2003 Ford Expedition 5.4 L Firing Order – It’s essential to know which financial institution (or cylinder Top) is # 1 to assist figure out a place to start for firing order or perhaps to exchange the appropriate portion, such as an Oxygen sensing unit, gasoline injector or ignition coil.
In past times all of that was needed to find out which bank or cylinder mind is number one was to determine what cylinder brain is positioned the farthest frontward. The one which is regarded as the forwards (closest to the front side of your engine) is the top cylinder and therefore aspect is financial institution a single.
But a majority of motors nowadays have cylinder heads that are placed uniformly, rendering it harder to find out which is banking institution number 1 and which is financial institution # 2. A couple of common good reasons we have to know this, for instance is to figure out Oxygen sensor to switch when you are interested in B1 S1 (Bank 1 Sensing unit One particular), or if perhaps you’re looking to find an ignition coil to examine for a P0301 (#1 cylinder misfire saved) misfire code.
What you should try out