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Cummins 480 CE problem

Discussion in 'Engines' started by Petepd, May 1, 2008.

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  1. Capt Ralph, Oct 4, 2015
    #21
    Capt Ralph

    Capt Ralph Senior Member

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    10 years and 1000 hours? Lack of use issue. I had a problem with the original post (OP), 420 hours on a 3 year old boat. Glad something worked out for him.
    Going to be hard to push a claim on a 10 year old engine, Even if there was a (supposed) design problem.

    Please (re)read my #18 above.
  2. Marmot, Oct 4, 2015
    #22
    Marmot

    Marmot Senior Member

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    I like the bit about water in the fuel causing a valve seat failure.
  3. trmnewt, Oct 8, 2015
    #23
    trmnewt

    trmnewt Member

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    I have read plenty of posts like this on another site. Most production manufacturers are notorious for over-propping their engines to get more speed, and the engines simply can't handle it. My boat has Cummins 450c's, but the 480, as I understand it, is just the newer, electronic version of that engine. They should spin up to 2700-2750 RPM fully loaded in real-world conditions. Any less, they are over-loaded, and dropped valves are a common consequence. I admit I am not a diesel mechanic, just sharing what I have read to try to educate myself....
  4. Capt Ralph, Oct 9, 2015
    #24
    Capt Ralph

    Capt Ralph Senior Member

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    Didn't see that.
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