misfire

  1. L

    Misfire on 2006 CXS

    I have a 2006 Buick Lucerne CXS with the Northstar V8. I have been chasing a misfire for a while now. I am hesitant to make repairs ($$$)as it has 116xxx miles and needs front end work as well. First I had a p0305 code, misfire on cylinder 5. I was debating changing the coil on #5. Insetead I...
  2. F

    GM tech needs help, '88 Park Avenue VIN C

    Misfire on #3 cyl. 123,000 miles, regular maintenance, AC Delco parts. I have three 3.8's in the family, so I stock parts in the shop. I replaced the Magnavox ign module, Delco ign wires, plugs, coil pack & fuel filter mostly because of age & mileage. I did have one ignition module go out...
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