It seem that my NSR150SP is due for overhaul. I can hear some weird “loose” sound coming from the engine. Apparently, ah chong from Planet Motor says it’s my crankshaft bearing that has worn off.
Time to do a full overhaul which include:
- Piston
- Piston Ring
- Crankshaft Bearing
- Con Rod
Ahhh… 2 stroke is cheaper to overhaul compared to 4 stroke as it has lesser moving parts. I was quoted less than $500 by ah chong. But I think I would be looking into JB to overhaul since it’s almost half the price in SG! 
Nevertheless, as long as I don’t ride in high RPM, the engine still can last me for about 3 months more before the piston will jam. So I’ll take the risks and decide what to do then~
