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ENGINE DATA

Engine 4.0L SOHC V6

engine

4.6L 3V V8

engine

Cubic inches 245 281

Required fuel 87 octane 87 octane

Firing order 1-4-2-5-3-6 1-3-7-2-6-5-4-8

Ignition system EDIS Coil on Plug

Spark plug gap 0.052–0.056 inch

(1.32–1.42 mm)

0.039–0.043 inch

(1.0–1.1mm)

Compression ratio 9.7:1 9.8:1

Engine drivebelt routing

• 4.0L V6 Engine

• 4.6L V8 Engine

2009 Mountaineer (mnt)

Owners Guide, 2nd Printing

USA (fus)

Maintenance and Specifications

377

Mercury 2009 Mountaineer User Manual

Questions and Answers: