94 Honda civic fuel flooded engine

Hi,
I had been having some problems with my Honda Civic 1.5 LSI (94-95)
[UK], for a couple
of months now.
The car would Hesitation/shaking when accelerated, in the morning. A
few times this has happened
at nearly the same spot while driving to work (some 200m from home).
Once, the car completely stopped (at that 200m spot), and will not
immediately start. The
ignition will work, but it won't catch and the car won't start. The car
did start after some 15 mins
rest.
Last weekend, I couldn't start the car at all (in my driveway). Called
the mechanic, when he came
he immediately told me that it was a flooded engine. He told me that
the early fuel injection
engines (as in my 94 Honda), has a rain sensor which pumps more fuel
when it rains.
Recalling, it was on raininy days that I did have the problems.

My question is, since I never had these problems prior to two months
ago (even in rain),
do I have a defective sensor which needs replacing (as the car is
getting older now).
Or, as the mechanic pointed out, this is inherent in this car and I
have to live with it.

Many Thanks in advance