2 Strokes Down Under

I have a 2002 NSR150 SP. I recently purchased in great condition. The engine as far as I know is pretty much stock with a DBS full exhaust. My question is when the bike is in Neutral, I can rev the engine and it sounds fine. But when I put it into first gear to take off it almost wants to die. At stop lights I have to give it a few quick twists of the throttle to get it to go when I release the clutch. So that's it. What should I be looking at. I just put in a new plug so that's not it. Any ideas? Thanks.

telly wrote: What should I be looking at.

Jetting/tuning.

Tune carb, and maybe ignition timing, to pipe. Refer to experience 2t tuner mechanic e.g specialist mx mechanic,

Or it might just be the character of the pipe. Pipes don't create hp as much as concentrated and move it around in the power curve.

I'll try tuning the carb and rejetting if needed. Never did ignition timing on a bike before but will read up on it.

So I believe I found out the reason. The previous owner used a vacuum hose I believe for the fuel line from tank to carb. Overtime the gas dried the hose shrinking it suffocating the carb. Which is also why when I adjusted my air needle it was less than one full turn out for best mixture. I wondered why so little air was needed. Never would have found out except I went to install an inline fuel filter and noticed.

Nice easy fix!