Most likely a bad coil (each cylinder has one) located at the top of each spark plug
drivers side cylinder head under the intake manifold....
In a 2008 Ford Expedition : The 5.4 liter V8 engine has ( 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS )
For a Ford Expedition , 5.4 ( and 4.6 ) Passenger side firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
My #1 cylinder is miss firing, I'm thinking coil or plug? I don't know much about this car.
The oil pan is bolted to the bottom of the engine
According to the 2005 Ford Expedition Owner Guide the 5.4 liter V8 takes : ( 7 quarts ) with engine oil filter change
yes - 8 spark plugs for a gas V8 engine
For a 2000 Ford Expedition : The 4.6 liter V8 engine uses the ( 4R70W ) The 5.4 liter V8 engine uses the ( 4R100 )
On a Ford Expedition : Bank 1 is the passenger side of the V8 engines
try a 18mm socket
The thread on cap on your engine coolant reservoir is the " radiator cap "
On your 1999 Ford Expedition : The thread on cap on your engine coolant reservoir ( located at the front of the engine compartment , on the drivers side ) is the pressure cap / radiator cap