Question about 2000 Mercury Grand Marquis

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Oil leak found in one out eight spark plugs we changed on a 2000 mercury grand marquis

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Edwin

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If oil was found on outside of plug oil may be leaking from valve cover gasket and it should be replaced

Posted on Jan 07, 2011

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My 2003 mercury grand marquis has what I describe as lifter chatter for about the first three seconds after starting. Should I move up in oil weight? or take to shop?


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I hav 2000 grand marqius ls - When I changed spark plog thei found engine oil on it particularly cylinder No. 3 and 4 that the car was Shaking before I change the spark


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Where are the spark plugs located on a 2000 Mercury grand Marquis?


There are eight COPs (coil-on-plugs) to remove. Using a 7mm or 9/32" socket, remove each bolt securing each COP to the intake manifold on top of the engine. Remove all eight COPs, and the spark plugs are underneath. When replacing the spark plugs, use only the proper Ford/Motorcraft plugs, even if they cost twice as much as the aftermarket ones. You will avoid further headaches this way. Hope this helps.

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1 Answer

Location of spark plugs 2000 grand marquis


the plugs are down inside the valve covers under the ignition coils, there is one coil fo each spark plug

Oct 14, 2009 | 2000 Mercury Grand Marquis

1 Answer

2000 Mercury Grand Marquis


if the moisture was on the outside of the plug most likely water got into the hole. this causes high stress on the coil and causes them to break down. If the plug was replaced and the symptom returned
i would replace the coil.

Dec 19, 2008 | 2000 Mercury Grand Marquis

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