Suzuki Samurai 1986 Service Manual page 44

Condition
Surges
(Engine power varia-
tion under steady
throttle or cruise.
Feels like the car
speeds up and down
with no change in the
accelerator pedal.)
Dieseling
(Engine continues to
run after ignition
switch is turned off.
it runs unevenly and
may make knocking
noise. )
Erratic idling
(Improper engine
idling)
Possible cause
Fuel system out of order
1. Clogged fuel filter
2. Kinky, leaky or damaged fuel hoses and lines
3. Malfunctioning fuel pump
4. Leaky manifold and carburetor gaskets
5. Improper float level
Ignition system out of order
2. Malfunctioning ignition timing advancers
(mechanical and vacuum)
3. Leaky or loosely connected high tension cord
4. Defective spark plug (excess carbon deposits,
improper gap, burned electrodes, etc..)
5. Cracked rotor or cap in distributor
Emission control
1. Malfunctioning bowl vent solenoid valve
2. Malfunctioning throttle position switch
(wide open switch)
3. Malfunctioning high altitude switch
4. Malfunctioning EGR valve
5. Malfunctioning thermostatically controlled
air cleaner
Malfunctioning fuel cut solenoid valve in
carburetor
Abnormal condition in ignition system
1. Defective spark plug
2. Leaky or disconnected high tension cord
3. Worn distributor terminals
4. Improper ignition timing
5. Cracked cap in distributor, leakage inside
Correction
Replace
Check and replace as
necessary
Check and replace as
necessary
Replace
Adjust
Adjust
Check or replace
Check and repair or
replace
Check and clean, adjust
or replace
Replace
Check and replace as
necessary
Check and replace as
necessary
Check and replace as
necessary
Check and replace as
necessary
Check and replace as
necessary.
Check solenoid valve for
proper operation and
replace as necessary
Adjust or replace
Connect or replace
Replace
Adjust
Replace
2-5