Riffraff Diesel Technical Knowledge Center
“My 7.3 Cranks But Won’t Start” — Symptoms, Codes, Things To Check, and a Diagnostic Tree
Jun 26th 2026
A 7.3L Powerstroke that cranks but won’t start does not automatically need a cam sensor, injectors, or an HPOP. It needs diagnosis. The 7.3 is simple compared to newer diesels, but it still need
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Top 10 7.3 Powerstroke Oil Leaks That Get Mistaken for a Rear Main Seal
Jun 2nd 2026
The 7.3L Powerstroke has a gift for making one leak look like another. Oil starts high, runs down the valley, follows the back of the block, coats the bellhousing, and suddenly everyone is yelling &ld
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OBS 7.3 Powerstroke TP38 Turbocharger Rebuild: Step By Step How To
May 29th 2026
Parts Required:
TP38 360 Bearing Rebuild Kit 94-97: Part# TP-360-OBS
Recommended Parts/Tools:
Riffraff Diesel Billet Compressor Wheel 94-03: Part# RDP170293
Garrett TP38 Compressor Housing
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Top 10 7.3 Powerstroke Scan Tool Readings Every Owner Should Know
May 21st 2026
A good scan tool can save you a pile of money if you know what numbers actually matter. Codes are useful, but live data is where the 7.3 starts telling on itself. Hard start, no-start, low power, smok
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7.3L Powerstroke Injector Tear Down: What's Inside?
Posted by Adam Blattenberg on May 5th 2026
The 7.3 Powerstroke’s HEUI injection system relies on oil pressure to fire the injectors. Unlike most light duty diesel injection systems on the road today, where the pump (CP3, CP4, VE, VP, etc
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