Riffraff Diesel Technical Knowledge Center
Diesel Fuel Gelling and Waxing: Symptoms, Prevention, and How to Fix It
Oct 9th 2026
Most diesel owners know the risk dropping winter temperatures imposes on diesel fuel. As diesel gets cold, naturally occurring paraffin wax begins coming out of solution. Those wax crystals can
… read more
1999-2003 7.3L Powerstroke Fuel Bowl Leaks: Diagnosis and Repair
Oct 7th 2026
Cold weather tends to make diesel fuel leaks appear more often. Fuel is more dense in the cold, and the seals don't like cold either. Now diesel fuel in the valley, or down lower on the engine of a 19
… read more
6.0L Powerstroke Lifter and Camshaft Damage: Symptoms, Diagnosis, and Repair
Sep 25th 2026
Lifter failure is one of the 6.0L Powerstroke problems we'd rather catch early, before it completely destroys the engine.
The 6.0 uses hydraulic roller lifters between the camshaft and pushrods. Norma
… read more
Riffraff Diesel HPOP Bolt Access Cover for 1994-2003 7.3 Powerstroke
Sep 24th 2026
The 7.3 Powerstroke HPOP drive gear bolt access cover is not the most fun to deal with when the HPOP has to come out. The factory cover is a thin sheet metal plate sealed with RTV. Every time it is re
… read more
6.0L Fuel Filter Set for 2003-2007 Powerstroke
Sep 22nd 2026
The 6.0L Powerstroke fuel system uses two filters: a primary filter in the frame-mounted HFCM and a secondary filter on top of the engine. It's good practice to service them together.
Riffraff D
… read more






