the cylinder or spark plug that sits farthest foword.gmjim
4 banger is 1234 number 1 is closes to front of truck
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Bronco ( V8 )
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
I was told the number 1 piston is at the back side of the motor closet to the passenger side.
Front Plug on passenger side.
make sure the #1 piston is at the top at the caps clip start clockwise 1-4-2-5-3-6
On a Ford Expedition , 4.6 and 5.4 : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
There is the FULL SIZE BRONCO and then the Bronco II ( the Bronco II is smaller , eventually replaced by the Ford Explorer)
firewall 3 - 6 2 - 5 1 - 4 front
Ford V8 engine : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front