Important Facts About The Ford Edge 3.5 V6 Cylinder Numbering

Some people are curious about the Ford Edge 3.5 V6 cylinder numbering. 

Now, this is something that concerns a few people when it comes to understanding more about how their engines work. Basically, the firing order of your internal combustion engine relates to your ignition sequence for your cylinders.

When it comes to a spark ignition type of engine, the order depends on the specific order where your spark plugs operate. So, in the case of a diesel engine, your firing order typically corresponds to an order in which your fuel is injected right into the cylinder. This is why with four-stroke engines, it is important to time appropriately valve openings related to their firing order. This is because valves do not close and open in every stroke.

We will explain this topic further in the next section, so keep reading to learn more.

ford edge 3.5 v6 cylinder numbering

Ford Edge 3.5 V6 Cylinder Numbering

The firing order generally impacts vibration, as well as the evenness and sound of the power output from your engine. This also impacts your crankshaft design.

When it comes to the Ford Edge, 3.5L V6 cylinder numbering, when you stand in front of your car with the hood up and you are looking towards the rear of the vehicle, the numbering is as follows: 1-2-3-4-5-6.

Hence, 1 and 4 are located on the passenger’s side while the driver’s side has 3 and 6. If you heard a misfire on your number 2 cylinder, it would be located at the back, which means it can be harder to access unlike the ones in the front. 

Some people complain about having a misfire on their number 6 cylinder, and that is after installing a replacement motor craft spark plug. But upon installing a coil pack, there appears to be no change at all. So, they placed the spark plug from the number 6 position to number 5, which resulted in a cylinder misfire. This means that it was simply a case of a bad spark plug.

After replacing the spark plug, this solved the issue. However, it is worth noting that you need to replace all your spark plugs. At about 102,000 miles, others had a misfire issue on cylinder number 6, which caused the coil pack to crack and even backfed into their PCM. Thus, if you only choose to change the pack and the plug affected, you may eventually have a misfire in the other cylinders. So, it is best to change all of your spark plugs to prevent further damage. This is why changing all the spark plugs is absolutely crucial when you have a misfire issue. 

As for the components of the Ford Edge 3.5 V6, there are dual overhead camshafts, a sequential multi-port fuel injection or SFI, 4 valves for each cylinder, cylinder heads made of aluminum, lower intake manifold made of aluminum as well as a composite material for the upper intake manifold, and a 60-degree V-cylinder block made of aluminum.

Other components include a timing chain-driven coolant pump and a VCT system or a variable camshaft timing system. There are also 6 ignition coils to the electric ignition system.

Now, as for the 2009 Ford Edge, this needs a Premium synthetic blend type of motor oil (SAE 5W-20) or a fully synthetic one that meets the Ford specifications (WSS-M2C930-A).

The recommended fill capacity is 5.5 quarts with every filter change. On the other hand, when filling without a trailer towing package, it is at 11.7 quarts while for the one with a towing package, it is at 13.83 quarts.

All About Cylinder Numbering

Your vehicle’s number system for the cylinders is based on your cylinder numbers that increase from the front portion to the rear of your engine. There are a few differences on this numbering depending on the manufacturer and the engine type.

For straight engines the numbering for cylinders is from the front, which is the number 1 cylinder, then to the rear.

As for the V engine, such as the V8, it would depend on the crankshaft’s position. It does not follow each of the cylinder banks. Now, the frontmost cylinder, it is usually the number 1, yet there are also a few other approaches that are applied.

The number in each bank can be sequential, which is from 1 through 4 for the left bank and then 5 through 8 for the right bank. This is usually the approach for Ford, Porsche, and Audi V8 engines.

But in the case of other V8 engines such as by Chrysler and General Motors, the numbering depends on the position along its crankshaft. So, that would be 1-3-5-7 for the right and 2-4-6-8 for the left. 

Basically, the selection of the number 1 cylinder being on the right or left bank depends on the location of the bank that is in close proximity to the crankshaft’s front portion. But with the Pontiac V8 and the Ford Flathead V8, these engines typically have their number 1 cylinder located on the right bank while for the Pontiac, it is on the left bank. 

With radial engines, however, the cylinders are usually numbered along the circle. It starts with the number 1 located at the top and then going clockwise.

To reduce vibrations, many engines utilize a firing interval that is spaced evenly. What this means is that the power stroke’s timing has an even space between the cylinders. Thus, four-stroke engines need a firing interval of about 720 degrees and divided by how many cylinders there are. Thus, a 6-cylinder engine comes with a firing interval of 20 degrees. But with a 6-cylinder engine that comes with an uneven type of firing interval, it can be at 90 degrees and 150 degrees.

For engines that come with an even type of firing interval, the sound is generally smoother. There will also be minimal vibration, which makes the pressure pulses even in the exhaust gas up to the turbocharger. This explains why uneven firing intervals with some engines tend to produce a more throaty sound resembling a growling noise, in addition to more vibrations.


The Ford Edge 3.5L V6 cylinder numbering is fairly simple to understand, which makes it less confusing for owners. It is best to understand the right numbering and to keep your engines well-maintained to avoid any issue that can cause serious damage to your vehicle.

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