Filter
Top Products
(4)
Incorrect Valve clearance
If
the correct compression
is
not obtained even after remedying the above, disassemble the engine
and check further as follows
:
a) Valve stuck open due to carbon or gum on the valve stem.
b)
If
the piston rings are stuck on the piston, remove the piston and connecting rod from the.engine.
Clean or replace the parts.
10-1
-3
IGNITION
SYSTEM
Check the followings for lack of sparks.
(1)
Wires
of
the ignition coil, spark plug or contact breaker disconnected.
(2)
Ignition
coil
damaged and shorted.
(3)
Spark plug cable wet or soaked with oil.
(4)
Spark plug dirty or wet.
(5)
Spark plug electrode gap incorrect.
(6)
Spark plug electrodes are connected or bridged.
(7)
Incorrect spark timing.
10-2
ENGINE
MISFIRES
(1)
Incorrect spark plug electrode gap. Adjust
it
to anywhere between
0.7
and
0.8
mm.
(2)
Ignition cable worn and leaking.
(3)
Sparks weak.
(4)
Ignition wire connections loose.
(5)
Water in gasoline.
(6)
Insufficient compression.
10-3
ENGINE
STOPS
(1)
Fuel tank empty, Water, dirt, gum, etc. in gasoline.
(2)
Vapor lock,
i.
e., gasoline evaporating in the fuel lines due to overheat around the engine.
(3)
Vapor lock
in
the fuel lines or carburetor due to the use of too volatile winter gas
in
the hot season.
(4)
Air vent hole in the fuel tank cap plugged.
(5)
Bearing parts seized due to lack
of
oil.
(6)
Magneto
or
ignition coil faulty.
-
57-