Car is missfireing and when I give it gas it will not pick up speed and falls on it's Face weather its cold or hot it just idles with a missI have changed plugs and coil pack

Asked by Oct 10, 2015 at 04:52 PM about the 1997 Mercury Cougar 2 Dr XR7 Coupe

Question type: Maintenance & Repair

The previous weeks when I
drive it more than 3 miles it
want to fall on it's face when I
give it gas .And misses

1 Answer

27,795

sray all vacuum hoses/intake/egr area with carb cleaner when it is at idle to see if the rpms change...sounds like its running lean.. (falls on its face)..do you check the fuel pressure and change the fuel filter?

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