air filters

["MonteMorris" <mmorris@nemr.net>]

Do the foam accessory air filters (not K&N) sold by Moss need oiled?
Could installing them after tuning the carbs make the mixture overly rich?
After installing and fine tuning the HIF's and having the car running/idling
fine for over an hour, I reinstalled the air filters and the next day the
car started only with the choke clear out and died when it was pushed back
in. Plugs were black with soot.

Monte