Check the Vehicle Emissions 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 )
.054 inch
According to one of Fords websites : For a 1990 LTD Crown Victoria police interceptor with the 5.8 liter / 351 V8 : The spark plugs are gapped at ( .044 inch )
The spark plug gap is 09.96 The spark plug gap is 09.96
spark plug gap for a 2.2l is 0.060"
.045 spark plug gap
0.32 gap spark plug
The spark plug gap is .054"
The Spark Plug gap is .045
Spark plug gap is .060
0.9MM with spark plug gap tool.
0.044 is your spark plug gap.