2007 Ford Expedition Firing Order – It’s vital that you know which bank (or cylinder head) is # 1 to help you decide a starting place for firing order or perhaps to change the correct part, as an Oxygen sensing unit, gas injector or ignition coil.
Before all of that was required to find out which bank or cylinder head is primary was to see which cylinder mind is placed the farthest forward. The one which is easily the most forward (nearest to the leading of the engine) is the number one cylinder and that side is banking institution one particular.
But a majority of engines these days have cylinder heads which can be placed uniformly, that makes it tougher to determine which is lender # 1 and that is banking institution number 2. A few frequent reasons we need to know this, as an example is to establish Oxygen sensor to exchange when you are looking for B1 S1 (Financial institution 1 Detector 1), or if perhaps you’re trying to locate an ignition coil to inspect to get a P0301 (#1 cylinder misfire saved) misfire code.
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