Having problems with your 1986 Mercury Grand Marquis ?
Black smoke when start up then clears when driveing
\015 Fails emmishons cos its comeing out blck smoke and funning to rich\015
This happens on older motors when the valve seals go bad .go to local auto parts store and get some oil additice that stops smoke this should solve youre problem
Repair Help & Product Troubleshooting for 1986 Mercury Grand Marquis
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