cyl#4 1s on right side last cyl right side front to bak 1 2 3 4 left side front to back 5 6 7 8 hope this helps
First cylinder on the passenger side.
An engine cylinder misfire has been detected on the # 1 cylinder and the # 8 cylinder firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
I had the same problem with a 1999 Expedition and it was a bad plug. Ford had a problem also with the plugs blowing out. It cost me about 1200.00
On a Ford Expedition ( 4.6 and 5.4 liter V8 engines ) firewall 4 -8 3 - 7 2 - 6 1 - 5 front of vehicle
The # 2 engine cylinder is misfiring firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
the number 5 cylinder on a 1998 Ford Expedition 4.6 liter v8 is the first one you see on the drivers side front.
FIREWALL 4 - 8 3 - 7 2 - 6 1 - 5 FRONT
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
On a Ford Expedition 5.4 ( and 4.6 ) firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
Cylinder # 1 is the front cylinder on the passenger side and Cylinder # 4 is the back cylinder ( by firewall ) on the passenger side firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
On a 1998 Ford Expedition ( 5.4 and 4.6 ) firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle