2003 Ford Focus Firing Order – It’s crucial that you know which financial institution (or cylinder Top) is number 1 to aid determine a place to start for firing order or simply to exchange the proper aspect, like an Oxygen sensing unit, gasoline injector or ignition coil.
In past times all of that was necessary to determine which lender or cylinder brain is primary was to see which cylinder brain is positioned the farthest forward. One which is easily the most forward (nearest to the leading in the engine) is the top cylinder and therefore side is financial institution one particular.
But many engines right now have cylinder heads which can be positioned evenly, rendering it tougher to find out which is lender primary and which happens to be bank # 2. Several typical good reasons we should know this, for example is always to determine Oxygen sensor to replace when you would like B1 S1 (Bank A single Detector One), or if perhaps you’re seeking to locate an ignition coil to inspect for a P0301 (#1 cylinder misfire documented) misfire code.
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