Why my cousin diesel truck knocks?

?Every time my cousins come to my house with his old Diesel Truck it knocks so loud Why my cousin Diesel truck knocks?

4 Answers

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  • 1 month ago

    That's the way diesels run. 22:1 compression on very low octane fuel  ( high cetane ) explodes real hard.

  • Anonymous
    1 month ago

    it's possible that it's supposed to sound like that. diesels don't sound like gasoline engines.

  • Barry
    Lv 6
    1 month ago

    It's knackered.

  • Rick
    Lv 6
    1 month ago

    worn-out valve lifters ????

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