DGB wrote:
> My 95 Civic LX started "missing" three days ago. It's been raining a lot.
> Upon inspection, the #4 plug wire had popped up out of the valve cover -
> approx. 1 inch and was wet.
>
> After drying the wire off, and drying out the hole, it ran OK for 1/2 day
> and then popped off again. I swapped #3 & #4 spark plugs, and the problem
> stayed in #4. When the wire is re-inserted, the problem goes away, but
> returns shortly thereafter.
>
> Any ideas?
>
> Thanks!
> DGB
>
>
you physically swapped out both of the spark plugs, not just the plug
leads? and they're both screwed all the way in properly? try measuring
with a piece of rod down the hole against the plug top to ensure #4 plug
is screwing all the way home. if not, you need to CAREFULLY chase the
head thread.

the only times i've seen this kind of thing is when the plug has blown
either completely or partialy out of the head - usually because it
wasn't screwed in properly in the first place. the plug leads
themselves, while close, are not an airtight seal, so minor leakage from
the valve cover gasket should not be a big deal, but gross leakage from
the cylinder direct will blow a lead off no problem.