Jammed Bendix
gear
Loosen starter motor to free gear
Defective Starter
Motor
Replace motor
Starter
motor turns
but does not
crank
engine
Partially
discharged battery
Charge or replace battery
Defective wiring or
wiring of too low
capacity
Check wiring for worn acid spots.
Broken Bendix
Drive
Remove starter motor and repair drive
Engine will
not start
Empty fuel tank fill tank with proper fuel
Flooded Engine Remove spark plugs and crank engine several times. Replace
plugs.
Water in fuel
system
If water is found, clean tank, fuel lines, and carburetor. Refill with
proper fuel.
Inoperative or
sticking choke
valve
Check valve, linkage, and choke rod or cable for proper
operation.
Improperly
adjusted carburetor
Adjust carburetor
Clogged fuel lines
or defective fuel
pump
Disconnect fuel line at carburetor. If fuel does not flow freely
when engine is cranked clean fuel line and sediment bowl. If fuel
still does not flow freely after cleaning, repair or replace pump.
Engine will
not start.
(Poor
compression
and other
causes)
Air leak around
intake manifold
Check for leak by squirting oil around intake connections. If leak
is found, tighten manifold and if necessary replace gaskets.
Loose Spark Plugs Check all plugs for proper seating, gasket and tightness.
Replace all damaged plugs and gaskets.
Loosely seating
valves
Check for broken or weak valve springs, warped stems, carbon
and gum deposits, and insufficient tappet clearance
Damaged cylinder
head gasket
Check for leaks around gasket when engine is cranked. If a leak
is found replace gasket.
Worn or broken
piston rings
Replace broken and worn rings. Check cylinders for "out of
round" and "taper".
Excessive
engine
temperature
No water
circulation
Check for clogged water lines and restricted inlets and outlets.
Check for broken or stuck thermostat. Look for worn or damaged
water pump or water pump drive.
Engine
temperature
too low
Broken or stuck
thermostat
Replace thermostat.
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