Engine noise

[nujon]

Noticed today an erratic tapping noise from the upper part of the engine @600rpm tickover - disappears from 1,000 rpm upwards - 97,000 on the clock - any ideas anyone? (the car is due an oil change BTW)

[Horizon]

Possibly a hydraulic tappet/ cam follower, used to be a common problem on early OHC engines. Hope its a simple cheap fix like this

[snipez999]

Very common - it is a BMW after all - ha!

[Horizon]

[quote="snipez999"]
Very common - it is a BMW after all - ha!
[/quote]
Carefully, you are beginning to sound like ?????

[nujon]

Thanks for the replies

From listening to Youtube BMW engine noise clips, 'my noise' sounds most like a worn serpentine belt tensioner - anyone had this on a 3.0D ?

[nujon]

Sorted ! - idler pulley and tensioner pulley were both rattling slack - replaced and the noise has gone 

[Reusch]

Glad it's sorted mate and not to much wonga

[nujon]

[quote="Reusch"]
Glad it's sorted mate and not to much wonga
[/quote]

~£100 quid for the bits (tensioner pulley, idler pulley and new belt) - had to remove the air intake and rad fan to get enough room! (water pump, alternator and aircon compressor bearings were silent on spin so I've left them alone)

[shadrack]

[quote="nujon"]
[quote="Reusch"]
Glad it's sorted mate and not to much wonga
[/quote]

~£100 quid for the bits (tensioner pulley, idler pulley and new belt) - had to remove the air intake and rad fan to get enough room! (water pump, alternator and aircon compressor bearings were silent on spin so I've left them alone)
[/quote]

i had that on a e36 m3 i had a few years ago