2003 Ford Expedition 4.6 Firing Order – It’s crucial that you know which lender (or cylinder head) is primary to help you determine a beginning point for firing order or just to change the appropriate aspect, just like an Oxygen detector, gas injector or ignition coil.
In past times all that was needed to find out which banking institution or cylinder head is # 1 was to see which cylinder head is located the farthest ahead. One that is considered the most forward (closest to the top in the engine) is the top cylinder and this aspect is bank one.
But a majority of motors right now have cylinder heads that happen to be placed evenly, making it more difficult to find out which is lender number 1 and that is bank second. A couple of common good reasons we need to know this, as an illustration is to figure out Oxygen indicator to replace when you are looking for B1 S1 (Banking institution 1 Detector A single), or if perhaps you’re attempting to track down an ignition coil to examine to get a P0301 (#1 cylinder misfire recorded) misfire code.
What you should try