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

Relevance
  • 4 months 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.

  • 4 months ago

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

  • arther
    Lv 5
    4 months ago

    start with a new spark plug of the correct gap.

  • adam
    Lv 4
    4 months ago

    2 stroke? 4 stroke? you didnt say. 

Still have questions? Get answers by asking now.