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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: w. h. hoon on October 08, 2011, 12:29:22 PM

Title: early 85 k100rs vaccuum switch
Post by: w. h. hoon on October 08, 2011, 12:29:22 PM

Good morning;
I  am the second owner of an early 85 k100rs (euro.) It starts and runs beautifully.When I did my first preventive maintenance, in 2005 the vaccuum switch wire  was unhooked , I replaced the hose and hooked it back up. Then my exdealer attempted to do a tune-up. long story short, since then I got the internet, discoverd B.M.W. discarded the switch all together,so I did also . I can find referance to the switch in my climers book, but no actuall explenation as to it's function.
Was it a joke? Should I run it? It is basically normally open and completes ground with the slightest of vaccuum applied. My timing now, checked with a degreeable timing light is 11 btdc. Before I go any further wondering which route to go. Thank you very much!

Title: Re: early 85 k100rs vaccuum switch
Post by: Phil Marvin on October 09, 2011, 01:53:48 AM

Hi,
    BMW discarded the switch and dealers were instructed to bypass it.  That's probably why yours was unplugged.

Title: Re: early 85 k100rs vaccuum switch
Post by: w. h. hoon on October 10, 2011, 04:57:34 PM

Thank you very much I appreciate your time . I was kinda hopeing for some theory so I could test for myself, but not a clue as to function. Thanks again!