveyboy

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Post #7
I've heard these with a belt to tight and it did'nt sound like that. However the sound quality on phone videos is never much to go on.

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Posted 9th Mar 2013 at 12:36
stan_306gti6 Forum Admin

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Post #8
daveyboy wrote:
I've heard these with a belt to tight and it did'nt sound like that. However the sound quality on phone videos is never much to go on.


Agreed, it sounds more like the cambelt rubbing on a plastic cover or similar as opposed to it being overtensioned. Yes

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Posted 11th Mar 2013 at 12:18
footah212

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Post #9
stan_306gti6 wrote:
daveyboy wrote:
I've heard these with a belt to tight and it did'nt sound like that. However the sound quality on phone videos is never much to go on.


Agreed, it sounds more like the cambelt rubbing on a plastic cover or similar as opposed to it being overtensioned. Yes


I've recently had a funny noise since swapping my engine and fitting a new cam belt.

Mine was the same, ie not making the noise until it had heated up a bit.

I have loosened the cam by very slighty twice and the noise has gotten better each time. I would say part of your noise could be cam belt tension related.

That being said , mine was not making the ticking noise in your video but was making the other 'bearingy noise' i heard in your video.

The engine I put in had been lying a while and the tappets [ or whatever their called] were very noisey for the first half hour or so. I guess they have to fill up propelry after draining from sitting for so long.

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Posted 11th Mar 2013 at 12:39
swiftyboi006

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Post #10
I recon one of the bearings are on its was out in one of the pulleys. Mine sounded like that untill it got worse and started squeeling.

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Posted 11th Mar 2013 at 18:00
stan_306gti6 Forum Admin

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Post #11
swiftyboi006 wrote:
I recon one of the bearings are on its was out in one of the pulleys. Mine sounded like that untill it got worse and started squeeling.


Possibly, but the tensioner and roller are brand new Peugeot items. Yes

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Posted 11th Mar 2013 at 18:57
dangti6

aka JKshooter

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Post #12
Get a long screwdriver to your ear and try to pin point the area.

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  • Posted 11th Mar 2013 at 19:17
    daveyboy

    aka Jim Davey

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    Post #13
    dangti6 wrote:
    Get a long screwdriver to your ear and try to pin point the area.


    Careful you don't stick it into anything that's moving though. (And obviously hold the blunt end to your ear not the pointy end Wink. )

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    Posted 12th Mar 2013 at 07:51
    dangti6

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    Post #14
    And if you find you need assistance getting changed into some old clothes and finding the bonnet release all by yourself - PM daveyboy.

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  • Posted 12th Mar 2013 at 12:47
    stan_306gti6 Forum Admin

    Location: Kent

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    Post #15
    Laugh

    That was quite funny, I can't imagine someone putting the fat end of the screwdriver in the bay and then bursting their eardrum with the sharp end...lol.

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    Posted 12th Mar 2013 at 13:31
    tvrfan007

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    Post #16
    That, folks, is the sound of a f**ked water pump.

    A f**ked, brand new Peugeot OE, changed as a precaution, water pump. Thumbs down

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    Posted 26th Mar 2013 at 19:16
    stan_306gti6 Forum Admin

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    Post #17
    Sad

    Still, at least you what it is now and can get it sorted. Thumbs up

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    Posted 26th Mar 2013 at 22:31
    dangti6

    aka JKshooter

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    Post #18
    They'll blame it on you living in a hard water area no doubt.

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  • Posted 26th Mar 2013 at 22:33
    robthe6

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    Post #19
    ah solved. I was about to say. check the pulleys an pump without the belt on just because something's new doesn't mean it cant fail straight away. but already you've had the belt off an found it heh

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    Posted 26th Mar 2013 at 23:58
    tvrfan007

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    Post #20
    dangti6 wrote:
    They'll blame it on you living in a hard water area no doubt.


    Lovely water where I am. Wink

    Had assistance from someone much more familiar with these engines than myself. Having had the belt off I had felt resistance in the pump (compared to the one on my old engine on the floor), but assumed it was due to the engine being full of coolant - I can't remember turning it by hand much before installing it.

    When the car is started it sounds beautiful, until there's plenty of temp in the coolant and the oil starts coming off the bottom. Clearly there is sufficient thermal expansion here to cause issue with the water pump bearing.

    I'll get onto Peugeot today and see what's what but with Easter away and business overseas next week it's going to have to sit like that for a while - preferably with the belt on so I can move it when Trevor comes back.

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    Posted 27th Mar 2013 at 07:16

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