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
No.
.054
4
4
50,000 miles.
opposite end of the spark plug wire from the spark plugs
.054"
No
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.
About every 50,000 miles.
Wires and plugs constitute a tune-up. DO NOT gap the plugs, it will ruin the platinum coating.
Check the spark plugs and wires Do a compression test