lean miss, or?
I bought my 2003 Vulcan not running. I read lots of threads on here about carbs, fuel, etc. I disassembled and cleaned the carbs, put them back on and adjusted per the forum. The bike runs well below 4000rpm and over 5500rpm. But it stumbles and backfires in that rpm range whether cruising down the highway or accelerating. I'm wondering if I have a lean miss. I'm near Santa Fe, running between 6000 and 7000 feet altitude. The carbs are box stock, jet-wise. I've been using sea foam and sta-bil. The problem is there with a full tank of gas. I've had it up to 90 mph and no miss. I'm wondering if I need to go larger on the jets or possibly shim the needles. Does anyone have any suggestions or experience with a similar problem? Any help would be appreciated. oh, yeah, I also trimmed the vent hose at a 45 degree angle. Thanks
Last edited by clemww; 09-01-2013 at 10:55 PM.
Reason: add info