The VECI ( Vehicle Emissions Control Information ) sticker in your engine
compartment will show the spark plug gap
1990 ford truck no spark
.044 inch
That would depend on what size engine you have
The Ford 5.4 liter V8 engine is a ( GASOLINE ENGINE )
.044 inch
.044 inch ( for the 460 in a 1988 Ford truck , according to www . motorcraft . com - no spaces )
If the check engine light is flashing with the engine running , that means a spark plug misfire has been detected
The 2008 Ford Mustang has a V6 engine.
The 2008 Ford Explorer has a V6 engine.
The 2008 Ford Expedition has a V8 engine.
The 2008 Ford Taurus has a V6 engine.
The 2008 Ford Edge has a V6 engine.