Join Date: May 2008
Location: Yay Area
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Rough Idle and poor response...out of ideas!
Quick history I've got a Bazzazz FI installed, but that's about the extent of my fueling related mods. The bike ran great for weeks after that installation, and then all of a sudden one day began vibrating badly and has been ever since, along with rough idling and nearly dying at warm up (but hasn't yet), and when riding there's almost no throttle response where before cracking the throttle a little the bike would take off. Though the bike still makes power at high rpm and throttle, and can lift the front wheel in first or second. This makes me think it's something idle-related like an IACV issue? So far I've replaced the plugs (just yesterday), checked all connections where I had to plug in the Bazzazz inline (injectors and sensors), lifted the tank out while running the bike to see if there was a pinched fuel line, and nothing has helped.
So I've run out of ideas short of the IACV. Is there a way to test that it's not the problem? The service manual doesn't explain it all except to take it out and see if it moves. That doesn't really help, obviously it works somewhat or else the bike wouldn't run. What is it that controls the IACV, the MAP sensor?
Anyways, I'm pretty bummed I was hoping replacing the plugs would do the trick, and don't know what to try next.
Dave Moss Forks - Ohlins shock
Goodridge SS lines - Vesrah RJL's
Arrow headers w/ Devil can
Woodcraft frame sliders - Demented swingarm spools - Rushkie-patented FE and guages