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Knocking hdi

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Knocking hdi
mad306man Offline
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#1
07-04-2013, 04:50 PM
My hdi has just developed a nasty knocking noise, sounds bottom end to me.

Opinions please, cheers

http://static.photobucket.com/player.swf...173714.mp4
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C2K Offline
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#2
07-04-2013, 04:53 PM
Video doesn't play.

Look at your crank pulley with the engine running.
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mad306man Offline
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#3
07-04-2013, 04:55 PM (This post was last modified: 07-04-2013, 04:56 PM by mad306man.)
[Image: 20130407_173714.mp4]
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C2K Offline
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#4
07-04-2013, 04:57 PM
http://vidmg.photobucket.com/albums/0803...173714.mp4 worked

As before, look at your crank pulley through the wheelarch with the liner off, i bet its flapping about.
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cully Offline
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#5
07-04-2013, 04:58 PM
bottom pulley or autotensioner gets my vote
take the aux belt off and runn the car again
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mad306man Offline
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#6
07-04-2013, 05:00 PM (This post was last modified: 07-04-2013, 05:00 PM by mad306man.)
Nice one for fixing the vid, I must be an idiot.

Are you expecting the pulley to have worked loose?
Can it be tightened?
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cully Offline
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#7
07-04-2013, 05:02 PM
the pulley breaks up as its in two pieces
it needs replacing as if it throws the aux belt it is not uncomon for it to take the cam belt off wrecking the engine
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C2K Offline
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#8
07-04-2013, 05:03 PM (This post was last modified: 07-04-2013, 05:03 PM by C2K.)
The rubber damper inbetween the inner and outer fails, causing it to flap about. It can cause lots of damage if it grenades so try to get a new one asap. ECP should sort you out.

It should be obviously concentric when healthy, eccentric is bad.
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mad306man Offline
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#9
07-04-2013, 05:12 PM
Cheers guys.

Gonna have a closer look shortly when the kids are in bed.

I did glance at the bottom pulley and think hmm, that looks a tad wobbly but thought little of it as I was more worried a rod wad going to fire out of the block Dodgy

Is the pulley easy to change?
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C2K Offline
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#10
07-04-2013, 06:31 PM
Not difficult. Detension belt and buzz the bolt off. If you don't have a gun, get a friend to stand on the brakes with the car in 5th and crack the bolt.
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mad306man Offline
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#11
07-04-2013, 07:17 PM
Yeah, that thing is flapping around all over the place.

I can feel the inner rubber to metal bond moving with my hand Confused

Gonna have to chance it to work tomorrow, but can drive another car the rest of the week.

Sounds pretty straight forward to do, so will have a crack at the weekend.

To de-tension, is it just a matter of moving a tensioner pulley using a socket?
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#12
08-04-2013, 06:12 AM
Yes, you can lock it off with an allen key or similar.
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mad306man Offline
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#13
08-04-2013, 01:29 PM
Nice one.

Can anyone share the torque setting for the pulley bolt please?
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mad306man Offline
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#14
08-04-2013, 07:54 PM
All done now, cheers all
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C2K Offline
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#15
08-04-2013, 09:16 PM
Sweet, noise subsided one presumes ?
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mad306man Offline
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#16
08-04-2013, 09:27 PM (This post was last modified: 08-04-2013, 09:40 PM by mad306man.)
Yes mate, all quiet now Big Grin

It's nice to now know what to listen for in the future now. Its much quieter than when I bought it so must have already been going.
This is what came off

[Image: 20130408_223105.jpg]
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