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volvo tamd74p unable to reach full rpm

Discussion in 'Engines' started by Bull Durham, May 23, 2012.

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  1. Bull Durham, May 23, 2012
    #1
    Bull Durham

    Bull Durham New Member

    Joined:
    Jun 25, 2011
    Messages:
    14
    Location:
    Port Moody B.C.
    i have the above engines. i have recently noticed a lot of soot on the transom after a couple of hours running and the port engine will not reach full rpm of 2600. 2375 or so is as high as it will go. the starboard engine is fine. any suggestions as to the cause. fuel filters both primary and secondary are new. no apparent blockage of the fuel lies or vents.fuel injector pump recently rebuilt and injectors cleaned.
  2. Sea Gull, May 23, 2012
    #2
    Sea Gull

    Sea Gull Member

    Joined:
    Aug 3, 2010
    Messages:
    167
    Location:
    CT
    Have you checked the port propeller?
  3. K1W1, May 23, 2012
    #3
    K1W1

    K1W1 Senior Member

    Joined:
    Sep 30, 2005
    Messages:
    7,427
    Location:
    My Office
    Hi,

    What condition is the turbocharger in?

    I have seen similar with a Volvo years ago and the turbo was found to be goosed.
  4. Bull Durham, May 23, 2012
    #4
    Bull Durham

    Bull Durham New Member

    Joined:
    Jun 25, 2011
    Messages:
    14
    Location:
    Port Moody B.C.
    tamd74p

    checked the prop last haulout and it was fine. due for a haul out next month and will check again. haven't checked the turbo as yet. 1265 hrs on the engine. i will check the boost and see if that is o.k.
  5. Capt J, May 23, 2012
    #5
    Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,524
    Location:
    Fort Lauderdale
    I had the exact same issue on the same Volvo's. It turned out to be bad air filters. Try removing them completely and running the boat (make sure nothing will get sucked into it).