Ford 7.3L Gas v8 Engine Problems, MPG, Oil Capacity/Type

The Ford 7.3 gas v8 engine is new for 2020.

There have been a few problems like:

  • spark plug wires misfires
  • stuck lifters
  • knocking and power loss
  • poor mileage

Troubleshooting tips:

  1. Engine Misfire – If your engine is misfiring, you may notice a rough idle or a loss of power. This can be caused by a variety of issues, such as faulty spark plugs or ignition coils. Try replacing the spark plugs and coils to see if that resolves the issue.
  2. Rough Shifting – If you’re experiencing rough shifting or slipping transmission, it could be due to a malfunctioning torque converter. Try changing the transmission fluid and filter, and if that doesn’t work, consider replacing the torque converter.
  3. Stalling – If your engine is stalling or shutting off, it could be due to a faulty fuel pump or clogged fuel filter. Try replacing the fuel filter and checking the fuel pressure to see if that solves the issue.
  4. Overheating – If your engine is overheating, it could be due to a malfunctioning thermostat, water pump, or radiator. Check the thermostat and water pump for proper function and consider replacing the radiator if it’s clogged or damaged.
  5. Poor Fuel Economy – If your fuel economy has decreased significantly, it could be due to a variety of issues, such as a clogged air filter, worn spark plugs, or a faulty oxygen sensor. Try replacing the air filter and spark plugs and consider replacing the oxygen sensor if it’s not working properly.


The engine gets 8 mpg city and 12 mpg hwy.


It uses 8 quarts of 5w-30 oil

tools needed for drain plug: 15mm wrench

Ford recommends changing the oil every 10k miles.

The engine aka Godzilla is used in Ford f250 – f750. It replaced the 6.8 Triton v10.


size 7.3L, 444.9 cu. in.
cylinder bore and stroke 4.22in, 3.976in
Cast iron block
Aluminum heads
10.5:1 compression
430hp @ 5,500rpm
475lb-ft. @ 4,000rpm

Engine picture:

Video clip discussing good, bad, and mpg

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