Federal and Canada
MC Valve Thermo Valve M T Only HAI Diaphragm Outer Vent Control Valve DP A T Only COMPONENT LAYOUT AND SCHEMATIC DRAWING
Install rocker arm assembly
INSTALL CHAIN COVER BOLT See step 4 on page EM-27 INSTALL CAM SPROCKET ON CAMSHAFT See step 5 on page EM-27 INSTALL DISTRIBUTOR DRIVE GEAR See step 6 on page EM-28 ADJUST VALVES CLEARANCE See step 7 on page EM-28
Check Thermo Switch By Using Ohmmeter 1
a Drain the coolant from the radiator into a suitable container. b Remove the thermo switch from the intake manifold. c Cool the thermo switch to below 6 C 43 F . d Using an ohmmeter, check that there is continuity. e Heat the switch to above 18 C 64 F with hot water. f Check that there is no continuity. g Apply liquid sealer to the threads of the switch and reinstall. h Fill the radiator with coolant.
Cylinder Head
Camshaft and Bearing Cap Cylinder Head I kg-cm ft-lb, N-m Tightening torque Non-reusable part 1. DISCONNECT CABLE FROM NEGATIVE TERMINAL OF BATTERY 2. DRAIN COOLANT FROM RADIATOR AND CYLINDER BLOCK 5. DISCONNECT EXHAUST PIPE FROM EXHAUST MANIFOLD a Disconnect the Ox sensor wire. b Remove three nuts holding exhaust manifold to the exhaust pipe. 6. DISCONNECT RADIATOR UPPER HOSE FROM THERMOSTAT HOUSING 8. DISCONNECT ACCELERATOR CABLE Disconnect the accelerator cable and throttle cable for A T...
Check Bvsv Vsv And Egr Vacuum Modulator With Hot Engine
b Check that the vacuum gauge indicates low vacuum at 3,000 rpm. c Disconnect the vacuum hose from port R of the EGR vacuum modulator and connect port R directly to the intake manifold with another hose. d Check that the vacuum gauge indicates high vacuum at 3,000 rpm. NOTE As a large amount of EGR gas enters, the engine will misfire slightly at this time. e Disconnect the vacuum gauge and reconnect the vacuum hoses to the proper locations.
TOYOTA TRUCK RUNNER Gasoline REPAIR MANUAL
ENGINE MECHANICAL EMISSION CONTROL SYSTEM EFI SYSTEM FUEL SYSTEM COOLING SYSTEM LUBRICATION SYSTEM Mill IGNITION SYSTEM STARTING SYSTEM CHARGING SYSTEM MANUAL TRANSMISSION AUTOMATIC TRANSMISSION TRANSFER PROPELLER SHAFT FRONT AXLE AND SUSPENSION REAR AXLE AND SUSPENSION BRAKE SYSTEM STEERING BODY ELECTRICAL SYSTEM SERVICE SPECIFICATIONS STANDARD BOLT TIGHTENING TORQUE All rights reserved. This book may not be reproduced or copied, in whole or in part, without the written permission of Toyota...
Positive Craimkcase Ventilation Pcv System
To reduce HC emissions, crankcase blow-by gas HC is routed through the PCV valve to the intake manifold for combustion in the cylinders. OPCV VALVE IS OPEN. oVACUUM PASSAGE IS LARGE. OPCV VALVE IS OPEN. OVACUUM PASSAGE IS SMALL.
Check Bvsv By Blowing Air Into Pipe Xqt
a Drain the coolant from the radiator into a suitable container. b Remove the BVSV from the intake manifold. c Cool the BVSV to below 55 C 131 F . d Check that air flows from pipe J to pipe L. e Heat the BVSV to above 74 C 165 F . f Check that air flows from pipe J to pipe K. If a problem is found replace the BVSV. g Apply liquid sealer to the threads of the BVSV and reinstall. h Fill the radiator with coolant.
Efi System
SYSTEM INSPECTION DIAGNOSIS CIRCUIT WITH FUEL Fuel Cold Start Pressure Fuel Tank and AIR INTAKE Air Flow Air Throttle ELECTRONIC CONTROL Location of Electronic Control Main Circuit Opening Solenoid Start Injector Time Water Thermo Ox Fuel Cut The EFI used on Toyotas has three basic systems. FUEL SYSTEM An electric fuel pump supplies sufficient fuel, under a constant pressure, to the EFI injectors. These injectors inject a metered quantity of fuel into the intake manifold in accordance with...
Symptomdifficult To Start Or No Start Engine Will Not Crank Or Cranks Slowly
SYMPTON - DIFFICULT TO START OR NO START CRANKS OK
Check Seating Of Egr Valve 1
Start the engine and check that the engine starts and runs at idle.
Choke Opener System
After warm-up, this system forcibly holds the choke valve open to prevent an over-rich mixture and release the fast idle cam to the 4th step to lower the engine rpm.
Check The Check Valve
a Disconnect the vacuum hose from lowest port of the HAC valve, and plug the hose end. b Disconnect the vacuum hose between the check valve and vacuum pipe at the pipe side, and plug the pipe end. c Check that the ignition timing remains stationary for more than one minute. d Stop the engine and reconnect the hoses to the vacuum pipe and HAC valve.
Exhaust Gas Recirculation Egr System
To reduce NOx emission, part of the exhaust gases are recirculated through the EGR valve to the intake manifold to lower the maximum combustion temperature. Pressure in the EGR Valve Pressure Chamber Positioned between E port amp R port Pressure constantly alternating between low and high Remarks Pressure increase- Modulator closes- EGR valve opens- Pressure drops 1-EGR valve closes- -Modulator opens -' When the throttle valve is positioned above the R port, the EGR vacuum modulator will close...
DASH POT DP SYSTEM AT Vehicles Only
To reduce HC and CO emissions, when decelerating the dash pot opens the throttle valve slightly more than at idle. This causes the air-fuel mixture to burn completely. To reduce HC and CO emissions, when decelerating the dash pot opens the throttle valve slightly more than at idle. This causes the air-fuel mixture to burn completely. Pushed in by return force of throttle valve Pushed in by return force of throttle valve Slightly opens and then slowly closes to idle position
check vacuum circuit continuity in vsv by blowing air into pipe
a Connect the VSV terminals to the battery terminal as shown. b Blow into a pipe, and check that the VSV is open. c Disconnect the battery positive terminal. d Blow into a pipe and check that the VSV is closed.
Check Bvsv Diaphragm And Linkage With Warm Engine
a Warm up the engine to normal operating temperature. b Disconnect the vacuum hose from the choke opener diaphragm. While holding the throttle slightly open, push the choke valve closed, and hold it closed as you release the throttle valve. d Start the engine, but do not touch the accelerator pedal. e Reconnect the vacuum hose, and check that the choke linkage moves, and that the fast idle cam is released to the 4th step.
Post Installation
1. INSTALL VANE PUMP WITH BRACKET WITH POWER STEERING Install the vane pump with the six bolts. Torque the bolts. Torque 450 kg-cm 33 ft-lb, 44 N-m 2. INSTALL DRIVE BELT AND ADJUST BELT TENSION See page MA-17 3. INSTALL DISTRIBUTOR AND SPARK PLUGS 4. INSTALL BOND CABLE OF REAR SIDE a Vacuum switch, EBCV Ex. Calif. and VSV with the bracket b HAC to bracket Ex. Calif. c Fuel return hose to the fuel return pipe d Fuel main hose to the fuel inlet pipe b Fuel cut solenoid valve wire e Water...
Efi Engine
SYSTEM positive crankcase ventilation pcv EVAP DASH POT DP THREE-WAY CATALYST TWC SYSTEM POSITIVE CRANKCASE VENTILATION PCV EVAP MIXTURE CONTROL MC SYSTEM DASH POT DP FEEDBACK CONTROL AIR SUCTION AS SYSTEM THREE-WAY CATALYST TWC OXIDATION CATALYST OC AUXILIARY 1. Automatic Hot Air Intake HAI System EC-53 2. Automatic Choke 3. Choke Breaker CB 4. Choke Opener 5. Auxiliary Acceleration Pump AAP System EC-61 6. Deceleration Fuel Cut 7. Idle Advance 8. Cold Mixture Heater CMH See page EM-2 for EFI...
California 1
To maintain a stoichiometric air fuel ratio in order to simultaneously reduce HC, CO and NOx emissions by the three-way catalyst, consist of the fuel system feedback control system and air suction feedback system. Remarks By means of vacuum switch, detects heavy load driving condition. Signal of air-fuel ratio of inlet gas for TWC. By means of Ox sensor, detects oxygen concentration in exhaust manifold after combusion. If air-fuel ratio is rich for TWC, opens EACV and EBCV. If lean, closes EACV...
Check Bvsv By Blowing Air Into Pipe 1
a Drain the coolant from the radiator into a suitable container. c Cool the BVSV to below 30 C 86 F with cool water. d Blow air into a pipe and check that the BVSV is closed. e Heat the BVSV to above 44 C 111 F with hot water. f Blow air into a pipe and check that the BVSV is open. g Apply liquid sealer to the threads of the BVSV a reinstall. h Fill the radiator with coolant. If a problem is found, replace the BVSV.
Check Bvsv By Blowing Air Into Pipe
a Drain the coolant from the radiator into a suitable container. c Cool the BVSV to below 30 C 86 F . d Check that air flows from pipe J to the air filter. e Heat the BVSV to above 44 C 111 F . f Check that air flows from pipe J to pipe K. g Apply liquid sealer to the threads of the BVSV and reinstall. h Fill the radiator with coolant. If a problem is found, replace the BVSV.
Engine Tuneup
2. INSPECT AIR CLEANER See page MA-5 3. INSPECT SPARK PLUGS See page IG-4 4. INSPECT VALVE CLEARANCE See page MA-7 Valve clearance Intake 0.20 mm 0.008 in. 5. INSPECT IGNITION TIMING See step 3 on page IG-10 w vacuum advancer OFF 22R-E 5 BTDC w short terminal T 6. INSPECT CARBURETOR FLOAT LEVEL with Carburetor 7. INSPECT FAST IDLE SPEED with Carburetor 8. ADJUST IDLE SPEED See page MA-8 Idle speed with EFI 750 rpm with carburetor 700 rpm for M T 750 rpm for A T NOTE Adjust idle mixture as...
Check Bvsv And Egr Vacuum Modulator With Hot Engine
b Check that the vacuum gauge indicates low vacuum at 3,500 rpm. c Disconnect the vacuum hose from R port of the EGR vacuum modulator and connect R port directly to the intake manifold with another hose. d Check that the vacuum gauge indicates high vacuum at 3,500 rpm. NOTE As a large amount of EGR gas enters, the engir will misfire slightly at this time. e Disconnect the vacuum gauge and reconnect the vacuum hoses to the proper locations.
Inspection Of Outer Vent Control Valve
1. CHECK OUTER VENT CONTROL VALVE OPERATION Disconnect the outer vent hose from the carburetor. Blow air into the outer vent pipe and check that the outer vent control valve is open. d With the engine idling, blow air into the outer vent pipe and check that the outer vent control valve is closed. a Unplug the wiring connector. b Using an ohmmeter, measure the resistance between the positive terminal and the solenoid body. Specified resistance 63 73 Q at 20 C 68 F