CAT 3116 white smoke issue

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This topic contains 1 reply, has 1 voice, and was last updated by  Brian Henderson 5 months, 3 weeks ago.

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  • #50105 Reply

    Brian Henderson

    New to site, i have a 3116 that i am working on for a friend and am having some problems getting the white smoke to clear up , the engine originally was in a topkick truck and was taken out and put into a D5m dozzer , i have replaced injectors and run the rack and it spools up fairly quickly but smokes like a train at idle it is burning clean any suggestions would be greatly appreciatied

    #50779 Reply

    John Whelan

    Brian sounds like timing? I know you must have the tune up kit for these engines? They are fussy to set up.

    Here’s a couple of other problems that effect power.

    I’ve experienced compression getting by the injectors (pressurizes fuel tank) which required the seats to be machined or replaced.

    There is also a diaphragm in the governor that fails effecting the fuel rack.

    #51255 Reply


    Hello John!
    Really appreciate that you share you experiences with the community.

    I am working on a 290hp 3116. Yep, it’s ex-military. It was a National Guard M1088 which probably idled a lot. It has about 13k miles on it. I note what I would consider excessive minor-to-moderate blow-by, though the higher hp units do have move blow-by naturally. Oil pressure is runs around 60. It runs very well. I have manometer, but have never used it to check blow by before.

    My question is: I can do an in frame flexhone, and put new rings in. Would that be a waste of time, and better to just pull the whole thing? Maybe there are other issues that I should look for that you are aware of on the 3116?

    Thanks for your help!

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