97 Ford Expedition 5.4 Firing Order – It’s vital that you know which banking institution (or cylinder head) is number 1 to help you decide a beginning point for firing order or maybe to replace the right portion, such as an Oxygen sensing unit, fuel injector or ignition coil.
In the past all of that was required to find out which lender or cylinder mind is primary was to determine which cylinder go is situated the farthest forward. One that is the most forward (closest to the top from the engine) is the best cylinder and this aspect is lender one particular.
But some engines right now have cylinder heads which are located evenly, which makes it harder to find out which is bank # 1 and which happens to be financial institution number two. A number of frequent good reasons we need to know this, for instance would be to decide Oxygen sensor to replace when you are interested in B1 S1 (Financial institution One particular Sensing unit One particular), or maybe if you’re trying to identify an ignition coil to examine for a P0301 (#1 cylinder misfire captured) misfire code.
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