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Hi!

My 407 keeps surprising me and not in a good way.

After a recent trip I started to hear a grinding noise. It seems to be coming from the camshaft chain housing. Is it possible that the chain or the tensioner has gone bad?

A video for illustration:
 

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think i'd tart by getting the cambelt cover off-sounds like the tensioner perhaps ? are you losing any water ? might be waterpump if so...
just a start of your looksee
good luck
neil
or loose bottom pulley?
 

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Sounds like the valve lifters to me given the frequency of the noise.
Have you got any oil in it?
When was the oil and filter last changed?
 
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