Ok, so I just got a used nitro rustler with the trx .15. But I can't get it to start. The problem is that the fuel dosen't "pump" into the carb. If I take the high speed needle out the fuel shoots through the line and out the place where the needle goes. Is this a worn piston and sleeve issue?

Check to make sure the valve that the fuel line hooks up to is in line with the holes on the high speed needle.

When trying to start the engine with the fuel line attached do you see fuel moving thru the tube. Are you sure you have the high speed needle set properly?

Get into the tuning forums or better yet they have the manuel on line for tuning at traxxas.com............old rusty 1.5 pro was a great truck and easy to keep up with.........good luck[&o]