Engine Will Not Start Or Is Hard To Start; Trouble Shooting - CPI GTR 50 Service Manual

TROUBLE SHOOTING

ENGINE WILL NOT START OR IS HARD TO START

CHECK IF FUEL REACHES
CARBURETOR
1
FUEL REACHES
CARBURETOR
REMOVE SPARK PLUG AND
TEST SPARK
2
GOOD SPARK
TEST CYLINDER
COMPRESSION
3
NORMAL COMPRESSION
START ENGINE
ENGINE FIRES
4
REMOVE SPARK PLUG
5 DRY PLUG
START ENGINE WITH
6
CHOKE CLOSED
FUEL DOES NOT REACH
CARBURETOR
WEAK OR NO SPARK
LOW COMPRESSION
ENGINE FIRES, BUT
DOES NOT START
WET PLUG
《2-1》
CPI MOTOR
PROBABLE CAUSE
(1) NO FUEL IN TANK
(2) CLOGGED FUEL LINE BETWEEN
FUEL TANK AND CARBURETOR
(3) CLOGGED FUEL VALVE
(4) CLOGGED FUEL TANK CAP
BREATHER HOLE
(1) FAULTY OR FOULED PLUG
(2) FAULTY C.D.I.
(3) BROKEN OR SHORTED HIGH
TENSION CORD
(4) FAULTY IGNITION SWITCH
(5) INCORRECT IGNITION TIMING
(1) ENGINE NOT CRANKED
(2) NO VALVE CLEARANCE
(3) VALVE STUCK OPEN
(4) WORN CYLINDER AND PISTON
RINGS
(5) BLOWN CYLINDER HEAD GASKET
(6) FLAW IN CYLINDER HEAD
(7) INCORRECT VALVE TIMING
(8) BURNED VALVE
(1) CHOKE VALVE OPEN
(2) CARBURETOR PILOT SCREW OPEN
(3) AIR LEAKING THROUGH IN TAKE
PIPE
(4) INCORRECT IGNITION TIMING
(1) FLOODED CARBURETOR
(2) CHOKE VALVE CLOSED
GTR50