"DGB" <dgbtfs@comcast.net> wrote in message
news:1oGdnee8Gf29V3fcRVn-gQ@comcast.com...
> 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
>
>
Two things are combining to do this - pressure build-up in the crankcase and
a leak in the seal for the #4 spark plug well.

First, give the crankcase ventilation system a good cleaning. This means the
PCV valve (replacement is better than cleaning since you already have
symptoms), cleaning / checking / replacing hoses and cleaning out the
fitting where the PCV hose goes to the manifold.

If the plug wire still pops out, you will need to replace the spark plug
well seals. It isn't a big job, but I'm sure you need to remove the valve
cover to do it. That means replacing the valve cover gasket, also a minor
job and expense. The only special tool needed is an inch-lb torque wrench.

Mike