Why the cause of white smoke can be determined by oil loss via the valve guides
(1) The negative pressure of the intake manifold is high when the engine is idle, so oil is sucked into the combustion chamber (more…)
inspection
Automatic Aircondition Systm Inspection
Self-diagnosis System
1.Description
In the self-diagnosis system, the ECU transmits any abnormality that occurs in the indicator, sensors, and actuator to the control panel for display to notify the (more…)
Automotive Air Condition System Inspection with Manifold Gauge
1.Normal
If the refrigeration cycle is normal, the gauge pressure values are as shown.
Low-pressure side
0.15 to 0.25 MPa (1.5 to 2.5 kgf/cm
Automotive Air Condition System Inspection/Test
Notes for Maintenance of Air Conditioning System
1.When handling refrigerant the following precautions must be observed
Do not handle refrigerant in an enclosed area or near an open flame.
Always (more…)
Inspection of Automotive Antenna
1.Inspection of antenna (with radio turned on)
Turn on the radio with the ignition switch in the ACC position and check the following items:
(1)Check antenna cable for open circuit
Turn the volume to (more…)
Inspection in Charging System
1.No-load test (inspect charging circuit without load)
In the no-load test, whether the generated voltage is maintained at a constant level (regulated voltage) is cheeked even if the alternator speed (more…)
Inspection of the Battery Voltage
When the starter to operate, the battery terminal voltage decreases by a large amount of current flow. Even if the battery voltage is normal before the engine starts, the starter cannot be rotated normally (more…)
Basic Automotive inspection
Engine System
• When fully depressing the accelerator pedal, whether the throttle valve fully opens or not
• Whether the amount of coolant and engine oil is good or not, whether the drive belt tension (more…)