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artr1955's avatar
artr1955
Explorer
Dec 02, 2019

My generac diesel generator only runs with prime button

Diesel generator only runs with prime button held down model 004270-3.
Oil level and coolant are fine as the breaker and 14 amp fuse. The thing that perplexed me is why it runs about 30 second after running after priming, it will run if holding down the start button.
  • K_Charles's avatar
    K_Charles
    Explorer
    Dec 03, 2019
    Matt_Colie wrote:
    In general terms, that prime button by-passes some safeties. There is probably something like a low oil pressure switch that wants some attention. OR, you could jumper in the prime circuit and see what breaks first.

    Matt

    At work we used to say the worse the problem gets the easier it is to find.
  • Matt_Colie's avatar
    Matt_Colie
    Explorer II
    Dec 03, 2019
    In general terms, that prime button by-passes some safeties. There is probably something like a low oil pressure switch that wants some attention. OR, you could jumper in the prime circuit and see what breaks first.

    Matt

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