It’s a good idea to check the valley frequently. Down below 500psi of startup pressure, and they might not fire at all. If the pressure’s low, they won’t operate efficiently. The injectors actuate by using high pressure oil in the oil rails. Other symptoms include a gradual loss of power due to lower pressure from the HPOP’s oil delivery system. The reservoir should have oil all the way up to within 3/4″ to 1″ from the top of the inspection plug. You can check for slow oil leaks from the 7.3 HPOP by checking the HPOP reservoir level (With the engine OFF!) So pull over immediately and inspect your engine valley for oil.

But, by the time a CEL comes on, you’re about to start walking. We’ll detail them below… 7.3 HPOP Oil Leak Symptoms HPOP Causes a Check Engine Light (CEL)Ī leaking HPOP O-ring won’t necessarily throw a CEL or cause noticeable drivability problems until enough oil is lost to reduce flow to your 7.3 injectors. Still, there are other HPOP leaks that can rob your engine of power or leave you stranded on the side of the road.

The fittings “click” into the HPOP and the heads and require a special tool to remove and reattach. The most common 7.3 Powerstroke high pressure oil pump (HPOP) leak happens when one or both of the HPOP O-rings on the oil line fittings fail.

Obs powerstroke