Engine Suddenly Stops; Lack Of Power - Toyota 3b Repair Manual

ENGINE MECHANICAL
-
Diesel Engine Diagnosis
EM.9
ENGINE SUDDENLY STOPS
(Possible Cause) (Check Procedure and Correction Method)
1.
ENGINE WILL NOT RE-START
Check
to see if engine re-starts according to
prescribed procedure.
lf
not, refer
to
ENGINE
CRANKS NORMALLY
BUT
WILL
NOT START, above,
and repair as
necessary.
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LACK OF POWER
HINT:
1
.
First check that the air cleaner is not clogged or the engine overheating.
2. Not applicable if the customer desires an output power higher than specified for that vehicle.
For
accuracy, adjust
with
a chassis dynamo.
{Possible Cause}
(Check Procedure and Correction Method)
2.
ROUGH IDLE lf
idle is not stable, refer
to
ROUGH
IDLE
WITH
WARM
ENGINE and repair accordingly.
3.
MALFUNCTION OF
FUEL-CUT
SOLENOID
Refer
to
ENGINE
CRANKS NORMALLY
BUT
WILL
NOT START, above,
and check accordingly.
HINT:
No operation noise from the fuel cut
solenoid may be due
to
loose electrical
connections,
so check
connectors before
proceeding with further
repairs.
4.
NO FUEL INTO INJECTION
PUMP
Refer
to item
3 of
ENGINE
CRANKS NORMALLY
BUT
WILL
NOT START, above.
1.
IMPROPERACCELERATOR
CABLE ADJUSTMENT
With
accelerator
fully
depressed, check that the
adjusting lever is in contact with the maximum
speed
adjusting screw. (See
page EM-25)
lf
not, adjust accordingly.
2.
INSUFFICIENTMAXIMUM
SPEED
Start engine, depress the accelerator pedal to the
floor and check that maximum speed
is as specified
below.
(See page EM-25)
Maximum
speed:
B,
38
4,O5O
-
4,200
rpm
118,
148
4,050
-
4,250
rpm
lf
not, adjust
with the maximum
speed
adjusting
screw.