Whats New on Free Car Diagnostic !

Car Stalling While Accelerating

Conditions when car trouble occurs 
The stalling occurs when the weather is cold and wet morning.

Possible cause of car trouble
There is moisture on the distributor cap that causes the engine to misfire.

Car problem troubleshooting
When the problem occurs on cold wet weather condition, usually this is because of the moisture on the distributor cap. The moisture forms inside the distributor cap when the car is parked overnight on a cold wet surroundings. The resulted moisture allows the electrical current to arc inside the distributor cap and causes misfiring of the engine and during acceleration arcing is become extreme which also cause the misfiring to become extreme enough to cause the engine stalling.

Removal and Replacement of Injection Pump

Removal of the injection pump 
1. The ignition switch must be turned OFF and the battery ground cable must be disconnected.

2. The no.1 cylinder must be set at TDC on its compression stroke and the fuel line around the pumps must drain OFF. Do not perform the work when the engine is hot.

3. Parts like the air duct, intake manifold collector, and other parts that obstruct during the work to be done must also be removed.

4. Check the alignment marked on the injection pump against the idle gear, this is a must procedure before removing the injection pump. When the alignment marks do not conform to the specification then this is a possibility that cause the injection pump malfunction.

5. Before removing the injection tubes, mark the tubes corresponding to cylinder number.

6. Cover the injection nozzle assembly and the delivery valve that is mounted on the distribution head to prevent the intrusion of dust on the system.

7. Disconnect the fuel cut solenoid valve connector then remove the accelerator wire. Next is to disconnect the overflow hose, fuel inlet hose and fuel return hose.

8. Remove the injection pump gear nut then loosen the injection pump gear and remove the pump bracket.

9. Remove the vacuum pump if pump drive gear is engaged with the injection pump gear. When removing the vacuum pump be careful not to bend the oil tube.

10. Now remove the fixing nuts and bolts and then remove the injection pump. The injection pump cannot be repaired therefore the parts must be replace.

Diagnose and Repair Car Air conditioning System

Principles of air cooling of AC system
The principle that is applied to the automotive air conditioning system is that when liquid turns into a vapor it will absorb heat so that the surrounding area cools down. It is similar to the principle that when a body is wet and the perspiration is exposed to the wind the body will feel cool.

Refrigerant flow
The illustration is shows basic structure of the air conditioning system of an automobile. The cycle is that the refrigerant changes state from liquid state to vapor state and back to the liquid state again. The liquid becomes gas when the refrigerant absorbed heat and the surrounding becomes cool, then the gas is compressed making the refrigerant temperature to rise, now as the gas cools down it will return to liquid state.

How to Diagnose Engine Overheating

Engine overheating happens when the balance of the cooling capability of the engine and the heat generated when the engine operates starts to deteriorate. When this balance is deteriorating it will extremely increase the coolant temperature that causes the coolant to boil.

The coolant will boiled into steam and spew out from the deteriorated portions like the reservoir or radiator. Continuously running the engine at this condition will damage the engine.

What to do when Engine Overheats?
1.If the car can be move, move it safely off the road and away from traffic, park the car.
2.Continue run the engine, do not stop the engine. Because when the engine is stop the water pump will also stop working and the flow of the coolant from the reservoir into the engine will also stop. The coolant will stop circulating around the engine but continues to receive heat coming from the engine and will continue to boil in that condition thus overheating will not be resolved.
3.Open the hood so that the air will help to cool down the engine.
4.After the temperature indicated on the temperature gauge goes down then stop the engine.
5.Request the car dealer for any assistance.