Replaced the plugs, wires, coil. Ran great for two weeks! This week started again. Runs fine cold. After warming up (about 3-4 miles) runs rough, idles rough, misfires throwing codes P0302, 304, 306. No gas smell, but do smell exhaust while sitting idle. Noticed some holes in catalytic converter. What's confusing us is the fact that the misfires are not consistent. Always misfires in the morning after warming up. But then runs great after sitting for an hour or so. Misfire driving home from work after sitting for several hours.
Saturday, December 20th, 2008 AT 10:30 AM