| HARD STARTING |
Improper starting procedure causing a flooded engine,
Improper carburettor fuel level.
Improper idle adjustments.
Sticking or incorrectly seating fuel inlet needle.
Incorrect fuel pump pressure.
Improper carburettor gasket and spacer combination.
|
Incorrect setting of choke thermostatic spring housing.
Choke linkage or plate binding.
Binding or broken manual choke linkage.
Restrictions or air leaks in the choke vacuum or hot air passages.
Dirty air cleaner element.
|
| STALLING (ENGINE HOT OR COLD) |
Incorrect idle fuel mixture.
Engine idle speed too slow (fast or cold idle adjustments).
Dirt, water or Ice in fuel filter.
Positive crankcase ventilation sys-tem malfunctioning.
Fuel lines restricted or leaking air.
Fuel tank vent restricted.
Leaking intake manifold or car-burettor gaskets.
Carburettor icing (cold, wet or humid weather).
|
Incorrect throttle linkage adjust- ment to carburettor.
Clogged air bleeds or idle passages.
Defective fuel pump.
Hot Only:
Improperly adjusted or defective carburettor dashpot.
Idle compensator malfunctioning (if so equipped).
Coolant control thermostat defective.
Excessive looseness of throttle shaft in bore(s) of throttle body.
|
SEVERE TRANSMISSION
ENGAGEMENT AFTER
COLD ENGINE START
|
Carburettor fast idle speed setting too high.
Throttle operating on starting step (highest step) of the fast
|
idle cam.
Binding or sticking throttle link-age or accelerator pedal.
|
AUTOMATIC CHOKE
SLOW WARM-UP, ON
TOO OFTEN
|
Thermostatic choke setting too rich.
Choke linkage sticking or binding. Incorrect choke linkage adjustment.
Choke plate misaligned or binding in air horn.
|
Defective coolant thermostat.
Restricted coolant line at carbu rettor.
Restriction or air leak in the choke vacuum or hot air passage.
|
| ROUGH IDLE |
Positive crankcase ventilation system malfunctioning.
Incorrect Idle mixture adjustment. Idle compensator malfunction (If so equipped).
Idle adjusting needle(s) grooved, worn, or otherwise damaged.
Idle air bleeds restricted.
Power valve leaking.
Restricted air bleeds.
Plugged idle fuel channel re-strictor.
Worn or damaged main metering jet.
Accelerating pump discharge ball check and/or, weight not seating properly.
|
Idle air or fuel passages restricted.
Idle discharge holes restricted.
Idle discharge holes not in proper relation to throttle plate(s).
Excessive dirt in air cleaner.
High or low fuel level or float setting.
Fuel Inlet needle not seating properly, or worn needle or seat.
Fuel pump pressure too low, or excessive.
Restriction in main fuel passage.
|
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