Load Maximum Speed Inspection And; Adjustment; Compression Inspection - Toyota 4Y 2006 Manual

Vacuum
ho6e
INSPECTION-ADJUSTMENT OF IDLE
SPEED
Warm-up the engine
Standard
Coolant temperature: 75°C (167°F) or above
Hydraulic oil temperature: 50°C (122°F) or above
Engine oil temperature: 60°C (140°F) or above
Install the rev counter and vacuum gauge.
(1) Install the rev counter.
(2) Disconnect the vacuum hose from the vacuum advancer,
and connect the vacuum gauge.
Inspect and adjust the idle speed.
(1) Start the engine and alternately adjust the throttle
adjusting screw "A" and the idle adjusting screw "B", to
adjust so that the vacuum is at a stable maximum at the
regulation idle speed.
(2) If the idle up adjusting screw is connected to the idle up
actuator rod and the idle speed does not reduce, loosen
the idle up adjusting screw. (See P2-43)
Standard
Idle speed: Refer to repair manual for each vehicle
model.
Vacuum: 400 mmHg or more
NO LOAD MAXIMUM SPEED INSPECTION
AND ADJUSTMENT
(See P4-24)
COMPRESSION INSPECTION
Note:
When there is a drop in power output or excessive oil
consumption, or if the fuel consumption is extremely high,
measure the compression pressure in the cylinders.
1. Warm-up the engine.
Standard
Coolant temperature: 75°C (167°F) or more
Hydraulic oil temperature: 50°C (122°F) or more
2. Remove all the spark plugs.
3. Disconnect the distributor connector.
4. Measure the compression pressure.
Caution:
Operate the starter before inspecting the compression in
order to expel foreign bodies from inside the cylinder.