18.
Troubleshooting
bgine
~oes
~ot
Stan Or
IS
Hard
TO
Stan
I
:
Possible Cause
Engine Does Not Start Or Is Hard
Poor Performance At High Speed
18-3
To Start
l8-'
Poor Handling
18-4
Engine Lacks Power
8-2
Hydraulic Tappet
18-4
Poor Performance At Low And Idle
Speeds
18-3
1.
Check fuel flow to carburetor Not Reaching Carburetor
-.
Clogged fuel tube or fuel strainel
I
-
Sticking float valve
-
~eaihing Carburetor
I
clogged fuel tank breather
Disconnected or faulty auto fuel
valve vacuum tube
2.
Perform a spark test Weak Or No Spark
.
Faulty spark plugs
t
I
.
Fouled spark plugs
Good Spark
Faulty ignition control module
.
Broken or shorted spark plug wires
.
Broken or shorted ingition coil
.
Faulty ignition switch
.
Faulty ignition pulse generator
-
Faultv enaine stor, switch
.
-
.
Loose or disconnected ignition
system wires
I
3.
Test cylinder Compression Low Compression
-.
Valve stuck open
-
Worn cylinder and piston rings
Compression Normal
Damaged cylinder head gasket
Seized valve
-
lmproper valve timing
i
4.
Start by following normal procedure-Engine Starts But Stops
-0
Improper choke operation
I
.
Carburetor incorrectly adjusted
~ngine Does Not Fire
-
Intake pipe leaking
.
lm~ro~er ianition timina (Faultv
..
-
ignition control moduleor igniion
I
pulse generator)
Fuel contaminated
1
5.
Remove and inspect spark plug- Wet Plug
-.
Carburetor flooded
.
Choke closed
.
Throttle valve open
.
Air cleaner dirty
To Next Page
Loading...
Need help?
General
