Mechanics

84 GRAND MISSING

1984 Mercury Marquis • V8 2WD Automatic • 86,000 miles

I have an 84 Grand Marquis that is missing when I give it gas after I first start the car. It completely goes away and runs smooth after I drive about 1 mile. I changed plugs and wires and fuel filter.
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John soard
November 17, 2010.




Engine running rough or misfiring can be cause by the following:

http://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plug
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Manifold absolute pressure sensor

Rasmataz
Nov 17, 2010.


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