There’s no EGR and sometimes, on the early models, not even a catalytic converter. A truly mind blowing feature of the 7.3L is the lack of emission control devices. When compared with its contemporaries, the power, durability and ease of repair make it the superior engine. This means the 7.3L is much less likely to burn up drivetrain components, turbochargers or other engine components. Considering these engines are capable of reaching high mileage without breaking a sweat, we will undoubtedly continue to see them in our shops for many years to come.Įngine performance on these beasts of burden is somewhat tame when compared to its modern replacements but that’s not necessarily a bad thing. Whatever the reason, with about 2 million units sold, this is a very familiar engine to technicians wherever trucks are repaired. Some have suggested it was replaced for emissions standard changes, and some say it was because of the noise level. The 7.3L Power Stroke ® made its appearance in Ford trucks starting in 1994 and kept them running strong until 2003 when it was replaced by the 6.0L Power Stroke ®. This clout was maintained with a diesel engine option available in trucks and vans rated 3/4 ton and up. Let’s take a look at some of the more common service issues and some easy ways to diagnose and fix them.įord has always had a reputation for having a strong and reliable line of trucks. For others, it’s a super-reliable powerplant that seldom needs more than routine maintenance. For some, it’s an experience of fluids mixing, fuel leaks and no-starts. The Power Stroke ® 7.3L was the go-to diesel engine in Ford trucks and vans from the mid-’90s to 2003. Keeping the 7.3L Power Stroke ® Diesel engine going strong. To make more torque, all one would need to do is build a bigger engine. An excellent engine design would offer a volumetric efficiency beginning at very low engine speeds, up to near redline. Some modern, naturally aspirated engines can come close to 100 percent efficient, but it’s rare. This RPM would also correlate with the point at which the engine produces the maximum amount of torque. If that engine were able to achieve 100 percent VE it would be able to move two liters of air in and out of the engine while at a certain RPM. For example, say you have a two-liter engine. For review, volumetric efficiency (VE) is the measurement of the engine’s ability to pump its displacement. The overall goal is to make the engine as volumetric efficient as possible across a wide operating engine RPM range. Examples are variable length intake runners, variable camshaft timing, cylinder head design and so on. Many of these advanced features have been appearing over the years. Naturally aspirated engines found in today’s vehicles can be classified as highly volumetric efficient due to advancements in engine design and engine controls.
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