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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Zorman on November 13, 2016, 06:31:51 PM

Title: 1986 K100 air intake fine tuning
Post by: Zorman on November 13, 2016, 06:31:51 PM

Need to balance my air intake at the throttle body. There are some dust caps next to the adjustment screws (see attached picture). Does the fit of these caps influence anything or they just keep dust out? A  few of them have cracks and do not fit super tightly any more and I was just gonna get replacements from the local hardware store. I don't have a BMW dealer on the island I live.

Zoltan

Title: Re: 1986 K100 air intake fine tuning
Post by: The Mighty Gryphon on November 13, 2016, 06:33:45 PM

A tight fit is crucial to a smooth idle.  Replace them.  Hardware store caps are ok as long as they fit snug.

Title: Re: 1986 K100 air intake fine tuning
Post by: Zorman on December 03, 2016, 03:52:39 PM

Thanks for that info !  :2thumbup:  Got caps that fit, not fan of the color, but can't be picky for $0.25/ea.

Title: Re: 1986 K100 air intake fine tuning
Post by: Laitch on December 03, 2016, 04:04:42 PM

Quote from: Zorman on December 03, 2016, 03:52:39 PM

Got caps that fit, not fan of the color. . .

Those are almost exactly the color and size of the fruit from Viburnum opulus var. americanum, Zorman. Don't be surprised to see Robins perched on the side stand staring intently up at them.

Title: Re: 1986 K100 air intake fine tuning
Post by: Martin on December 03, 2016, 04:19:08 PM

To set them off draw little smiley faces on them with a fine marker. That will confuse the pondering Robins.
Regards Martin.

Title: Re: 1986 K100 air intake fine tuning
Post by: TrueAce on December 03, 2016, 09:56:46 PM

I prefer black magic marker.  :euro

Title: Re: 1986 K100 air intake fine tuning
Post by: jakgieger on December 03, 2016, 10:15:01 PM

Zorman,

In your picture, it looks like you are developing cracks in these (http://bmwparts.englemotors.com/p/BMW_1989_K100RS/Bushing/42779701/11611460755.html)?  Are you experiencing other signs of idle/power irregularity?