First of all, apologies to the mods if this is in the wrong place. Not really sure what category it belongs under at present, and I was hoping more people might see it here.
Anyway, the basics: last rode the bike (Hyosung GT250R, EFI) on Saturday. No problems; everything running fine. Go to jump on it today, and it cranks but won't start. Headlights seem nice and bright, starter motor sounds normal and keeps turning over, so I'm thinking the battery is ok. It does the usual startup process: fuel pump primes - at least I think that's the loud whirring noise, I may be mistaken on this one - and the tach needle cycles from max to zero; no warning lights or anything out of the ordinary.
I've been trying to crank it every so often, and a couple of times it has caught after 5 or 6 seconds of turning over, but idles extremely lumpy (under 1k rpm) for a few seconds then dies again. On my last attempt to start it it wouldn't catch at all, and the tech needle was going a little crazy, which was strange.
I'm hoping someone might have some idea of what might be at fault. I've thought about checking the spark on someone's advice, but it looks very difficult to get at the plugs without dismantling a lot of stuff (if anyone who knows Hyosungs has any advice in this it would be helpful as well).
Thanks guys!
Bookmarks