It could be that where the upper large round seal is supposed to fit over the metal edge of the "cup" at the top of the spark plug well it is not fitting properly over the edge. I have seen where it gets scrunched (bent) and is not sealing right. Try to use your finger and make sure it fits smoothly all around. As per another post you can also use dielectric (silicone) grease in the groove of the rubber seal to improve the sealing. It is bad news to have water in there because eventually it will destroy the spark plug wire and make the spark plug very hard to remove. You might also have a cooling system leak which is getting the water in there, is it happening after it rains or does it happen even if it doesn't rain? David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "delorean3543 <Delorean3543@xxxx>" <Delorean3543@xxxx> wrote: > I have a new set of plug wires from PJ Grady but every now and then > the space around the spark plug fills with water and my car starts > to miss. After drying it out it runs great. Is there any way to > prevent this? > Jonas > 3543