7.3 Powerstroke Firing Order [With Diagram]

The 7.3 Powerstroke was an incredibly popular engine back in the day. It was favored by many people because of its raw power and great fuel economy. The Powerstroke was designed to be much more powerful and better overall than any of its predecessors and it certainly is so. The Powerstroke is more powerful than the 6.9 as well as the 7.3 IDI. The 7.3 cylinder numbers were 8 in total.

The 7.3 IDI firing order was 1-2-7-3-4-5-6-8. The 1997 and the 2000 powerstroke firing orders are also the same. There wasn’t much to complain about the 7.3 Powerstroke except the number 8 injector problem which would often lead to an injector replacement.

Firing order of 7.3 Powerstroke

The Firing Order for 7.3 Powerstroke is 1-2-7-3-4-5-6-8

The explanation of 7.3 Powerstroke Firing order

By looking at the 7.3 idi firing order from the Ford 7.3 cylinder layout, you can see that the firing order of the power stroke is 1-2-7-3-4-5-6-8. What this means is that each cylinder of the power stroke is given a specific number from 1 to 8. The numbers of the firing order represent a specific cylinder and the order in which they appear tells us the sequence in which the cylinder will be ignited. Understanding the firing order of a vehicle is important when you buy it.

The firing order applies to

  • Ford 6.9
  • Chevrolet 6.2 liter
  • GMC trucks

Torque specifications

/16 in. Outer Main Cap Bolt65 ft.-lbs.
7/16 in. Inner Main Cap Bolt75 ft.-lbs.
3/8 in. Outer Main Cap Bolt35 ft.-lbs.
11/32 in. Connecting Rod Bolt38-44 ft.-lbs.
3/8 in. Connecting Rod Bolt40-45 ft,-lbs.
/16 in. Outer Main Cap Bolt65 ft.-lbs.
/16 in. Outer Main Cap Bolt65 ft.-lbs.
7/16 in. Inner Main Cap Bolt75 ft.-lbs.
3/8 in. Outer Main Cap Bolt35 ft.-lbs.

Why is the 7.3 Powerstroke number 8 injector different?

The number 8 injector was replaced by Ford was replaced in some vehicles because the number 8 injector caused a filling problem which resulted in a misfire. This happened because the number 8 injector was the farthest away from the oil pump than any other injector. The Powerstroke injector replacement was issued just for this reason.

What causes a 7.3 to run rough?

If your 7.3 powerstroke is running rough, it may be due to idling and misfiring. This problem exists for a variety of reasons. However, this problem can appear in the form of a worn-out injector or a bad sensor, etc. To understand the full extent of your problem, you should look at the experiences of other people or take your vehicle for inspection.

Check Out LS1 Firing Order

What’s the difference between a 7.3 IDI and a 7.3 Powerstroke?

The 7.3 IDI and 7.3 Powerstroke are two different engines and are not the same. While the two have some similarities, they also differ. The main difference between the two is that the 7.3 IDI is mechanical whereas the 7.3 PS is controlled by a computer.

What does IDI mean on a 7.3 Diesel?

IDI stands for InDirect Injection. The 7.3 IDI is a four-stroke v8 diesel engine that was used in International Harvester vehicles from the years 1983 to 1994. The 7.3 IDI has been replaced by a better option which is the 7.3 Powerstroke which is controlled digitally by a computer.

Jake Mayock