I am hoping one of you guys can help me out here. I have a K9 GSXR-750 with 13,000km on it. I bought it brand new. Anyway, lately, she has been idling very rough. After I start it up, the idle drops to below 1000rpms and cuts out, and its making this god awful spluttering sound like its really strugglung to stay started!
- This is usually the first attempt I try to start it. When I try again, she actually wont start at all unless I give her a little throttle and force her to rev at 2000 or so.
The only crazy thing is, is that some days she will start up fine and idle really well, and others, she does exactly as I described above. Every time I call a mechanic, they are unsure what the problem is, as it never seems to be doing it when I take it to them!
Anyway, after keeping the throttle engaged for 5 minutes or so, I might be lucky and she idles at a very low 900rpms and sounds like she is on the brink of cutting out. Taking her out on the roads can be become quite dangerous because she wont idle. As soon as I hold in the clutch to stop at a set of lights, she will cut out. So I always have to have the throttle engaged.
She is my daily commute so the bike is never sitting there for more than 24 hours. What the hell is going on? Is it an issue with the ISC valve? Something else?
Anyone have an ideas or in the same boat?