my bike won't idle for some reason. i have played with the screw that adjusts the slide heighth but it has no effect. my bike is a 90 rmx 250. i have new floats and needle-seat put in. it also has a backfire problem. it backfires and wet fouls my plug when first trying to start up. it also does it when i kill the bike riding. i am a novice rider and the lack of idle sucks when trail riding
carburetor questions
- Thread starter ageerx
- Start date
KenR
Member
- Feb 20, 2002
- 193
- 0
I suggest pulling the carb completely apart, pulling all the jets and cleaning everything real well with carb cleaner, using compressed air to blow everything dry.
Make a note of the jetting that's in the carb now, including pilot, main, needle type and clip position on the needle, and the number on the slide. Check the float height and make sure it's within spec.
Clean and oil the air filter. Pull the stator cover off and make sure it's clean and dry, and verify the timing is within spec. Put everything back together and install a fresh plug, then see if you still have the problem. Let us know what you come up with.
A service manual will be helpful also.
Make a note of the jetting that's in the carb now, including pilot, main, needle type and clip position on the needle, and the number on the slide. Check the float height and make sure it's within spec.
Clean and oil the air filter. Pull the stator cover off and make sure it's clean and dry, and verify the timing is within spec. Put everything back together and install a fresh plug, then see if you still have the problem. Let us know what you come up with.
A service manual will be helpful also.
