2.0 hdi crank pulley - do they all rattle?

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ashy90
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Joined: 22 Oct 2010, 13:51

2.0 hdi crank pulley - do they all rattle?

Post by ashy90 » 08 Sep 2019, 17:14

Since buying my Xantia a couple of months ago, it has made a clattering/rattle sound, which I believed was the crank pulley - though I couldn't see any movement or wobble. Its a 2.0 hdi and I read that this is a common issue with this engine?
So I bought this: https://www.ebay.co.uk/itm/FOR-PEUGEOT- ... 2749.l2649

I fitted it yesterday. There was some dust behind the old crank pulley when I removed it. The noise I was hearing has gone, or at least changed. There was a rattle type noise I could hear still (car on ramp with bonnet open).
I cant decide if the new pulley has either
a) got rid of the rattle, or
b) changed the rattle/type of sound.

I couldn't lock the engine, so I made sure it was tight with my impact gun. Most crank pulleys have to be tight, I assume over tightening this wouldn't cause a rattle?

moizeau
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Re: 2.0 hdi crank pulley - do they all rattle?

Post by moizeau » 08 Sep 2019, 17:35

It's not a common problem with the engine, but a serviceable item with a dual mass pulley. Check the auto tensioner, it should stay 'motionless', if it's flicking around it needs replacing. Also does the sound change if the AC is on (if it still works). Mine has a rattle when the AC clutch has not engaged.

Peter.N.
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Re: 2.0 hdi crank pulley - do they all rattle?

Post by Peter.N. » 09 Sep 2019, 12:37

The tensioner will rattle if the belt is not running perfectly round all the pulleys, just shine a lamp on it with the engine running and see if its jittering.

Peter

ashy90
Posts: 230
Joined: 22 Oct 2010, 13:51

Re: 2.0 hdi crank pulley - do they all rattle?

Post by ashy90 » 21 Sep 2019, 13:31

There was two tensioners, or one tensioner and one idler. One with a 16mm bolt head and the other a 15 from memory.

One is a sprung loaded tensioner against the belt which I held away with a long spanner while I slipped the aux belt on and off.
The other, when the bolt is cracked off, there is some movement/adjustment via a 1/4 square drive.

With the engine running, I think there is possibly some slight side to side movement in the running of the aux belt. Looking at the top (fuel pump?) pulley it looks like it wobbles.