I hate when a totaly unrelated thing (seemingly) throws you
off of the real problem. Sitting for 2 months with how much gas?
1/4 or less is bad, was it outside, raining, hot and cold???
you might have a water build up that clogged the filter, remove
it and blow through it to see if it is plugged up, blow in the exit
side of the filter and catch the fuel that comes out, see if you
got a water problem, or any other junk that comes out.
If it is hard to blow through, replace it, if you found water, crank
the engine with the fuel line in a bucket and flush the water/crap
out before you put a new filter on.
Hope this helps
Darrin