Sometimes the starter motor turns but fails to engage the flywheel. What is actually failing? And, is 30 years of good service enough for this starter?
Sounds like, if there is one, the Bendix drive is shot. This is what moves the gear on the starter to the flywheel so the teeth will engage
81 Euro undergoing total nut and bolt restoration
pictures at: flickr.com/photos/bertsphotos
Here's how to R&R the starter on an M30:
http://www.mye28.com/viewtopic.php?f=3&t=100967
Dean
Lutz, FL
'85 635 CSi Euro #9402254
'87 Spider Veloce
'92 Spider Veloce
'08 350Z
Also a possibility of chipped and broken, missing flywheel gear-teeth.
Can be easily confirmed once starter is removed.
If you are going to remove it, replace it with an sr441x, smaller, lighter, higher voltage....so if you ever need to replace it again, it will be easier (though from the sound of it, replacement will be done by whoever you leave the car to in your will).
Rob E3
Hey Ron how goes it?
The lube in the solenoid is probably lacking along with the
magnet that pulls the spinning gear into the flywheel.
Make sure your battery is fully charged. A small drop in battery voltage can effect the magnet pull,
especially going thru the crazy starting circuit that BMW used in those days.
Good luck.
Just a heads up-- the my e28 instructions is for an M30 engine, not yours.
I'm probably going to replace the one in my M6 with an E34 unit. Need to start getting the car together...
Alright, half the job done.
See ya @ "Idiotfest" 2017
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