CYLINDER/PISTON
TROUBLESHOOTING
Compression too
low,
hard starting or poor
performance
at low speed
•
Leaking
cylinder
head gasket
•
Worn, stuck or
broken piston
ring
•
Worn or
damaged
cylinder and
piston
Compression too
high,
overheating or knocking
•
Excessive carbon built-up on
piston
head
or
combustion
chamber
E)(cessive
smoke
•
Worn cylinder, piston or
piston
rings
•
Improper installation of
piston
rings
•
Scored or scratched piston or cylinder wall
Abnormal
noise
•
Worn piston
pin
or piston pin
bore
•
Worn connecting
rod
small end
•
Worn
cyl
inde r. piston or piston rings
9-4