Suzuki RA410, Manual

Page: 256 / 761

6-12 ENGINE
Condition Possible Cause Reference Item
Engine hesitates
(Momentary lack of
response when
accelerator is
depressed.
Can occur at all
vehicle speeds.
Usually most severe
when first trying to
make vehicle move, as
when starting after
stop sign.)
Ignition system out of order
Spark plug faulty or plug gap out of
adjustment
Leaky high-tension cord
Fuel system out of order
Fuel pressure out of specification
– Clogged fuel filter
– Faulty fuel pressure regulator
Clogged fuel filter, hose or pipe
Engine overheating
Engine and emission control system out
of order
Faulty EGR system (if equipped)
Faulty injector
Faulty TP sensor, ECT sensor or MAP
sensor
Faulty ECM/PCM.
Low compression
Spark plugs in SECTION 6F1.
High-tension cords in SECTION 6F1.
Diag. Flow Table B-3 in SECTION 6E1.
Fuel pressure check in SECTION 6E1.
Refer to Overheating condition in this
table.
Diag. Flow Table B-5 in SECTION 6E1.
Fuel injector in SECTION 6E1.
TP sensor, ECT sensor or MAP
sensor in SECTION 6E1.
Inspection of ECM/PCM and its circuit
in SECTION 6E1.
Previously outlined.
Surges
(Engine power variation
under steady
throttle or cruise.
Feels like the vehicle
speeds up and down
with no change in
the accelerator
pedal.)
Ignition system out of order
Defective spark plug (excess carbon
deposits, improper gap, and burned
electrodes, etc.)
Leaky or loosely connected high-tension
cord
Cracked rotor or cap in distributor
Fuel system out of order
Variable fuel pressure
– Clogged fuel filter
– Kinky or damaged fuel hose and line
– Faulty fuel pressure regulator
Engine and emission control system out
of order
Faulty EGR system (if equipped)
Faulty MAP sensor
Faulty injector
Faulty ECM/PCM
Spark plugs in SECTION 6F1.
High-tension cords in SECTION 6F1.
Distributor in SECTION 6F1.
Diag. Flow Table B-3 in SECTION 6E1.
Diag. Flow Table B-6 in SECTION 6E1.
MAP sensor in SECTION 6E1.
Fuel injector in SECTION 6E1.
Inspection of ECM/PCM and its circuit
in SECTION 6E1.