Ford 1975 Mustang II Owner's Manual page 77

SCHEDULED MAINTENANCE
Complying With Federal Emission Standards '\
All 1975 Ford Motor Company vehicles have been certified as
me~'tjng
Federal emission standards. In order to do so, it has been necessary to
make certain adjustments and modifications that may reduce engine "-_
smoothness under certain operating conditions. Any minor
inconvenienc~,
that might be caused by these adjustments is more than outweighed by
the fundamental objective of IMPROVING OUR ENVIRONMENT.
Symptoms Indicating Need For
Emission Control Systems Service
The emissions control systems in your
l
1975 Ford-Built vehicle have been de-
signed to reduce the level of crankcase, exhaust and evaporative pollutants
as required by regulations. Changes in vehicle operation or performance,
such as the typical symptoms and causes listed on follOwing chart may
indicate increased levels of emissions and a need for vehicle service.
However, some causes for increased emission levels may not be detectable
by the driver, making it especially important to adhere to the scheduled
maintenance services to ensure proper control of vehicle pollutants and to
keep your emissions systems warranty in effect.
SYMPTOM
EMISSIONS SYSTEMS CHECK
Engine runs unusually. rough
Ignition system, fuel system, engine
or stalls ignition timing, exhaust gas recircu-
lating system, crankcase ventilation
system, or engine cylinder compres-
sion pressure.
Dieseling (engine continues to
Idle speed-including throttle sole-
run after ignition is shut off)
noid positioner adjustment, engine
ignition timing, fuel system, or en-
gine cooling system (too hot).
Blue or black smoke from Fuel system, ignition system, or
exhaust pipe engine cylinder compression pressure.
Gasoline odors Fuel system vent, fuel tank cap, or
engine flooded.
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