Dealing With Your Old OBS 7.3 Fuel Pump

If you're noticing a puddle of diesel sitting in the valley of your engine, your obs 7.3 fuel pump is likely the culprit. It's one of those rites of passage for anyone owning a 1994 to 1997 Ford Powerstroke. These trucks are legendary for their longevity, but the stock mechanical fuel system is often the first thing to remind you that your "bulletproof" rig is actually three decades old. ...

February 13, 2026 · 6 min · Niv Melotti