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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: schrocketeer on October 15, 2025, 06:30:47 PM

Title: Auxiliary Air Regulator (AAR), BMW #13 64 1 459 119
Post by: schrocketeer on October 15, 2025, 06:30:47 PM

Grok (Twitter/X's AI tool) seems to think my '86 K100 has an Auxiliary Air Regulator (AAR). Am I missing something, or is Grok hallucinating?
It says cleaning/replacing the AAR may fix my "hold down Starter button to operate" issue.

Sunday I was able to ride it, holding the Starter button the entire time. Rather awkward. Video of that run available at https://www.facebook.com/marketplace/item/2932372703613840

Title: Re: Auxiliary Air Regulator (AAR), BMW #13 64 1 459 119
Post by: Laitch on October 15, 2025, 07:48:37 PM

Ask Grok to explain itself. What does it do, Grok? Where do I find it, Grok? WTF, Grok? Are you serious, Grok?
Holding down the starter button can enrich the fuel mixture, so it would seem that the engine might be running too lean—one of the classic symptoms of air leakage into the intake air stream. Of course, defective electronic connections in the FICU or ICU could also cause lean running.