Been washing your engine? Don't! Blow out the water and install a new coil. Check all the other cylinders while you are at it.
If it's coolant your intake manifold (plastic) has most likely cracked and is leaking in the cylinder. Those engines are notorious for that! Hope that helps! Jim
2005 Mercury Grand Marquis LS Premium
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Maintenance & Repair
got a grand marquis with the 302 replaced the fuel pump shortly after the third spark plug in firing order started leaking gas any idea why
2003 Mercury Grand Marquis
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Maintenance & Repair
I was driving check engine light came on throwing codes for cylinder 2, 6, and 7 is misfires. I have switched around the coils to see if the misfires followed no change still comes up the same code...
1998 Mercury Grand Marquis 4 Dr LS Sedan
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Maintenance & Repair
My check engine light is on diagnostics says third spark plug my third spark plug just spins left and right how do I get it out
1998 Mercury Grand Marquis 4 Dr LS Sedan
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Maintenance & Repair
I Have A 1999 Grand Marquis And There Is Water Coming Into The Back Passenger Floor And I Dont Know Where Its Coming From Can Someone Help?
1999 Mercury Grand Marquis 4 Dr LS Sedan
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Maintenance & Repair
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