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    • Cummins Marine Forum Topics
    • Yanmar 6lya-stp black smoke 1 2

      This topic has 40 replies, has 4 voices, and was last updated byTony Athens 5 years ago

      July 29, 2017 at 2:14 pm Hi everyone …I am new on this forum…i would really appreciate a lot if i could get some suggestions in order to solve problem with my Yanmar 6lya-stp 370hp. I am owner of 33ft semi displacement boat located in Europe-Croatia. Recently i installed used yanmar engine with 1100 working hours. Proppeler size is 21×26 and according to calculation it should not be to big to cause over-propping problem. Black smoke starts at about 1…

      Started by: Antonio micula in: All Other Marine Diesels

      40 Replies
      October 28, 2018 at 6:12 am Let’s SEE your engines entire Crank Case Ventilation System…………..Just a factory hose going to ?? Not over filled in the crank case/oil pan ? More IS NEVER better on very shallow sump HIGH-RPM Engines in a planing boat. Usually the opposite works better (running on the low mark or even a tad below) when you have possible blow-by or oil whipping issues.

      Last Post by: Tony Athens posted: 5 years ago

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