Recent content by thedozzman

Check the filter in the fuel tank tap and/or change the fuel line. As previously stated, check the spark plug, even new Chinese plugs are known to dodgy so get a proper NGK copper core or even an Iridium tipped one. Check the sealing surfaces on the inlet manifold, a small split in the gasket...

150cc, 155cc and 160cc barrels are the same height and same bore (60mm), the stroke of the crankshaft is the difference in displacement (53mm, 55mm and 57mm respectively).