Why my Hero Passion moves with difficulty when two person ride on it?
There may be many possible reasons for this like:
• Spark plug might be dirty, broken, or maladjusted.
• Fuel/air mixture might be incorrect.
• Engine oil viscosity too high.
• Battery voltage might be low • IC igniter trouble • Pickup coil trouble
• No valve clearance.
• Drive train trouble.
• Brake dragging.
We advise you to take your bike to your local Hero service center so that they will examine it for exact problem and sort that out.