Riffraff Diesel Inc

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Fuel Pressure Regulator “Blue Spring” Kit for 6.0L Powerstroke (2003–2007)

The Fuel Pressure Regulator “Blue Spring” Kit (AP0086) fixes a boring problem that becomes an expensive one: low fuel pressure on a 6.0L. This updated spring restores fuel pressure back toward where i

New Product: JIC FPR Billet Housing w/ Pressure Shim Springs for 1999–2003 7.3 Powerstroke

The stock 7.3 fuel bowl FPR housing works… until it doesn’t. The cast threads can bind, strip, or flat-out snap if there’s contamination in the threads or the compression fitting gets over-tightened.

7.3 Powerstroke Low Pressure Oil Pump Installation: Melling LPOP

Full PDF Instructions can be found here: https://www.riffraffdiesel.com/content/RESOURCES/Riffraff_Diesel_LPOP_Instructions.pdf Required Parts: M208 Melling LPOP: https://www.riffraffdiesel.com/mell

Ford Recall List: 6.0L Powerstroke

Just like our 7.3 recall list, on this 6.0L recall list, we’ll concentrate on drivetrain related recalls and include links to documents where we can find them. Some recalls listed on the NHTSA site ha

Why the Blue Spring Upgrade Matters on a 6.0L Powerstroke

The blue spring upgrade exists because the 6.0L Powerstroke has a fuel pressure problem that usually starts small, stays hidden, and eventually gets expensive. From the factory, the regulator in the f

Full Step By Step How To: 7.3L Diesel Fuel Rail Crossover™ (FRx) 99-03 Ford Powerstroke

Full PDF Instructions can be downloaded here: https://www.riffraffdiesel.com/mm5/RESOURCES/Riffraff_Diesel_FRx_Instructions.pdf Product Link: https://www.riffraffdiesel.com/fuel-rail-crossover-frx/ IM

6.0L Powerstroke Cooling System Pressure Problems: Cap, Leaks, Overheating, or Head Gaskets?

The 6.0 does have a head gasket sealing issue, but that doesn't automatically mean every symptom that looks like a head gasket failure, is actually a head gasket failure. Plus, by now, 20+ years after

Exhaust Back Pressure Tube Issues for the 1999–2003 7.3 Powerstroke

The 7.3 Powerstroke exhaust back pressure tube connects the passenger-side exhaust manifold to the EBP sensor mounted near the front of the HPOP reservoir. That tube lets the sensor read exhaust press

Eliminate 6.4L Boost Leaks For Good: Complete CAC Intercooler Boot Kit

Intercooler (CAC) boots weaken with age, leading to potential failures, boost leaks, and a noticeable loss of power in your Ford 6.4L Powerstroke. Eliminate these issues and keep your boost where it b

7.3 Powerstroke HPOP O-Ring Kit: Fix the Valley Leak the Smart Way

If you’ve got oil pooling in the 7.3 engine valley (under the fuel bowl/HPOP area), the HPOP is always on the suspect list—especially the rear/end plug and the high-pressure discharge fittings. You ca

7.3L Powerstroke Turbo Rebuild Kits, With an Upgrade

The Problem: Turbo failure, it's not if, but when you'll deal with it. There's multiple ways to go about fixing your turbocharger woes. Hands down the least expensive, rebuild it yourself. It's easier

Silicone CAC Boot Replacements for Ford Powerstroke Trucks

Factory Powerstroke intercooler/turbo boots take a beating from heat, oil vapor, boost pressure, clamp load, and just general use over the years. Eventually they swell, crack, soften, seep, or lose th

7.3L Powerstroke - Exhaust Back Pressure Sensor Diagnosis

The 7.3L Powerstroke doesn’t have too many sensors compared to more modern era diesel’s, but the ones it does have all play important roles. This week, we’ll be diving into the Exhaust Back Pressure S

Complete CAC Intercooler Boot and Clamp Kits for 2008–2010 6.4L Powerstroke

The 2008–2010 6.4L Powerstroke CAC system lives in a harsher environment than earlier Powerstroke generations did. Quick boost changes, heat, oil vapor, increased boost pressure, towing load, and age

Donaldson Blue vs. Motorcraft: Ford 7.3 Powerstroke Oil Filters

We sell both the Donaldson Blue DBL7405 and the OEM Motorcraft FL-1995-A for the 1994–2003 7.3 Powerstroke. Neither is a filter we’d hesitate to run. They’re just built with different priorities. Ford

Rebuilding The 7.3L Injection Pressure Regulator (IPR) - It’s easier than you’d think

The HEUI system on the 7.3L Powerstroke uses high-pressure oil for the fuel injection event. We won’t fully go into the system’s specifics here, but good clean oil is very important to its operation.

Low Pressure Oil Filtration - Not all 7.3's are built the same

Good clean oil is extremely important to a 7.3L. Moreso than for most other engines. That's because the oil is used differently than with most other engines. The 7.3L injection system is more like a h

6.0 Powerstroke Torque Specs: Full Bolt Torque Chart for 2003–2007 Ford Diesel Engines

Bolt torque for the 6.0 Powerstroke shouldn’t be guesswork. So we pulled the specs from Ford service manuals and other trusted sources, then organized them all in one place below. Consider this your g

Common 4x4 Problems on 1994–2010 Ford F-250/350 Trucks: Symptoms, Causes, and Fixes

If you are chasing 1994–2010 Ford F-250 4x4 problems, the good news is most of them follow a pattern. On the 1994–1997 OBS trucks, the biggest issue is usually the automatic locking hubs. On the 1999–

Riffraff Diesel Valve Spring Compressor Tool for 1994–2003 7.3 Powerstrokes

Valve spring work on a 7.3 Powerstroke is not hard because the job is complicated. It’s usually a job done with the heads off, and with a large specialized tool. But if the truck runs fine, taking the