Troubleshooting - KYMCO MXU 500 Owner's Manual

5
. FUEL SYSTEM

TROUBLESHOOTING

Engine cranks but won't start
No fuel in tank
No fuel to carburetor
Cylinder flooded with fuel
No spark at plug
Clogged air cleaner
Intake air leak
Improper throttle operation
Engine idles roughly, stalls or runs poorly
Excessively used choke
Ignition malfunction
Faulty carburetor
Poor quality fuel
Lean or rich mixture
Incorrect idle speed
Misfiring during acceleration
Faulty ignition system
Faulty carburetor
Backfiring at deceleration
Float level too low
Incorrectly adjusted carburetor
Faulty exhaust muffler
5-3
Engine lacks power
Clogged air cleaner
Faulty carburetor
Faulty ignition system
Lean mixture
Clogged carburetor fuel jets
Float level too low
Intake air leak
Clogged fuel tank cap breather hole
Kinked or restricted fuel line
Rich mixture
Float level too high
Clogged air jets
Clogged air cleaner
MXU 500