5. FUEL SYSTEM Mongoose/KXR 90/50
SPECIAL TOOL
Float level gauge
TROUBLESHOOTING
Engine cranks but won't start Engine lacks power
· No fuel in tank · Clogged air cleaner
· No fuel to carburetor · Faulty carburetor
· Cylinder flooded with fuel · Faulty ignition system
· No spark at plug
· Clogged air cleaner Lean mixture
· Intake air leak · Clogged carburetor fuel jets
· Improper throttle operation · Float level too low
· Intake air leak
Engine idles roughly, stalls or runs poorly · Clogged fuel tank cap breather hole
· Faulty auto bystarter · Bent, kinked or restricted fuel line
· Ignition malfunction
· Faulty carburetor Rich mixture
· Poor quality fuel · Float level too high
· Lean or rich mixture · Clogged air jets
· Incorrect idle speed · Clogged air cleaner
Misfiring during acceleration
· Faulty ignition system
· Faulty carburetor
Backfiring at deceleration
· Float level too low
· Incorrectly adjusted carburetor
· Faulty exhaust muffler
5-3
4.7 / 5