2004 Ford F150 4.2 Firing Order – It’s vital that you know which financial institution (or cylinder Top) is primary to help you establish a starting place for firing order or simply to switch the proper part, such as an Oxygen sensing unit, fuel injector or ignition coil.
Before all that was necessary to determine which bank or cylinder head is # 1 was to find out which cylinder go is situated the farthest forward. The one that is considered the most forward (closest to the front of the engine) is the number one cylinder which area is banking institution 1.
However, many engines nowadays have cylinder heads which can be positioned equally, rendering it more difficult to determine which is bank number 1 and that is bank second. A few common good reasons we need to know this, as an illustration would be to determine Oxygen detector to change when you would like B1 S1 (Financial institution One Indicator 1), or if perhaps you’re seeking to find an ignition coil to examine for the P0301 (#1 cylinder misfire saved) misfire code.
Things to consider