Can the rear engine have issues with rain?

[pwolfehagen]

Here is the update. Pulled all the plugs and found water in all cylinders. Cycled with WD40, cleaned and dried plugs, reinstalled and it fired right up. Is there any good reason that the air filter is wide open and facing up? It sure does a good job of catching water to be ingested by the engine. I can certainly come up with something on my own but is there an approved mod to fix this?