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    • Cummins Marine Forum Topics
    • engine survey results

      This topic has 7 replies, has 4 voices, and was last updated byRob Schepis 2 years ago

      January 6, 2022 at 7:17 pm Hi Guys, Looking at purchasing a 61 nordlund with qsm 11  was able to get an engine survey and oil sample results  cold start no sighn of excessive smoker or oil/fuel slicks noted  1 engine with 11.13 fuel dilution the other engine with  6.82% surveyor said likely cause likely injector pump since no soot found in fuel.  Said there should be 0 fuel in oil.  conflict in data .  The surveyor fuel burn data in the low range seems really high ( in ge…

      Started by: Gregory in: Cummins Marine Engines

      7 Replies
      February 22, 2022 at 12:10 pm That’s a weird one, sounds like someone may have installed a “spare tire” at some point…

      Last Post by: Rob Schepis posted: 2 years ago

    • head oil leak ??

      This topic has 7 replies, has 4 voices, and was last updated byGregory 2 years ago

      October 17, 2019 at 5:37 pm I have 2006 6ctas with 4,803 hrs in a 1978 42 chris craft sport fisherman.. salt water boat. My port motor seems to have an oil leak on the back of the motor at the bottom of the head. does not seem to be the valve cover or anything else. Is this a head leak or even possible. Am I missing something. It is not enough to cause and oil drop over a season compared to the starboard side. Oil consumption maybe 2 quarts over 100-150 hrs a season e…

      Started by: Gregory in: Cummins Marine Engines

      7 Replies
      January 19, 2022 at 11:48 pm Yes it was.  There is a oil passage in that corner,  The old style gasket ( I was told) the rubber compression seal failed, maybe got hard. It was the source of the leak. 

      Last Post by: Gregory posted: 2 years ago

    • If all is right life of the qsm 11 manifold

      This topic has 1 reply, has 2 voices, and was last updated bySteve Lewis 2 years ago

      January 4, 2022 at 9:34 pm Hi all.  Happy new year.  I have read everything on here pertaining to the qsm11 exhaust leak,  Tony maybe you can help. Looking at purchasing a 61 Nordlund 1985 this weekend ( so quick response needed)  I know ist made on the west  coast but rare here on the east coast .  I Know 61  tolly craft is the  Nordlund 61 hull .  fyi my current boat ( due to Tony’s website ) has 6 cta with  over 5k hrs and going strong.  qsm 11 2007 vintage 2k hr…

      Started by: Gregory in: Cummins Marine Engines

      1 Reply
      January 5, 2022 at 9:17 am Is this boat named “Quiet Storm”? If so………. Looking at the pics the turbo has what I would consider reasonable heat discoloration for 2K hours.  I can not quite tell, but the usual spots for noticing soot from the exhaust manifold look relatively clean.  The “Run your finger on the metal” test will really speak volumes.  If your finger is clean(no soot) then odds are your manifolds are not leaking yet.  …

      Last Post by: Steve Lewis posted: 2 years ago

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Viewing 3 topics - 1 through 3 (of 3 total)