<snip>
>     My wife had some coolant problems today and it turned out to be
that
> coolant was leaking (spurting) out past the o ring that is around the
> temperature (level?) sensor that gets screwed into the coolant
reservoir.
> So... I'm hoping that it is just a simple O-ring issue and not
anything to
> do with combustion gases.
<snip>

When I bought my Westy I had a similar problem.  No doubt the PO had
experienced some overheating problems .... probably enough to blow the
sensor out of the tank.  Unfortunately, he reused the old sensor and the
plastic threads were badly damaged.

Inspect your sensor's threads .... you may have to replace it.  BTW ...
my tank was fine.

I found that when I put the new one in, a bit of vasoline helped it
screw in much easier and probably helped the O ring to seal.

Mike
'84 GL 7 pass
'85 GL Westy