This is my first posting and I'm pleased to join your forum
By way of introduction I would advise you that I was enjoying my relationship with a very fine Z3 until someone burnt it of our driveway
The fire almost cost us our home too and my lifelong girlfriend / wife announced that we would never ever consider rag top cars again even after our many years of abusing them
We now enjoy our Z4 which is, of course, a convertible without having the rag top
However -- the help / advice which we need is about our other Beema the 320 d SE tourer
It "makes" a funny noise just as it starts up.
I find the noise very difficult to describe and therefore I'm more comfortable telling you what it DOESN'T sound like -- it is neither a knock a rattle or a belt squeal.
It does not occur while the starter motor is cranking the motor -- it occurs for a millisecond just as the motor fires
The start up is as instantaneous as is possible and the noise could not be shorter but -- neither could it be so reliable and irritating
It is my opinion that " the noise" is partner too or related to an engine vibration which ONLY occurs at tickover -- even 50 more rpm eliminates it to compete smoothness.
I removed the driving belt as a test / option eliminator and convinced myself that both problems had disappeared --- that then lead me to check every driven part in the belts drive train
I found that the main shaft pulley / damper/ shock absorber had more play in it's rubber boss than I was comfortable with
Therefore I bought a new pulley unit today and fitted it with a new belt too
( those are not cheap parts)
Sadly after refitting I find that the "noise" is still the same and I'm only slightly convinced that the tickover is smoother
Has anyone had / cured these problems please