Troubleshooting - Panterra Fusion Service Manual

54
5. Fuel System

Troubleshooting

Engine is hard to start
•No spark
•Low compression
•No fuel in carburetor
-Blocked fuel line
-Blocked fuel filter
-Blocked vacuum line
-Leaky vacuum line
-Dirty float needle
-Float set too high
Too much fuel to engine
-Blocked air filter
-Manifold air leak
-Bad auto choke
-Blocked air passage in carburetor
Air/fuel mixture too rich or too lean
•Bad auto choke
•Plugged idle jet
•Float needle stuck or dirty
•Float height too high or too low
•Blocked air passage in carburetor
•Dirty air filter
•Air leak at carburetor or manifold
NIKOTA USA: PANTERRA SCOOTER SERVICE MANUAL
Misfire under acceleration
•Poor spark
•Air mixture screw too lean
•Bad accelerator pump
Poor drivability
•Weak spark/bad ignition system
•Blocked fuel line
•Blocked fuel filter
•Bad fuel
•Water in fuel
•Air leak at carburetor or manifold
•Improper float level
•Bad auto choke
•Obstructed jet in carburetor
•Vacuum slide stuck
•Damaged vacuum diaphragm
•Dirt in carburetor
5-3
CHAPTER 5: FUEL SYSTEM