Engine   2.0L EcoBoost engine   3.7L V6 Engine  
Cubic inches   122   227  
Compression ratio   9.3:1   10.5:1  
Spark plug gap   0.027-0.031 in. (0.70-0.80 mm)   0.049-0.053 in. (1.25-1.35 mm)  

Drivebelt Routing
3.7L Engine
Drive Belt Routing
2.0L EcoBoost Engine
Drive Belt Routing
ALong drivebelt is on first pulley groove closest to engine
BShort drivebelt is on second pulley groove farthest from engine