The high-pressure oil system is composed of two subsystems:
The hydraulic force necessary to inject fuel into the combustion chamber is provided by the ICP system. The fuel injectors on the engine are hydraulically actuated and electronically controlled.
The ICP system is composed of the following components:
The high-pressure oil pump receives engine lube oil from a reservoir cast into the vee of the crankcase. This reservoir makes available a constant supply of engine oil from the pump. This reservoir is constantly refilled by the low-pressure lube oil system with filtered oil from a passage in the oil cooler housing.
The high-pressure oil pump is mounted at the rear of the crankcase and is driven by the camshaft gear. Oil is drawn from the oil reservoir through a 200-micron screen and into a passage to the pump inlet port. High-pressure oil from the pump is distributed to the injectors through a series of tubes and manifolds.
The high-pressure discharge tube is mounted to the pump and serves to connect the oil flow from the high-pressure oil pump to the rear engine tube assembly. This tube assembly divides oil flow into two tubes or branches, one for each side of the engine. Rigid tubes in each branch direct oil up into the high-pressure oil rail of each cylinder head. Oil from the rails enters the injectors through O-ring sealed ports at the top of each injector. When the injector opening coil is energized, high-pressure oil is used to push fuel into the combustion chamber. After injection is complete, the oil inside the injector is vented through the top portion of the injector and allowed to drain back to the oil sump.
The lubrication system is pressure regulated, cooled, and full flow filtered. In addition to providing engine lubrication, it supplies oil to the high-pressure oil system to control fuel delivery in the fuel injectors.
The following sequence describes lube oil flow through the major oil system components:
click on the images to open them in a new window. these were the exploded views that i could find with description and names of components. once you locate you leaking component you can inquire back with me and i can advise you on the R&R if you'd like
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