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Re: bmw-digest V5 #22

Hello all,
I'm contemplating a purchase of a 1987 635Csi, 77K miles.  The car has 
complete service documentation, although I haven't reviewed it yet.  This 
would be my first BMW after many years of hoping.  At any rate, I'd like 
to hear from anyone regarding their experience with that particular model 
or drivetrain.  In particular, I'm interested in things that I should be 
sure to check prior to purchase, general problems with the car, expected 
upcoming service needs related to the 635 generally and in that mileage 
bracket, and reliability/longevity that I should expect.  I'm told the 
car spent most of it's life in a heated garage without being driving 
through the harsh Rochester, NY winters.  So, the body appears to be in 
great shape.  The only things I noticed that seemed unusual are:
1) Engine makes a ticking sound, though it doesn't really sound like a 
valve.  Any thoughts?

2) Radio cuts in and out--I assume its a loose wire leading to the speakers.

3) Exhaust has kind of a throaty gurgle as it comes back down near idle 
after a rev.  It doesn't seem to be an exhaust leak.  Is the sound 
normal?  It sounds a lot like the popping noise of a turbo-charged car 
when slowing down after a downshift.

Your comments are much appreciated.

Jason Markel