Join Date: Nov 2004
Location: Gruene Texas .. DL650K4
BLASTIT!!!! DID MY WRENCH GOOF MY DL650????
I have a long, long, long history of breaking things that everyone says are unbreakable [computer biz, personal life, motorcycles... you name it]
so, my k4 dl650 has always been good, but not great... since the beginning with zero miles it has run a little off of 'purrrrfect', lower mpg than most, lower top speed.
so, after delaying a long time I take it to my trusted mechanic [grew up in the harley world, but lotsa metric race-bike experience, full machine shop, you get the picture]... I had an accumulated list of changes I wanted done, and a TBS, leave the tubes in place.
I get it home and not 15 seconds after firing it up i knew something was amiss. it didn't idle right... very rough. for the first time the handlebars are waving in the air on idle. I let it warm up completely, rode around a bit.... if i put the gas to 'er its ok, not terrible, but the roughness is there no matter what. THEN, the most telling symptom... I noticed that the idle was very lumpy, so i twisted the idle screw to bring a constant 3,000rpm drone. The bike cannot hold a steady RPM.... it moves around on its own. This is fully warmed up. It can't maintain 3K, it moves to 3300 or so, then undershoots to 2800 then back to center, then oscillates again. its struggling to overcome something amiss. ALSO, MUY IMPORTANTE: when I listen carefully to the exhaust sounds during this mess, i hear a faint 'cough' every four or five seconds ... its like "drone drone drone <bump> drone drone <bump> drone-drone-drone-drone <whumpppp>
any clues????? HELP!
If evolution is valid, why do I still bite my tongue occasionally?