Columbus told us that the Sigmas use oversized injector lines and 16mm plungers instead of the 12mm versions you'd normally find in a Bosch P7100. As engine rpm increases, the window of time you must ...

In March of 1978, the International Harvester Corporation started development of an engine that would eventually change the way pickup trucks and light-duty vehicles would be powered. The 420ci (6.9L) ...

When the fifth-generation Ram HD pickup debuted for the 2019 model year, it brought with it a raft of updates, including a revamped Cummins 6.7-liter inline-six diesel engine offering the Ram a ...

The second generation of 5.9L Cummins engine from 1994 to 1998 is one of the most desirable diesel engines – largely used in Dodge Rams — due to their power and durability. This is in part due to the ...

How GM and Isuzu's 60:40 joint venture produced the 6.6L Duramax LB7, lifting GM's diesel market share from 3% to over 30%.

When it comes to gas-guzzling engines, the American automotive industry is known for building some of the best V8s of all time. However, US manufacturers have also developed some legendary diesels, ...

Diesel engines lack the spark of gas engines, both literally and figuratively. They don't need a spark plug since they ignite the fuel using only compression, but also lack the 'je ne sais quoi' that ...