ENGINE DATA
Engine
2.5L I4 engine
3.0L DOHC V6 Duratec
engine
Cubic inches
152
183
Required fuel
87 octane
87 octane
Firing order
1-3-4-2
1-4-2-5-3-6
Ignition system
Coil on plug
Coil on plug
Spark plug gap
0.049–0.053 inch
(1.25–1.35mm)
0.045–0.049 inch
(1.15–1.25mm)
Compression
ratio
9.7:1
10.3:1
Engine drivebelt routing
•
2.5L I4 Engine
•
3.0L V6 Engine
2009 Mariner
(mrn)
Owners Guide, 1st Printing
USA
(fus)
Maintenance and Specifications
306