compression ratio Mercury Mariner 2009 Owner's Manuals
Page 302 of 312
ENGINE DATA
Engine 2.5L I4 engine3.0L 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 gap0.049–0.053 inch
(1.25–1.35mm)0.045–0.049 inch
(1.15–1.25mm)
Compression
ratio9.7:1 10.3:1
Engine drivebelt routing
•2.5L I4 Engine
•3.0L V6 Engine
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Maintenance and Specifications
302