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ENGINE SPECIFICATIONS
Engine 3.5L V6 engine 3.5L V6 EcoBoost engine
Cubic inches 214 214
Fuel
See Octane
recommendations in
the Fuel and Refueling
chapter.
See Octane
recommendations in the
Fuel and Refueling chapter.
Firing order 1–4–2–5–3–6 1–4–2–5–3–6
Spark plug gap
0.049-0.053 inch
(1.25-1.35 mm).
0.0295–0.0335 inch
(.75– .85 mm)
Ignition system Coil on plug Coil on plug
Compression
ratio
10.8:1 10.0:1
Engine Drivebelt Routing
Capacities and Specifications 361
2015 Flex (471)
Owners Guide gf, 1st Printing, October 2014
USA (fus)
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