On a 2010 Mercury Grand Marquis , 4.6 liter V8 engine :
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front of vehicle
According to the 1998 Mercury Grand Marquis Owner Guide it has the Coil On Plug ( C.O.P. ) ignition system so there are ( 8 ) individual coils firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Grand Marquis
On a 1998 Mercury Grand Marquis : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
On a 2000 Mercury Grand Marquis : The firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 ) The engine cylinder locations are numbered : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Mercury Grand Marquis , 4.6 It has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils
On a 1999 Mercury Grand Marquis : It has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils One coil for each of the eight spark plugs firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Mercury Grand Marquis ( V8 )
For the 4.6 liter V8 engine in a 2004 Mercury Grand Marquis : The firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 ) It has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils The engine cylinder locations are numbered : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Mercury Grand Marquis
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Mercury Grand Marquis
For a 1999 Mercury Grand Marquis : The firing order is ( 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 ) It has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils The engine cylinder locations are numbered : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Mercury Grand Marquis
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Mercury Grand Marquis