Mercury 2009 Grand Marquis - Engine Data; Engine Drivebelt Routing

ENGINE DATA
Engine 4.6L V8 engine 4.6L FFV V8 engine
Cubic inches 281 281
Required fuel 87 octane 87 octane or Ethanol
(E85)
Firing order 1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8
Ignition system Coil on plug Coil on plug
Spark plug gap 0.052–0.056 inch
(1.32–1.42 mm)
0.041–0.047 inch
(1.04–1.20 mm)
Compression ratio 9.4:1 9.4:1
Engine drivebelt routing
2009 Grand Marquis (grn)
Owners Guide (own2002), 2nd Printing
USA (fus)
Maintenance and Specifications
260