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Spark Plugs and Wires

What is the gap on the spark plugs on a 1985 Mercury Marquis with a 302 V8 5.0 engine?

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2004-11-07 10:14:03
2004-11-07 10:14:03

.050

1

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According to one of Fords websites : For a 1993 Mercury Grand Marquis , 4.6 liter V8 engine : ( the spark plugs are gapped at .054 inch )

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( 8 spark plugs ) for your V8 engine

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The 1991 Mercury Marquis spark plug gap is .034. Most spark plugs will be pre-gapped by the spark plug manufacturer.

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maybe someone has a picture but the general rule if you want to find them is follow the leads that will take you upto the side of your engine where the spark plugs are

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The plugs are under the coil. Just remove the coil and there they are.

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Start with the ign. wires and the spark plugs.

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The spark plugs on a 1999 Mercury Cougar are located under the cover of the engine. The spark plugs should be changed approximately every 60,000 miles.

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Each spark plug has a coil on the top. Just remove the coil.

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C.O.P. ( coil on plug ) They are under the coil's.

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The spark plugs on a 1999 Mercury Cougar are located under the cover of the engine. The spark plugs should be changed approximately every 60,000 miles or so.

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.050 inch according to motorcraft.com but my Chilton repair manual shows .044 inch

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Change the spark plugs, air filter, fuel filter, that's it. Of course, engine oil and filter.

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A V6 engine in a Mercury Sable takes ( 6 spark plugs )

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The detection of engine oil on the spark plugs of the 2000 Ford/Mercury Grand Marquis is indicative of a mechanical condition. This is a common symptom of worn valve seals or possibly the guides. This wear may be allowing for excess oil to flow back into the cylinder. This can result in emissions problems and or higher engine oil consumption.

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Check the Vehicle Emissions Control Information ( VECI ) decal located in the front of your engine compartment ( it will show what type of spark plugs to use and the spark plug gap )

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According to one of Fords websites : For the 4.6 liter V8 engine in a 1994 Mercury Grand Marquis : The spark plugs are gapped at ( .054 inch ) * confirm with the Vehicle Emission Control Information ( VECI ) decal located in the front of the engine compartment

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According to one of the Ford websites : For a 1993 Mercury Grand Marquis , 4.6 liter V8 engine : The spark plugs are gapped at ( .054 inch ) * confirm with the Vehicle Emission Control Information ( VECI ) decal located in the front of the engine compartment

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no they are not in the way at all but the air box intake needs to be removed to get to the left side spark plugs

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According to one of the Ford websites : For a 1987 Mercury Grand Marquis , 5.0 liter / 302 cubic inch V8 engine : The spark plugs are gapped at ( .050 inch )

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Check the Vehicle Emission Control Information ( VECI ) decal located in the front of the engine compartment ( it will show the type of spark plugs to use and the spark plug gap )

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