If a car shakes when it is idling, the cause is usually something happening with the engine, such as needing new spark plugs. The spark plugs provide an electrical arc that ignites the gasoline vapor in the vehicle to push the piston and provide power to move the car down the road. Even though the vehicle is just idling, it takes power to keep the engine running smoothly.Know More
A wire gauge allows checking the spark gap, when installing new spark plugs. Improperly gapped plugs are sometimes the reason behind the rough running vehicle. The operator's manual for the vehicle provides information on the gap to use.
Prestolite Wire recommends visually checking plug wires while the engine is running to look for any arcing. With the engine off, it is possible to check the condition of insulation, boots and to look for burn marks. All of these are potential causes of the rough idle.
A dirty air filter starves the engine of air. Filters are generally inexpensive and easily changed. Auto manufacturers include recommendations for the interval to change filters. However, operating the vehicle in dusty conditions reduces the time between changes.
With a dirty fuel filter, the vehicle does not receive enough fuel to operate smoothly. Other potential causes of fuel problems include a defective fuel pressure switch or a defective fuel pump.Learn more about Car Parts & Maintenance
Common causes of cars shaking over 45 mph can include misalignment of the wheels, bad wheel bearings and warped brake rotors. If your car is shaking at relatively low speeds, it's best to consult a mechanic .Full Answer >
A loose or slipping engine belt or a misaligned accessory drive pulley could cause a car to squeal upon acceleration. Engine belts and drive pulleys are used to power the water pump, air-conditioning compressor and the alternator of an automobile.Full Answer >
When an engine knocks, one of the likely causes is low-quality fuel. Fuel of low quality or a low octane rating results in many different problems in the engine. This fuel rating informs the consumer of the amount of compression gasoline is able to tolerate. According to HowStuffWorks, these problems are why high-performance engines require higher-octane fuel to prevent knocks.Full Answer >
To steam clean an automotive engine, first prepare the engine by allowing it to reach a proper temperature, then cover all sensitive components. Next, clean the engine using a degreaser and steam-cleaning equipment. Dry off the engine to finish the job.Full Answer >