Is it normal for an '02 ZX-6R to run like it's a 2 cylinder on cold mornings?
I first noticed thhis issue the other day when I went out for a rip and it just started to snow. If I cruized along at about 120 (6000 Rpm) for about 5 minutes, then tried to accelarate, the bike really bagged for a couple seconds then took off. Having had a little bit of flying experience, I attributed it to carb icing... it sounded and felt much the same.
Then this morning, there was one wicked layer of frost on the ground.. apparently humidity was at about 95%, I start the bike with the choke on and all is well... until I kill the choke. I didn't take the choke off until the temp was reading 45 degrees.. but as soon as the choke went off.. the bike stalled. So with a 'whatever' I restart the bike.. keep the revs up and head for the street. On my way to work... every stop light I cam too the damn bike either stalled or made a valiant effort at it. It seriously rumbled and just generally wasn't healthy. I got to work and figured I'd see how it was at lunch after the temperatures warmed up a bit, and she ran like a top... took it out for a good run... not problems at all.
Any ideas what this could be? And if it is carb ice, is there any way to minimize the effects? Besides getting an '03 or better with FI?? haha
Sorry this is so long.. but I wanted to try and clearly define what is happening. Oh.. and I run Chevron 89 octane gas in it.