Trouble Shooting Charts - Carter INTERCEPTOR GTR 250 Owner's Manual

A. Engine hard to start or can not be started.
Check and Adjustment
Loosen carburetor drain bolt to
check if there is gasoline inside
the carburetor.
Fuel supplied to
carburetor sufficient.
Remove spark plug, install it
into spark plug cap, and perform
a spark test against engine
ground.
Check for sparks.
Perform cylinder compression
pressure test.
Cylinder compression
pressure normal.
Re-start by following the starting
procedures.
No ignition.
Remove the spark plug again
and check it.
Dry spark plug.
Remove carburetor after 30
minutes and connect a hose
onto fuel rich circuit then blow
the hose with air.
Blowing is normal.

TROUBLE SHOOTING CHARTS

Fault Condition
No fuel is supplied to
carburetor.
Weak sparks, no spark at
all.
Low compression
pressure or no pressure.
There are some signs of
ignition; nut engine can
not be started.
Wet spark plug.
Blowing clogged.
Probable Causes
No fuel in fuel tank.
Check if the pipes, fuel tank to carburetor,
and intake vacuum, are clogged.
Float valve clogged.
Lines in fuel tank evaporation system
clogged.
Malfunction of fuel pump.
Loose or damaged fuel pump vacuum
hose.
Fuel filter clogged.
Malfunction of spark plug.
Spark plug fouled.
Malfunction of CDI set.
Malfunction of AC generator.
Ignition coil is in open or short circuited.
Ignition coil leads open or short circuited.
Malfunction of main switch.
Piston ring seized.
Malfunction of cylinder valves.
Worn cylinder and piston ring.
Cylinder gasket leak.
Sand hole in compression parts.
Malfunction of throttle valve operation.
Air sucked into intake manifold.
Incorrect ignition timing.
Fuel level in carburetor too high.
Malfunction of throttle valve operation.
Throttle valve opening too wide.
Malfunction of automatic by-starter.
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