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Fuel System
Troubleshooting
Engine won't Start
Engine Stalls. Hard to Start, Rough Idling
Too much fuel getting to the engine
- Fuel line restricted
-
Air cleaner clogged
Ignition malfunction
-
Flooded carburetor
Fuel mixture too leanlrich
Intake air leak
Fuel contaminated/deteriorated
Fuel contaminated/deteriorated
Intake air leak
Bystarter circuit clogged
Idle speed misadjusted
No fuel to carburetor
Float level misadjusted
Fuel strainer clogged
Fuel tank breather hole clogged
Fuel tube clogged
Fuel pump malfunction
-- Float level misadjusted
Pilot screw misadjusted
-- Fuel tank breather hole clogged
Bystarter circuit clogged
Fuel pump malfunction
Hoses of the emission control system faulty (California
model only)
Lean Mixture
Purge control valve faulty (California model only)
Fuel jets clogged
Float valve faulty
Afterburn On Deceleration
Float level too low
Lean mixture in slow circuit
Fuel line restricted
Air cut-off valve malfunction
Carburetor air vent tube clogged
Hoses of emission control system faulty (California
Intake air leak
model only)
Throttle valve faulty
Vacuum piston faulty
Backfiring or Misfiring During Acceleration
Fuel pump malfunction
Ignition system faulty
•
Fuel mixture too lean
Rich Mixture
Float valve faulty
Poor Performance (Driveability) and Poor Fuel Economy
Float level too high
Fuel system clogged
Air jets clogged
Ignition malfunction
)
Air cleaner element contaminated
Damaged/misconnected emission control system hoses
Flooded carburetor
(California model only)
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