4.9 Ford Engine Firing Order – It’s vital that you know which banking institution (or cylinder Top) is # 1 to help you determine a place to start for firing order or simply to exchange the correct component, like an Oxygen sensor, fuel injector or ignition coil.
In the past all that was needed to determine which banking institution or cylinder go is number 1 was to find out which cylinder go is situated the farthest ahead. One which is easily the most frontward (nearest the front side of the engine) is the top cylinder and therefore area is lender one particular.
However, many engines right now have cylinder heads which can be located consistently, making it more difficult to determine which is banking institution number 1 and which can be financial institution number 2. Several popular factors we must know this, for example would be to establish Oxygen sensor to replace when you are searching for B1 S1 (Financial institution A single Sensing unit 1), or maybe if you’re attempting to find an ignition coil to inspect to get a P0301 (#1 cylinder misfire saved) misfire code.
Points to try out
Four cylinder motors generally have the #1 cylinder nearest to the front of the engine (merely one financial institution).
V-6 or V-8 search for the plug that is nearest to the leading in the engine, when the cylinder heads are even an alternate strategy for figuring out #1 is going to be needed.
Don’t disregard the obvious, check on the spark plug wire on its own for cylinder figures.
Also look into the ignition coil for phone numbers.
When you have a scan tool, try out disconnecting an oxygen detector in the short term to determine which is B1 or B2. Commonly a pending code or hard code sets quickly. Also glance at the info monitor of your check out resource, the voltage need to in many instances normal to .5V.
If all else falls flat read the services handbook. Several online options supply quick access to firing order and a lot more at DIY pricing.