ENGINE DATA
Engine
3.5L V6 engine
3.5L V6 EcoBoost™
engine
Cubic inches
214
214
Fuel
See
Octane
recommendations
earlier in this chapter.
See
Octane
recommendations
earlier
in this chapter.
Firing order
1–4–2–5–3–6
1–4–2–5–3–6
Spark plug gap
0.052–0.056 inch
(1.32–1.42 mm)
0.033–0.037 inch
(.84– .94 mm)
Ignition system
Coil on plug
Coil on plug
Compression
ratio
10.3:1
10.0:1
Engine drivebelt routing
3.5L V6 engine
1. Short drivebelt is on first pulley groove closest to engine (not
applicable to vehicles with electric power assisted steering).
2. Long drivebelt is on second pulley groove farthest from engine.
Maintenance and Specifications
371
2012 Flex
(471)
Owners Guide, 2nd Printing
USA
(fus)