1997 Ford Expedition 5.4 Firing Order – It’s crucial that you know which financial institution (or cylinder Top) is number 1 to help establish a beginning point for firing order or maybe to change the proper part, like an Oxygen sensing unit, energy injector or ignition coil.
Before everything that was needed to determine which lender or cylinder brain is primary was to determine what cylinder mind is placed the farthest forward. The one that is considered the most ahead (nearest to the front side from the engine) is the number one cylinder and that part is lender one.
But many engines these days have cylinder heads that happen to be located consistently, which makes it more difficult to find out which is lender # 1 and which is bank number two. A couple of popular good reasons we need to know this, for instance is to figure out Oxygen detector to switch when you would like B1 S1 (Lender One Sensing unit One), or if you’re trying to locate an ignition coil to examine for a P0301 (#1 cylinder misfire saved) misfire code.
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