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 ...

Many '98 1/2 to '02 Dodge owners get fed up with their unreliable electronic VP44 injection pumps or simply want more power than the VP44 can produce. Recently, we ran across an extreme example-an '01 ...

No diesel engine on earth is as legendary as a 12-valve Cummins. Not only is the inline-six known for its awesome stock torque figures, but the 1,100 pound iron hulk from Columbus, Indiana has 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 ...

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 ...