Toyota 1HZ Repair Manual

FU-78 FUEL SYSTEM Injection Pump
(b) Measure the timer piston stroke at the below listed
rpms.
HINT: Check that the hysteresis is within 0.3 mm (0.012
in.)
(c) Using a 5 mm hexagon wrench, adjust by the timer
adjusting screw.
HI NT: The stroke will decrease with turn to clockwise and
increase with turn to counterclockwise.
9. (1HD-T)
CHECK AIR TIGHTNESS OF BOOST COMPENSATOR
(a) Apply 1.00 kg/cm
2
(14.2 psi, 98 kPa) of pressure to
the boost compensator.
(b) Measure the time it takes for the pressure to drop to
0.97 kg/cm
2
(13.8 psi, 95 kPa).
Pressure drop: 10 seconds or more
10. ADJUST FULL LOAD INJECTION VOLUME
(a) The adjusting lever angle for the adjustment below
should be as shown in the illustration.

Toyota 1HZ Specifications

General

Fuel Type	Diesel
Maximum Power	96 kW (129 hp) at 3800 rpm
Firing Order	1-5-3-6-2-4
Aspiration	Naturally aspirated
Fuel System	Direct injection
Cooling System	Water-cooled
Displacement	4.2 L (4164 cc)
Maximum Torque	285 N·m (210 lb·ft) at 2200 rpm
Valvetrain	SOHC, 12 valves (2 per cylinder)