1.Importance of checking pressure
Checking the refrigerant pressure while the air conditioning is functioning allows you to assume the trouble area or the cause. Therefore, it is important to confirm Read more Diagnosis of Malfunction in Automotive Refrigeration Cycle
Diagnosis
How to Diagnose your Vehicle if The Brakes is not working properly?
Poor braking effectiveness indicates not only the case where the brake does not operate at all even when the brake pedal is depressed, but also the case where the brake effectiveness is weak against the Read more How to Diagnose your Vehicle if The Brakes is not working properly?
How to Diagnose your Vehicle if The Break Squeaks?
What is brake squeaking?
Brake squeaking is a vibrated symptom caused by the friction between the pads and rotor. This vibration is transmitted as a sound. This symptom is referred to as “self-excited Read more How to Diagnose your Vehicle if The Break Squeaks?
Automotive Troubleshooting Oil Loss Via the Piston Ring
Automotive Troubleshooting Oil Loss Via the Piston Ring/the Valve Guides Inspection
Purpose of inspection
When burning oil causes white smoke to be seen in the exhaust gas, changing the engine rpm Read more Automotive Troubleshooting Oil Loss Via the Piston Ring
Automotive Troubleshooting Air Fuel Ratio (A/F) Inspection
Purpose of inspection
To determine whether the malfunction is a rich or a lean air fuel mixture.
Criteria
Using an intelligent tester, check the voltage of the O2 sensor or short term fuel
trim.
The Read more Automotive Troubleshooting Air Fuel Ratio (A/F) Inspection
Automotive Troubleshooting Cylinder Power Balance Inspection
Purpose of inspection
By confi rming the change in the engine speed when the combustion of each cylinder is stopped in turn for power balance inspection, judge whether or not the malfunction affects Read more Automotive Troubleshooting Cylinder Power Balance Inspection
Automotive Troubleshooting Compression System Inspection
Inspection method
Using a compression gauge, measure the compression pressure.
Criteria
The standard value differs depending on the engine model, therefore refer to the Repair Manual.
When compression Read more Automotive Troubleshooting Compression System Inspection
Automotive Troubleshooting Fuel System Inspection
Inspection method (gasoline engines)
Inspect the following when cranking the engine.
(1) Pinch the engine compartment fuel hose with your fi ngers and check whether or
not fuel pressure is applied.
(2) Read more Automotive Troubleshooting Fuel System Inspection
Automotive Troubleshooting Ignition and Glow System Inspection
Automotive Troubleshooting Ignition and Glow System Inspection
Inspection method (gasoline engine)
Remove the spark plug and crank the engine to check for a spark at the tip of the plug and the spark’s Read more Automotive Troubleshooting Ignition and Glow System Inspection
Automotive Troubleshooting Engine Starting Condition Inspection
Purpose of inspection
The cause of malfunctions related to engine starting differs depending on whether the initial combustion occurs or not, or whether starting takes too much time or not. Therefore, Read more Automotive Troubleshooting Engine Starting Condition Inspection