carb problem / questions
Posted: Sat Apr 03, 2004 10:27 pm
I have a stock 97 KLR 650 with only 10,000 miles on it, that's been running great until I let it sit for two months without draining the carb.
... So after charging battery, I could start my KLR with the "choke on", BUT the engine would NOT rev up. It consistently died when I opened the throttle. I found that after the engine was warmed up and I put choke "off", I could THEN get engine to idle AND the engine would rev up in response to opening the throttle. ... Then on test drive, I found my bike was NOT so dependable as it cut out now and then / and died when I put the choke on.
Anyone else out there ever had this particular problem? I'm pretty sure I've always been able to rev my KLR 650 engine with the choke "off" or "on" (open or closed) before. And it I forgot about it, I could drive it with the choke "on"! Isn't that the norm with your stock KLR?
Well I did a spark plug change, valve adjustment check, changed two valve shims, changed oil & filter as it was time for a full maintenance too.
Then BACK to carb: I took it off and kind of quick cleaned it with Berrryman's B-12 carb cleaner. It looked spotless in the float bowl, but a little dirty on that small coaster enricher chamber on side of carb. I took carb apart and blew compressed air through all jets and little holes I could find (except I did not remove plug to idle mixture screw). Diaphram looked good and whole. I put it back together and IT RAN GREAT again for a day of driving in the hills. NOW a few days later, the problem has returned (dam), and seems worse. In looking at the slider with mirror via removing air air cleaner, I see it moving up slowly when I can get the engine to rev, and it sometimes vibrates a bit at idle.
I'm jazzed at finding this group and KLR 650 info. on the web, which I've been studying.
Do you think I'm on right track going back to carb and getting at that idle mixture screw (which has a plug over it)? or - Does anyone out their have any other ideas for me to check out and pursue? Has anyone out there ever had this particular problem happen to your KLR?
Thanks in advance, Bill