Automotive Repair

Auto Engine Problems

Often car drivers face problems with the engine of the car. This could be for many reasons like speed, diesel, etc.

Engine Problems

Here are the types of problems that are found in car engines:

  • Backfire: This problem usually occurs in an internal combustion engine. This problem involves an explosion occurring in the exhaust system inside the combustion chamber. A visible flame is seen for few moments coming out of the exhaust pipe. This causes a popping sound and results in loss of power and forward motion. Some of the causes of such a problem are unregulated engine timing. It can also be caused due to improper wiring in the ignition of the car. This phenomenon also occurs when there is low fuel pressure or weak fuel pumps.
  • Crankcase dilution: Due to the accumulation of the unburned gasoline in the crankcase, a rich fuel mixture, allows a small amount of gasoline to pass down the pistons and the cylinder walls that dilute the engine oil. A mixture of fuel and air enters the engine, causing the condensation of the fuel on the cooler parts of the cylinder. This may result in washing away the oil from the cylinder walls and collect into the oil pans. Hence, increasing wear and also diluting the oil.
  • Diesel engine runaway: This is a term used to describe the condition in a diesel run engine, where the engine goes out of control, inturn consuming all its oil and running at higher rotations per minute. This results in speeding to the point where it destroys itself because of mechanical failure or stopping of the engine due to lack of oil.
  • Flooded engine: When excessively rich air fuel mixture is fed into the internal combustion engine, the fuel cannot be ignited. This is due to the mixture exceeding the exploding limit for that respective fuel. Until this rich air-fuel is cleared, the engine will not start. This could also happen with an engine in a running state to stop because of this reason. Flooding happens mostly because of the engine cooling down or because of the accelerator being pumped. On the contrary, this could also occur due to high temperatures which cause the carburetor float chamber to evaporate into the inlet manifold. Thus causing the air fuel mixture to exceed the explosion limit.
  • Hydrolock: it is also called as hydraulic lock or hydrostatic lock. It is a condition of the internal combustion engine wherein an incompressible liquid (water) is introduced into the cylinders and this causes the immobilization or damage of the cylinders. This happens because an internal combustion engine compresses gas in order to work, but most liquids do not compress. Thus if a liquid is introduced at a volume the pistons cannot work at, the pistons are unable to complete their travel. That is why the engine stops rotating or ends in mechanical failure. This condition happens in floods.
  • Engine knocking: This occurs when combustion of the air/fuel mixture in the cylinder starts normally in response to the ignition but more than one pockets of air fuel mixture explode in the combustion front. The fuel air charge is meant to be ignited by only the spark plug, at the exact time in the cycle of the piston.





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