My engine is s OM 617.912 model 79 300D . While I was testing the engine running it at high rpm. I saw oil bubbling out from the base of the injector base At #1, #4,#5 nozzle base. They all are coming out from the same position. They only bubble at high rpm.

What can I do to remedy. It is very hard to remove the injector plugs. The base seem fixed. Is there a special tool to remove, or maybe re tighten it. Is there something I can do with the HEAD or have I done something wrong wrong the HEAD. I finished replacing my HEAD gasket. I checked re-checked the HEAD bolts. 65 ft.pounds.


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79 300D automatic
79 300D manual - under repair

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