Random chafing noise after cam belt change - MG-Rover.org Forums
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post #1 of 7 (permalink) Old 10-01-2017, 21:22 Thread Starter
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Random chafing noise after cam belt change

Hi All,

Odd problem after a cam belt, water pump and tensioner change.

Every so often, after seemingly random intervals, the car starts and it sounds like the cam belt is rubbing on the plastic housing. Turn the ignition off and start it again and the noise is gone. It can stay silent for weeks and then off it goes again. Switch off and on again it it sounds fine.

The car is smooth, engine sounds dead smooth despite having 101k on it and it pulls fine.

Has anyone had this before? The tensioner was definitely set up and torqued correctly.


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post #2 of 7 (permalink) Old 10-01-2017, 21:29
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If it was me id be back tracking and looking for evidence of rubbing.Not doing could get expensive.
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post #3 of 7 (permalink) Old 10-01-2017, 22:03 Thread Starter
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I plan to as soon as I can get a day of light without it peeing down It's the intermittent nature that's puzzling as I can imagine what could happen between one start and another that would cause it.
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post #4 of 7 (permalink) Old 12-01-2017, 13:53
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probably engine vibration when starting or even switching off

you can easily take the top half of the cover off and run the engine without, to rule that part out.

otherwise its under the arch, with a light and check the lower cover, you might struggle for access through with the alternator and ps belts on.
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post #5 of 7 (permalink) Old 12-01-2017, 19:25
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As above just check it to be safe. My car was meant to have a new belt just before I bought it 7 months ago, and yesterday on my way to work it snapped.
Now I have a headache, expense and inconvenience for my troubles...
Check it before you end up stuck on the side of the road like I was.
Good luck.
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post #6 of 7 (permalink) Old 13-01-2017, 07:30
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Possibly a broken cambelt cover or it's too tight x
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post #7 of 7 (permalink) Old 28-01-2017, 11:25 Thread Starter
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Hi All,

Sorry for the delay getting back, life's been a bit hectic recently.

Interestingly, I kept using it for short trips to see if I could get it to happen again and have a go at tracing the source but so far, it hasn't reoccured. I leant it to a visiting relative for a week and he put a lot of miles on it with no problems.

Looks like I'll just wait for a dry weekend and give it a good going over.

Thanks for all the suggestions and help. Will update if I find anything in case someone else has the same problem.


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