Click for JetForums Click for Perko Click for Northern Lights Click for Westport Click for Walker

Cummins 480 CE problem

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

You need to be registered and signed in to view this content.
Page 2 of 2
  1. Capt Ralph, Oct 4, 2015
    #21
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,427
    Location:
    Satsuma, FL
    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

    Joined:
    May 20, 2007
    Messages:
    3,311
    Location:
    9114 S. Central Ave
    I like the bit about water in the fuel causing a valve seat failure.
  3. trmnewt, Oct 8, 2015
    #23
    trmnewt

    trmnewt Member

    Joined:
    Mar 24, 2013
    Messages:
    83
    Location:
    Rochester
    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

    Joined:
    Sep 8, 2004
    Messages:
    13,427
    Location:
    Satsuma, FL
    Didn't see that.
Page 2 of 2