1985 Yamaha Dirtbike wants to shut off when I give it throttle?

My 1985 Yamaha Dirtbike was working fine last night until I woke up and tried to start it! It started up just fine and sounded normal, BUT asoon as i tried giving it gas/More throttle it wants to shut off so I figured I'd let it warm up for 5 minutes I did that and it still does the same thing! I'm thinking the tube or carberator could be jammed with dirt? What do you think the issue could be???

Update:

4 stroke lol

4 Answers

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  • 1 month ago

    Change the spark plugs and gradually let off the choke as the engine warms up to prevent spark plug fouling again. When you park, turn the gas off.

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  • 1 month ago

    Rebuild the carburetor with a rebuild kit and a manual and carb cleaner.

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  • arther
    Lv 5
    1 month ago

    start with a new spark plug of the correct gap.

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  • adam
    Lv 4
    1 month ago

    2 stroke? 4 stroke? you didnt say. 

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    • adam
      Lv 4
      1 month agoReport

      look at yor spark plug. Is it wet with gas? is it black? Clean it and gap it again. Or replace it.

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