Advertisement
Fuel
System
Troubleshooting
Engine
Won't
Start
•
Too much fuel getting into cylinder
- Air filter clogged
- Flooded carburetor
Intake air leak
Fuel
contaminated/
deteriorated
No fuel to carburetor
-
Fuel
filter c logged
-
Fuel
tube clogged
- Fuel valve stuck
- Float level misadjusted
- Fuel tank breather tube clogged
Engine
Stall,
Or
Runs
Poorly
•
Ignition malfunction
Low compression
•
Rich mixture
Lean
mixture
• Air filter clogged
Intake air leak
•
Fuel contaminated
4-2
Lean
Mixture
•
Fuel
jets clogged
•
Fuel tank breather tube clogged
Fuel filter clogged
•
Fuel line restricted
•
Float
valve
faulty
•
Float
level
too low
• Air
vent tube clogged
•
Advanced ignition
timing
•
Intake air leak
•
Worn crankshaft seal !alternator side)
Rich Mixture
•
Choke valve in ON position
•
Float valve faulty
•
Float level too high
• Air jets clogged
•
Air filter element contaminated
• Flooded
carburetor
Worn
crankshaft seal (clutch side)
RICIERED
Advertisement
