From: 5b875fe93a681ed4e0e22aae4acab745@example.com   
      
   this is a long time ago, but i just ran into this and it sounds similar, so   
   maybe it'll help someone. rebuilt one of these motors out of a 95 topkick. the   
   distributor was bad, so I bought napa direct replacement PN# NNDST1830. no   
   knowing, it cut off oil    
   flow in the main galley, but shows oil pressure. after rebuilding the motor   
   again, i machined the new dist. to stop the oil passage blockage.   
      
   --   
   For full context, visit https://www.motorsforum.com/tech/bb-366-   
   ockers-clatter-oil-pressure-but-no-oil-at-rockers-27459-.htm   
      
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