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27th January 2014, 16:55 | #1 |
Gets stuck in
Rover 75 Saloon Join Date: Jan 2010
Location: Preston
Posts: 625
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Diesel Crankshaft Pulley Noise
My manual diesel saloon has done about 95000 miles. Last Friday I encountered crankshaft pulley noise for the first time. I sprayed the alternator belt with belt dressing and the noise stopped immediately. I did about 70 miles over the weekend and the noise did not return. The noise started again today when the engine was cold but disappeared when the engine warmed up. Does the pulley always need replacing once the noise has started or can uneven forces from a dry belt twist a good pulley thus inducing the noise?
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27th January 2014, 16:59 | #2 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
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27th January 2014, 17:05 | #3 |
Gets stuck in
Rover 75 Saloon Join Date: Jan 2010
Location: Preston
Posts: 625
Thanks: 50
Thanked 44 Times in 32 Posts
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27th January 2014, 17:15 | #4 |
This is my second home
Rover 75 Saloon Join Date: Aug 2007
Location: Avignon
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Don't wait ....
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27th January 2014, 17:16 | #5 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,753
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
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The noise is created by the two sections of the pullet striking each other. They can only do that when the rubber interleaf is failing. The noise usually quietens when the interleaf is lubricated with water, etc, or the revs are increased. Engine temperature will have an effect in the early stages but it's down hill from there. I've heard reports of a pulley disintegrating and the outer ring being ejected at light speed. It's a sooner rather than later thing really.
TC |
27th January 2014, 17:37 | #6 |
Gets stuck in
Rover 75 Saloon Join Date: Jan 2010
Location: Preston
Posts: 625
Thanks: 50
Thanked 44 Times in 32 Posts
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How long does it take to change?
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27th January 2014, 18:31 | #7 |
Discount MG Rover Spares
Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011
Location: Hythe, Southampton
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It depends how seized the bolt is - some have come off quite easily, others have had to really fight to get it off.
I have a quality aftermarket (not to be confused with the quick-failing cheap items other members have had issues with) or the OEM item here: Crank Pulley - CDT Mine wasn't too bad to get off, thankfully. Hopefully yours will be the same.
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