2004 Mercury Grand Marquis misfires

Asked by Aug 01, 2017 at 07:07 PM about the 2004 Mercury Grand Marquis GS

Question type: Maintenance & Repair

Check engine light came on and it was bogging
bad. Took it to AutoZone got misfire in 1 & 2. The
paper said to replace spark plugs and coil packs.
Did that plus threw in some Lucas injector cleaner.
It is still doing it. Help!

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