suzuki gsxr 400 wont start

[chelskii-2010]

i have a suzuki gsx with a gsxr 400 engine in it, the bike will start after a long time on the starter, it will then fire up slighty missing, like its firing on 3.\r\nive took the plugs out and can see that 3 of the plugs are being used and the other one isnt. \r\nall 4 plugs are brand new. could you help?

[N cee thirty]

dodgy coil/HT lead then ?
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Robby]

Sounds like it. Make up new HT leads, if you still get the problem try swapping the coils around and seeing if the problem moves cylinder.

Those engines are never the toughest thing, but the electrics are weaker than the mechanicals. The pickup coils are notorious, but that would affect more than one cylinder.