What causes high pressure oil rail to leak?
The often-overlooked cause of this problem is the ball tube o-ring in the high pressure oil rail. If close examination of the failed injector seal indicates that it was eroded from the top to the bottom, then the root cause is in the high pressure oil rail.
What’s the difference between a 3126 and 3126E?
The 3126E was the same engine platform with even more advanced electronics and redesigned HPOP. The HPOP gave higher injection pressures and a new leak-free design. If the HPOP did leak, it would leak into the engine, unlike older designs that tended to leak to the exterior of the engine.
How to check oil rails in a 6.0L Powerstroke?
Any time the valve covers are removed from a 6.0L engine you should check the oil rails for leaks. This can be done by removing the ICP sensor and pressurizing the system with shop air. You will need to command the IPR valve closed with a scan tool in order to build pressure in the system.
How can I fix a leak in my oil rail?
This can be done by removing the ICP sensor and pressurizing the system with shop air. You will need to command the IPR valve closed with a scan tool in order to build pressure in the system. Frequently you will find leaks between the ball tube and the oil rail. If there is a leak at one ball tube it is probably wise to replace them all.
Do you have to replace high pressure oil inlet seals?
Note that if your injector high pressure oil inlet seals have failed you do NOT have to replace the injectors – see our 6.0L Powerstroke Diesel Injector Seal Kit instead. Our ball tube orings are made from a higher temperature Viton material to prevent repeat failure.
How to seal a high pressure oil manifold?
Inspect high pressure oil manifold: Verify oil inlet tubes are moveable Check injector oil inlet adaptors for internal o-ring extrusion and high pressure oil leak paths Replace any adaptors that are not moveable or have o-ring extrusion/oil leaks paths SteP 6: Measure groove in injector oil inlet tubes (see figure 3). Continued on reverse.
When to replace high pressure oil injectors 6.0L?
Since pressure in the high pressure oil system can exceed 3,500 PSI even slight surface abnormalities can result in problems over time. Note that if your injector high pressure oil inlet seals have failed you do NOT have to replace the injectors – see our 6.0L Powerstroke Diesel Injector Seal Kit instead.