gio Vyper 4WD 1100cc 2 seater Owner's Manual page 94

Engine power 2. Electrical parts
is not enough problem
3.Mechanical
problem
1. Fuel system fault
Engine
overheats
④ Too many lube
⑤ Problem or blocked in Injector
⑥Low-pressure in hight-pressure
fuel pump
① Dirt on plug
② Gap of plug not correct
③ Ignition loop problem
④ ECU problem
⑤ Magneto problem
① Gap of Valve is not correct
② The force of valve spring is
weak.
③ Air circulation is not right.
④ Cylinder worn out
⑤ Piston Ring worn out
⑥ Valve base not correct
⑦ Swing arm or cam shaft worn
out
① Octane number is lower
② Fuel pass blocked
③ Fuel pump problem
86
Clean or Change
Adjust or Change
Clean or Change
Change or Adjust
Change
Change
Change
Change operation method
Check, remove or change
Adjust
Change
Change
Change or repair
Change
Use the right fuel
Clean the fuel pass
Change