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Ford 7.3 Gas Problems You Can Solve 

  • Car Care Tips
  • Celine Jerly
  • 5 minutes

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Looking for common Ford 7.3 gas problems? But there’s almost none that you can’t fix quickly. However, the 2020-model work engine hasn’t had much time to prove its reliability. So, here’s all you need to know about the new monster from Ford.  

Ford launched its 7.3L gas V8 engine in the model year 2020 as a high-displacement work engine with low RPM and great upgrade potential. The 7.3L gas V8’s immense power has also earned it the name Godzilla. Commonly cited Ford 7.3 gas problems barely affect its performance.  

Designed for high output with reliable tow and heavy load capacity, the naturally-aspirated 7.3 Godzilla engine fills the gap between Ford’s 6.2L Boss and 6.7L Power Stroke. It also replaces the Ford 6.8 Triton V10 engine. The non-hybrid, EcoBoost engine has been a major development from the Ford Motor Company. At present, the 7.3L is the manufacturer’s largest displacement gas engine.  

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What is the typical pairing for the 7.3? 

The Ford 7.3 gas engine is typically paired with a 10-speed automatic transmission. It is different from the 10R80 in F-150.  

You’ll find the 7.3L gas in Ford’s work fleet trucks and super duty lines or with the Econoline chassis setup. It is a stock engine for F-450 and F-650 and is also available as an option for Super Duty Tremors. Early uses detected much of the Ford 7.3 gas problems with these models. F-250 and F-350 can get it as an upgrade from the 6.2 Boss engine for just about $2000.  

Ford medium duty F-650 truck with 7.3L gas engine

What are the Ford Godzilla engine’s best features? 

To understand the common Ford 7.3 gas problems better, you must know what makes the engine worth the hype.  

The old-school 920-pound cast iron big block engine can handle higher amounts of strain, making it ideal for towing and heavy loads. It also produces more power and torque – 430 hp @ 5500 RPM and 475 lb-ft @ 4000 RPM – than other options.  

The Godzilla is naturally aspirated; there’s no turbocharger or supercharger. The Pistons have cooling jets and additional setups to lower engine temperature when under pressure. Other features that make up the beast are an OHV (overhead valve) pushrod V8 design, high-pressure port fuel injection, a forged steel crankshaft, variable valve timing, a displacement oil pump, etc. 

With a tow rating of 45K pounds, the Ford 7.3L is a great choice for a high-performance engine in gasoline-powered trucks, vans, or buses.  

What are the common Ford 7.3 gas problems? 

Since its launch in 2020, the 7.3L hasn’t received any major complaints. However, early owners had minor criticisms, especially regarding misfires due to a spark plug problem. A faulty wiring harness caused it, which Ford acknowledged as a manufacturing defect on the supplier’s part and corrected. Most vehicles with the 7.3L gas engine are still under warranty, and the dealership can fix it. Even if it is out of warranty, the sub-part replacement will cost you only about $30.  

Early owners also reported isolated incidents such as cylinder scoring and stuck lifters. However, catastrophic failures are rare with the Ford 7.3L. Another concern that could be considered a Ford 7.3 gas problem is mileage. City and Highway driving get about 12 MPG, and if you are towing, it goes further down to 8-9 MPG. But as most truck owners point out, you do not get the 73L Godzilla engine to reduce emissions or save gas. Experience drivers suggest switching to Eco Mode, driving with a light foot, and keeping an eye on the tire pressure for better mileage.

Also See: What Is the Cost To Fix an Engine Misfire?


Is the Ford 7.3 gas engine reliable? 

It’s too soon to determine the Ford 7.3L’s longevity as the engine’s been in the market for only a couple of years. But if we refer to the Boss engine that the Godzilla replaced, expect to make it over the 300K-mile mark.  

Ford 7.3L combustion engine is a simple pushrod V8 with a single camshaft. Even though the setup is fairly dated by current standards, it’s proven to be highly reliable and durable. The Godzilla also outpaces its competition – an F-250 with a 7.3L block engine makes significantly more power and torque than the Chevrolet Silverado HD and Ram 2500.  

How many miles will a 7.3 Godzilla last? 

With its limited time in the consumer market, the 7.3L gas engine from Ford is too young to have long-term data on reliability. Many units are still under warranty; however, common estimates place the Godzilla in the 200K-300K miles range – the same as the Ford Boss.  

You can improve the engine’s performance with regular maintenance and care. Prioritize coolant flushes (at 150K miles), fuel filter replacements (at 15K miles), oil changes (at 10K miles), and transmission fuel/filter replacements (at 45K miles). Take extra care when frequently driving under heavy-duty conditions.  

Also See: Why and How You Should Change Your Engine Oil

Even with the best care you can give your vehicle, unexpected problems are always a risk. While we wait and watch how reliable the Ford 7.3L Godzilla engine is, get the best quotes for auto insurance from Way.com. 

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