Symptoms of Failure of Carburetor and How to Replace It

Get to know the carburetor
The carburetor was a key component in the older makes of cars. The main function of the carburetor are:

•  Makes fuel and air create a highly combustible mixture.
•  Regulates the ratio of air and fuel mixture.
•  Controls the engine's speed.

Where does carburetor located
The carburetor is located near the fuel tank and the engine. After the air-fuel mixture is created it sends to the intake manifold of engine. The air and fuel is sucked from the atmosphere and the fuel tank.

Symptoms of failure of carburetor

• Hard vehicle starting
• The carburetor plays a vital role in starting the engine of the vehicle.
• The vehicle ignition system is dependent upon sufficient amounts of air-fuel mixture passing into the combustion chambers.
•  If the carburetor is in bad condition, it limits the flow of either fuel or air into the engine.
• The vehicle will hesitate to start and the carburetor houses a choke mechanism that temporarily provides the air/fuel mixture to run the vehicle initially.
• If the carburetor choke mechanism is also not working properly, the engine doesn't start.

• Engine missing
• Another common symptom of a bad condition carburetor is an engine that runs unevenly
• An jerking of engine normally occurs as the result of awkward fuel supply into the engine and results in incomplete engine combustion and inefficient engine performance
• Sometimes, a bad condition carburetor reduces the flow of fuel into the engine and causes a engine mishap.
• An engine mishap can be caused at both idle speed and also under normal acceleration.

• Black exhaust smoke
• Another common symptom of bad condition of carburetor is, the carburetor will often emit black smoke from its exhaust.
•  Even through black smoke which in symptom of severe other cases can be quite enormous.
• This is due to a improper air/fuel mixture in the carburetor.
•  If air-fuel mixture is incorrect, many problems can occur, which includes poor engine performance, poor mileage, and also the emission of black exhaust smoke.

How to replace a carburetor

• First, make sure that the engine is in switched off state.
• Remove the hoses and fuel lines from the carburetor
• Remove the nuts that hold the carburetor to the intake manifold.
• Take the carburetor off.
• Now clean the surrounding area of the carburetor with the air blower or the vacuum cleaner.
• Scrape all dirt and gasket material around the carburetor. Make sure that the carburetor sucking air because of an imperfect seal.
• If air is leaking replace a new gasket. The gasket should have coating of gasket sealer on both sides.
• Fix the new carburetor, after fixing the new carburetor , tighten the carburetor onto the intake manifold by tightening the nuts.
• Connect all the fuel lines and remove all tools from the top of the engine.
• Fill the carburetor with small amount of air-fuel mixture and Start the engine.
• Check for any vacuum leaks and then check for gas leaks on fittings.
• Tighten them to prevent any leaks. If they continues to leak replace the gaskets.
• Reconnect the air cleaner on and close the hood.

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