Hi-
Number 6 cylinder is the cylinder closest to the firewall. For a misfire I recommend checking the coil and spark plug. The coils are known to fail.
Mr. Williams.
just take it to your mechanic who will fill it with watter and by using a radiator pressure test tool will immediately give you the answer and the cost of repair.
Have you traced the hot wire up to the source to see where is loses voltage, you have to do that. You will need a 12 volt test light, about $5 at any auto parts store or sears.