4 Signs That Your Engine May Need Replacement
When your car is experiencing problems with its engine, it could be due to a number of reasons. Some of these reasons are more serious than others, but it can be difficult to determine without attention from a qualified mechanic. Therefore, it is always advisable to keep up with your car's maintenance and for this reason, you should check your engine regularly. Having an engine replaced can cost thousands of Rands, so it pays to take notice of the following signs that could indicate that your vehicle's engine needs replacement:
1) Increased Exhaust Smoke
One of the most common issues is an increase in exhaust smoke. The tailpipe may be emitting dark plumes continuously even after driving at normal speeds for short distances. This problem may also manifest by occasional increases in smoke emitted while idling or accelerating the car slowly. This symptom means that there is too much carbon monoxide in the exhaust gases. Most people think that this is due to a problem with the engine oil, but this isn't always the case. The excess smoke could be caused by many things including leaking valves, stuck piston rings or any number of other faults. As well as being an inconvenience, it means your car needs immediate attention from a mechanic especially if the smoke is accompanied by other symptoms such as knocking sounds or lack of power.
2) Knocking Noises
Another symptom to look out for are knocking noises while driving typically above 60km/h - 80km/h. These noises may appear to come from under the bonnet and could be accompanied with vibrations when accelerating slowly. Again it pays to get your car checked if you think this is happening as it could mean there is a serious problem with the engine. A knocking sound coming from the rear of the car means that a rod bearing might have failed and will need to be replaced. If it's coming from underneath the bonnet, then an issue with a piston or crankshaft has been detected.
3) Lack of Power
Driving your car for some time may result in a lack of power on steep hills or when trying to accelerate quickly. In some cases, people mistakenly think it's due to poor quality fuel but if you have recently put good quality petrol into the vehicle, then you should check whether there are any other problems with it instead. It's possible that your car needs new spark plugs or that there is a problem with the fuel injection system, but it might also mean that the engine has an internal issue.
4) Decrease in Gas Mileage
Another common symptom of worn-out engines is a decrease in gas mileage. The car may not be getting as many miles per gallon as it was when you first got it and even after regular maintenance, the amount of gas used by your vehicle remains unchanged. It is often due to failing pistons and cylinders which allows oil into the combustion chamber where it mixes with the petrol vapors and forms harmful deposits on them
Please note the above information acts as guide only and you should always check everything with a qualified mechanic.