Check the Vehicle Emissions Control Information ( VECI ) decal located at the
front of the engine compartment ( it will show the type of spark plugs to use
and the spark plug gap )
The spark plug gap for a 1983 Ford Ranger 2.8L is .044"
For what year ?
.054 for 4.0 V6
The spark plug gap for the 2.3 litre 88 ranger is .035. This information can be found on the decal inside the engine compartment.
spark plug gap on 1990 ford ranger 4.0?
.042 to .046 inch (according to the 2000 Ford Ranger owners manual ) spark plug gap for the 3.0 L - V6 engine
The proper gap for the 2000 2.5L Ford Ranger is .044"
The 2.9 L V6 used in 1986 to 1992 Ford Rangers spark plug gap is ( .044 inch )
.054 inch
.052-.056
The 2003 Ford Ranger Owner Guide shows .052 inch to .056 inch spark plug gap for the 4.0 liter V6 engine
.044 inch for the 3.0 liter in a 2002 Ford Ranger