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Old 19th June 2022, 11:32   #1
chicochapman
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Default New noise from the front.

Its a 2002 KV6 ZTT automatic with 116,000 miles on the clock.
A new noise from the front has appeared which I can best describe as an irregular muffled clonking sound which only appears on the over-run.


Has anybody any thoughts on what it might be ?


Thanks,
Malc

Last edited by chicochapman; 19th June 2022 at 11:42.. Reason: added automatic
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Old 19th June 2022, 13:11   #2
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At 116,000 miles has your ancillary belt tensioner ever been renewed?

You could also examine your engine mountings.

Simon
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Old 20th June 2022, 20:21   #3
chicochapman
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Thanks Simon.
I have an invoice from MG Rover Mobile Mechanics of Derby dated 2015
showing "all cambelts, cambelt tensioners, guiders and waterpump" were replaced at 87,000 miles.
On reflection, I think the noise is there all the time - its just more apparent on the over-run when the engine is quieter.(my hearing is not too good !)


The lower engine mount was replaced about 2 years ago as I noticed a distinct "clunk" on moving off, however, I'll have a look at the other mountings as you suggest. I'm also thinking of waggling the front wheels to see if its a bearing problem?
Thanks,
Malc
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Old 21st June 2022, 07:45   #4
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Hi Malcolm,

It was the ancillary belt tensioner I was asking about! From memory, if you remove the OSF wheel arch liner you can observe it whilst an assistant revs the engine. I once did this on a friend's Saab 9000 and the loss of belt tension was very apparent.

Simon
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Old 21st June 2022, 12:43   #5
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The large bearing housing that transmits the drive shaft to the offside front wheel , have for some members been an issue once they get worn and show signs of play. They can be replaced . You could check that out once you have eliminated the other suggestions first.
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Old 23rd June 2022, 18:46   #6
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Default Solved

Well, I'm embarrassed to admit it but in the interests of full disclosure,
it was an insecure front wheel!
Four of the studs showed a wide shiny area where they had been "fretting".


I just used the hand wrench to tighten the studs on the basis that in the event of a puncture I would have a chance of getting them undone.


However, all tightened to 125 now and I'm keeping the torque wrench in the car.


I'll get me coat!
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Old 24th June 2022, 10:12   #7
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It's nice to have an inexpensive and satisfactory solution Malcolm! Thanks for reporting back.

Simon
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Old 24th June 2022, 19:29   #8
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I admire your honesty and courage to admit your oversight !! ... and the upside to all this .. ? It has now sorted out your problem , so Alls well that ends well. ...
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