Engine Won't Slarl
Too much fuel getting to the engine
- Air cleaner clogged
- Flooded carburetor
I n take air leak
Fuel contaminated/deteriorated
No fuel to carburetor
- Fuel strainer clogged
- Fuel tube clogged
- Fuel valve stuck
- Float l e vel misadjusted
- Fuel tank breather hole clogged
Lean Mixture
Fuel jets clogged
Float valve faulty
Float l e vel too low
Fuel l i ne restricted
Carburetor air vent tube clogged
I n take air leak
Throttle valve faulty
Vacuum piston faulty
Rich Mixture
Float valve faulty
Float l e vel too high
Air jets clogged
Air cleaner contaminated
Flooded carburetor
Engine Stalls, Hard To Start, Rough Idling
Fuel l i ne reslricted
I g nition malfunction
Fuel mixture too l e an/rich
Fuel contaminated/deteriorated
I n take air leak
I d le speed misadjusted
Float l e vel misadjusted
Fuel tank breather hole clogged
Pilot screw misadjusted
Slow circuit clogged
Emission control system malfunction
- EVAP purge control valve
- Loose, disconnected or deteriorated hoses of the
emission control system
FUEL SYSTEM
Afterburn When Engine Braking Is Used
Lean mixture i n slow circuit
Emission control system malfunction
- Pulse secondary air supply system faulty
- Loose, disconnected or deteriorated hoses at the
emission control system
Afterburn Or Misfiring During Accelerallon
Ignition system faulty
•
Fuel mixture too lean
Poor Performance (Driveability) And Poor Fuel Economy
Fuel system clogged
Ignition malfunction
Emission control system malfunction
- Loose, disconnected or deteriorated hoses of the
emission control system
5-3