09/20/2026
This early 6.0L Powerstroke was towed into Black Cat Diesel with a classic crank-no-start condition. Upon arrival, we were able to get the truck started, but it had little to no throttle response and struggled to stay running. Once the engine began to reach operating temperature, it stalled and returned to the same crank no start condition.
Upon diagnosis, the IPR valve and ICP sensor readings pointed toward a high-pressure oil leak. We performed an air test on the high-pressure oil system and observed air bubbling back through the oil filter housing, along with a small but noticeable leak under each valve cover.
To pinpoint the failure, we removed the turbocharger and HPOP cover to perform another air test, where air was found leaking past the shaft seal on the high-pressure oil pump. The pump was removed and bench tested, confirming the same failure. We then air-tested the remaining components of the high-pressure oil system to verify no additional leaks were present.
This customer opted to go with the Dieselsite Adrenaline high-volume HPOP to help support the 190/30 injectors installed in the truck, while eliminating the weak points of the factory early style HPOP’s.
To complete the repair we installed the new Dieselsite Adrenaline HPOP, and then resealed the HPOP cover and turbo feed/drain lines with fresh OEM gasket kits.
Another 6.0L diagnosed and repaired properly with only the best parts for the application!
📍 Black Cat Diesel, LLC | Littlestown, PA
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