The 2007 Ford Focus owners manual shows , for both the 2.0 L and 2.3 L : ( .051 inch +/- .002 ) or in metric ( 1.3 mm +/- .05 )
For the US model Ford Focus (2006), spark plugs are the only thing to replace. There are no spark plug wires. Ford recommends spark plug replacement at 100k miles.
Take the old ones out, put the new ones in. DO NOT GAP THEM !
No.
.054
4
4
50,000 miles.
opposite end of the spark plug wire from the spark plugs
Yes ( the 2.0 liter four cylinder gasoline engine used in North America does ) on a 2009 Ford Focus . The four spark plugs are under the four individual ignition coils
.054"
No
Ford uses Motorcraft Spark Plugs