2003 Ford Expedition 5.4 Firing Order – It’s crucial that you know which bank (or cylinder head) is # 1 to aid establish a place to start for firing order or just to change the right component, as an Oxygen sensor, fuel injector or ignition coil.
Before everything was required to determine which banking institution or cylinder head is number one was to find out which cylinder head is positioned the farthest forwards. One which is easily the most frontward (nearest the front side of the engine) is the main cylinder and this side is lender one particular.
However, many engines right now have cylinder heads which are placed uniformly, which makes it tougher to determine which is lender # 1 and which can be banking institution number two. A number of common factors we must know this, for example would be to establish Oxygen sensor to replace when you are interested in B1 S1 (Financial institution One Sensor One), or maybe you’re looking to find an ignition coil to examine for the P0301 (#1 cylinder misfire captured) misfire code.
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