Toyota 1PZ Repair Manual page 21

EM-10
ENGINE MECHANICAL - Troubleshooting (Diesel Engine Diagnosis)
(Possible Cause)
1. ENGINE WILL NOT RE-START
2. ROUGH IDLE
3. MALFUNCTION OF FUEL CUT
SOLENOID
4. NO FUEL INTO INJECTION
PUMP
HINT:
• First check that the air cleaner is not clogged or the engine overheating.
• Not applicable if the customer desires an output power higher than specified for that vehicle. For accuracy,
adjust with a chassis dynamo.
(Possible Cause)
1. IMPROPER ADJUSTMENT OF
ACCELERATOR CABLE
2. INSUFFICIENT MAXIMUM
SPEED
ENGINE SUDDENLY STOPS
(Check Procedure and Correction Method)
Check to see if engine re-starts according to pre-
scribed procedure.
If not, refer to ENGINE CRANKS NORMALLY BUT
WILL NOT START, above, and repair as necessary.
Refer to ROUGH IDLE WITH WARM ENGINE and
repair accordingly.
Refer to ENGINE CRANKS NORMALLY BUT WILL
NOT START, above, and check accordingly.
HINT: No operation noise from fuel cut solenoid
may be due to loose electrical connections, so check
connectors before proceeding with further repairs.
Refer to step 3 of ENGINE CRANKS NORMALLY
BUT WILL NOT START, above.
LACK OF POWER
(Check Procedure and Correction Method)
With accelerator fully depressed, check that adjust-
ing lever is in contact with maximum speed adjust-
ing screw. Also check if accelerator cable or linkage
is catching on something.
If necessary, adjust so that lever is in contact with
screw, or make other required repairs.
Check maximum speed. (See page EM-27)
Maximum speed:
1 PZ and 1 HZ
1HD-T
If not as above, adjust with maximum speed adjust-
ing screw.
4,500-4,700 rpm
4,300-4,500 rpm