I'm installing jake brakes on a n-14, however I have a question. I put them on adjusted the lash and was test them without the valve covers on and I noticed oil seeping around the control valve area. Is this normal? 3 are doing it the rest aren't.
The best way is to get the repair manual and to check this. There you will find the right answer to your question. I find it for you here: N14 Repair Manual Download Best regards.
I'm not convinced it'll have anything about that in there.. I have the jake brake manuals already