Poor running in the wet?

[chunk166]

Just been out for a ride,i got caught up in a bit of heavy shower & my bike started to play up! it was struggling to accelerate in any gear,even on tickover it was a bit erratic. Whats around the front of the bike that would cause that,i'm not sure if it was the coils as there tucked up under the tank! Advice would be very grateful  :think :think :think


Cheers Ray