Originally Posted by wing2pc
I have a 2005 K1200LT with less than 3k miles. This is my first BMW bike. Is it normal for the bike to idle a little uneven and rough? The tach needle jumps back and forth between 1000 and approximately 950-975 rpms. I especially notice my right handgrip shaking quite a bit more than the left. Shouldn't there be a steady smooth idle along with the tach needle remaining at 1k rpms? What could be the cause of this? What can be done to get this idle to run smooth and even? Thanks.
I have a new 05 with a little less miles than you. I also did not feel the LT was idling as smooth as it should have been. Last weekend I pulled the stock sparkplugs (surprised at the condition of the plugs for such short service) and replaced them with NGK Iridium (DCPR7EIX .032 gap). It was the same thing when I first purchased a new 03. This plug eliminated my idle problem on it as well. The LT fuel mixture is very rich,as you can tell by the carbon buildup on the tail pipe. Plus we are in the break-in period still and you will find the LT engine does get smoother with time and further along the break-in period. Took a ride yesterday, and today, and the idle was rock solid. I can't explain it but the LT just seems to run better on these plugs for me. I assume they are producing a better burn over the stock plugs. Are you running premium gas as well? It also would not hurt to mention this concern to your dealer (so it's on record) in the event you have a more serious issue that results in warranty work later.
Hopefully this will not turn into a sparkplug debate.
May we never find the end of the road!
The Spark Plug Serious Enthusiasts Rely On
Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.
NGK's new Iridium IX is the personification of these qualities and takes premium performance spark plugs to a new level. A level that is expected from the world leader in spark plugs.
The future has never looked so good.