Check the Vehicle Emission Control Information ( VECI ) decal located in the
front of the engine compartment ( it will show what type of spark plugs to
use and the spark plug gap )
According to the 2002 Mercury Cougar Owner Guide : For the 2.5 liter V6 engine : The spark plug gap is ( .054 inch ) *** confirm with the Vehicle Emission Control Information ( VECI ) decal , in the front of your engine compartment ***
.054
Spark plug order? there is no such thing.
A 2002 Mercury Cougar 2.5 liter plug wire diagram can be purchased from your local Mercury Cougar. It can also be found at most auto parts stores.
is 54 gap for a spark plug mercury mountanier 2002 4.6
According to one of Fords websites : For a 1969 Mercury Cougar ( all factory available engine sizes ) ( .035 inch spark plug gap )
Straight forward job but be careful on replacing the plugs as they are deep also remember which lead goes where
You can find the correct firing order for your 1987 mercury cougar at www.coolcats.com, it is a website dedicated to the cougar and thunderbird.
0.054 for 1999 to 2001 V6.
According to one of Fords websites : For the 1992 Mercury Cougar , 3.8 liter V6 engine : ( the spark plugs are gapped at .054 inch )
According to one of the Ford websites : For a 1988 Mercury Cougar , 3.8 liter V6 engine : ( the spark plugs are gapped at .054 inch )
The Spark plug location on the 2001 2.5 liter dohc is under the valve cover.