According to one of Fords websites : For a 1986 Ford Mustang , 5.0 L / 302 cubic inch V8 engine : The spark plugs are gapped at ( .050 inch )
The same way you gap spark plugs for any car that uses spark plugs.
( .050 inch ) - spark plug gap for 1986 Ford Mustang - 5.0 liter engine
Talk2DIY Automotive - 1986 Spark Plugs was released on: USA: 3 March 2004
There could be so many problems. Batery, starter, alternator, serpentine belt, no spark... the list is endless. spark plugs? spark plugs?
next to each spark plug there should be a 5mm tall...T or L (trailing or leading) the spak plugs are different on the electrodes
.044 inch
.035
.32 to.35
Ngk d9ea
Toyota spark plugs from dealer pre gaped
.050 inch , according to fordparts.com