Hi My 98 ZX6R seems to cut out when I drive in rain, as if it runs on 2 or 3 cylinders. Then 'n stop under a bridge and try to warm up the engine by keeping revs high to get rid of the moisture, after that it seems fine for a while. Is there a known way of preventing this and what exactly causes this? Hope to hear from you soon! Thanks!

I want you to take a waterproofing silicone spray and on your electrial spray your plug wires and coil pack . Then try it in the rain , this is going to be a process of emlinanation , you can try it
with a water hose but it may not have the same affect , because of the hard road spray coming
in and up. If your bike runs well then you must change wires and coil if solid system if seperate
try wires first and coil pack last, but before you buy anthing take your spray and spray as much
of your wirining harness as you can . This bike has some years on it so check every spot where
yuor harness touches the frame, look for exposer and crack that water could get in, if you are not
sure about it take a piece of clear plastic tubing that will fit over the harness . you can do this by
using a utility blade and slice one side of the clear tubing from one end to the other , put 2 small
tie straps or several tie straps then spray with waterproofing. One other way to check for spark
leak from coil and spark plug wires is to wait until it is really dark then start your bike cover the
head light so it is totaly dark around the motor area . take a break set in the dark and let your
eyes adjust to the dark be patient , now look at your coil , wires , around the plug . do this before
you spray anything . If electrial fire is jumping you will see it . if it is jumping then do not spray
just change the wires , Ok Good luck

Replace the HT Spark Plug leads and caps. It sounds like they are arcing in the wet.
Hope that helps and ride safely.