Riffraff Diesel Technical Knowledge Center
Consistent Oil Supply: Why the HPX makes a big difference in 7.3 operation and longevity
Posted by Adam Blattenberg on Jun 18th 2025
The 7.3L Powerstroke engine uses a HEUI (Hydraulically Actuated Electronically Controlled Unit Injector) fuel injection system. This means that the fuel injectors are actually fired by highly pressuri
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The Deadhead System - What it is and how to fix it - 6.0L and 7.3L Powerstrokes
Posted by Adam Blattenberg on Apr 9th 2025
For 7.3’s and 6.0’s alike, the fuel system could benefit from an upgrade. One that removes the deadhead issue that plagues each engine. The fix will increase injector life, increase throt
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Stop The Drip!!! – 7.3L Dipstick Adapter Repair Kits
Posted by Adam Blattenberg on Apr 2nd 2025
One of the most common repairs made to the venerable 7.3L Powerstroke, is the dipstick tube adapter. Simply put, it leaks. The adapter form Ford/International is a three-piece part consisting of the d
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Blown Boots And Collapsed Factory Stamped Steel Plenums - How And Why It Happens, And How To Prevent It.
Posted by Adam Blattenberg on Mar 22nd 2025
Blown boots are some of the most common concerns in all of diesel. Just about everyone has delt with one, and when it happens, it’s always during a high stress situation. You’re towing hea
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The 7.3L Timing Cover: The Good, The Bad, The Ugly, and The Billet Replacement
Posted by Adam Blattenberg on Feb 11th 2025
Arguably one of the most complex parts on a 7.3. Just about everything runs through the front timing cover or heavily relies on it doing its job correctly. The OE front cover has done its job amazingl
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