Question about 2003 Suzuki DR-Z 125
You stated that you "left it alone for a while"....if that is longer than a year, theres a few things that can happen here. Sounds like your pilot jets (idle jets) are plugged up and your float is sticking open. You should probably clean the carbs quick and see if that helps.
Otherwise another problem could just be that your Idle adjustment is set wrong. There should be a knob off to one side of the carb towards the bottom, usually has a black plastic or white plastic knob thing molded to it so you can change the idle by hand. But again, I'm pretty sure its your pilot jets plugged up.
I'll attach a picture of a carb for you to help. This is NOT your carb it is actually off a 1974 TX500, and the configuration is a little off, but it should help you a little bit. The pilot on yours is going to be about where I circled it in the picture (on this picture the pilot is actually under the black thing between the two I circled) but this should still help. The smaller one will most likely be plugged up. Goodluck!
Posted on Nov 08, 2010
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Posted on Jan 02, 2017
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