Hey guys I frequent here often but don't post.I don't know where else to look.2000 ford excursion v10 4x4143k milesStarted sputtering and not sounding good.Looked and one cool pack had broke and no longer functional .Unhooked it and truck runs great, sounds great but a little down on power but not very noticeable.Drove to advance got a new coil pack and installedStarted truck back up and it sounds terrible again.Unhooked it and it sounds find again.I don't have the tools to remove spark plug.Why would it run great with 9 cylinders but when putting the oil pack back on it runs like crap again?Thanks for any advice I know this isn't right section but no one at advance could help.
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