missing

[coxy]

Had a problem with my 3.2 missing on one cylinder. Afer checking all leads etc, found that it was No5 cylinder spark plug fouled up ( to many short drives) changed plugs and fine, yet now its missing again. Why would same plug keep fouling. Also what is the life span of a set of ignition leads?? Could a faulty lead not be helping??

[Tobra]

maybe try check the resistance on that plug wire with an ohm meter