Another misfire...?

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ricardof1rst3
Posts: 4
Joined: Tue Aug 27, 2013 5:48 pm
My Bike: Kawasaki ZXR400

Another misfire...?

Post by ricardof1rst3 »

Any pointers?

Engine running in the summer was fine.

In cold weather it has a permanent misfire, sounds like 1, maybe 2 cylinders BUT all the exhaust headers get hot(!). Very lumpy, when it starts on full choke it goes straight to 4k, reduce choke a fraction and it stops. Start again, lumpy, play with choke and it hunts around 2k, maybe ticks over about 1k but struggles then stops. Repeat and end up flooding it. Wait, start again. I recall when I had one new (30yrs ago) that the choke was all or nothing. Plugs are new, I am suspecting carbs or ignition/coils ... any ideas?
1983 DT100 | 1985 TS125X | 1986 GPZ600R | 1987 GPX750R
1988 FZR1000 | 1989 FZR1000 EXUP
1991 ZXR400 | 1993 CBR900RR
1996 ZXR400 | 2000 CBR600 | 2004 CBR900RR
2013 ZXR400
2021 K1600GT SE (I know, old git alert - still got the ZXR though)
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