Dead pedal, hot no-start, surging at cruise - the VP44 gets blamed for all of it, and often wrongly. How the pump really fails, the two cheap parts that mimic it perfectly, and how to keep the replacement alive.

The 1998.5-2002 24-valve Cummins is one of the best engines Dodge ever put in a pickup, wrapped around one of the most cursed fuel system decisions of the era. The Bosch VP44 injection pump is expensive, it's failure-prone, and it takes out an enormous number of otherwise healthy trucks. Worse,...

By Derek Rose Read more
That tick on cold start that disappears when the truck warms up is a cracked manifold until proven otherwise. Why Cummins manifolds crack, how to catch it early, repair vs replace, and how to keep the next one alive.

It usually starts as a tick. Cold morning, first start of the day, and there's a light metallic ticking from the passenger side that fades away once the truck warms up. Most guys write it off as an injector or a lifter and forget about it. Six months later the...

By Derek Rose Read more
Handheld, cloud-based, or module? A straight comparison of Smarty, EZ Lynk, Edge and H&S across every Cummins platform - plus the emissions rules that actually apply and the supporting mods you need first.

Ask five Cummins owners which tuner to buy and you'll get five answers, three arguments, and at least one guy insisting the thing he bought in 2011 is still the only option worth owning. The tuner market has changed more in the last decade than any other corner of the...

By Derek Rose Read more
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