Clean spark plugs

[Streffpilot]

Hi, iv got my engine running (look at signature) but the plugs always come out looking like brand new clean. I know it's a gasket letting water in, but I don't remember which ones you guys always say that it is, so could someone remind me???

Thanks!

 

[Moody Blue]

Re: Clean spark plugs

All the plugs, or specific ones?