MOTOBRICK.COM

TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: 3dachshunds on May 20, 2026, 08:13:42 PM

Title: Does this engine sound normal to you?
Post by: 3dachshunds on May 20, 2026, 08:13:42 PM
I’ve been working on 1992 k100rs since last fall and finally got the bike running (clogged injectors). I was super excited that I finally got it running, but didn’t actually ride until now. (New fluids, new tank innards, new spark plugs). I don’t like how it sounds at idle. It sounds to me either misfire or a problem with crankshaft bearings. It has hesitation at about 4.5-5k RPM, around 80MPH. It starts feeling sluggish. Please let me know what do you think.


https://drive.google.com/file/d/1Qqn2XgcRyBtIj7QKubrpFsX3cLhWUb_L/view?usp=drivesdk