Toyota 1PZ Repair Manual page 23

EM-12 ENGINE MECHANICAL - Troubleshooting (Diesel Engine Diagnosis)
HINT: Check whether clutch slipping, brakes grabbing, tires wrong size or air filter clogged.
(Possible Cause)
1. FUEL LEAKAGE
2. IDLE SPEED TOO HIGH
3. MAXIMUM SPEED TOO HIGH
4. IMPROPER INJECTION TIMING
5. FAULTY INJECTION NOZZLES
EXCESSIVE FUEL CONSUMPTION
Refer to step 3 of ROUGH IDLE WITH WARM
ENGINE.
After sufficiently warming up engine, check idle
speed. (See page EM-27)
Idle speed:
If not as above, adjust with idle speed adjusting
screw.
Check maximum speed. (See page EM-27)
Maximum speed:
If not as above, adjust with maximum speed adjust-
ing screw.
Refer to step 7 of ENGINE CRANKS NORMALLY
BUT WILL NOT START.
Refer to step 9 of ENGINE CRANKS NORMALLY
BUT WILL NOT START.
(Check Procedure and Correction Method)
1PZ 600-700 rpm
1HZM/T 600-700 rpm
1HZA/T 660-760 rpm
1HD-T M/T 600-700 rpm
1H D -T A/T 750 - 850 rpm
1PZ and 1 HZ 4,500 - 4,700 rpm
1H D -T 4,300 - 4,500 rpm