There are several different vehicle components that cause engines to shake, shudder or vibrate. CarsDirect.com lists worn or faulty spark plugs as the most common cause of engine vibration. Bad spark plugs cause an engine to misfire or not fire at all on some or all cylinders. This throws the engine out of balance, resulting in vibration.Know More
Loose or disconnected vacuum hoses, an improperly adjusted or poorly working fuel intake system and loose timing belts are a few of the more easily remedied causes of engine vibration. Solving vacuum issues is often as simple as replacing or reconnecting hoses, and loose timing belts are fixed through a timing belt change where the belt, idlers and tensioner are replaced to ensure a tight fit. CarsDirect.com recommends cleaning the fuel intake, throttle body or the carburetor, as well as readjusting components to manufacturer specifications to eliminate vibration caused by the fuel intake system.
Damaged or broken motor mounts are arguably the most serious cause of engine vibration. CarsDirect.com suggests that a driver shift between drive and neutral while the vehicle is sitting still. If the vibration lessens while in neutral, the motor mounts may have sustained damage. Changing old motor mounts requires lifting the engine to access the mounts, a repair with high labor costs.Learn more about Engine Oil
A gas odor in engine oil is caused by contamination of the engine oil by gas, usually due to a leaking fuel line or malfunctioning fuel injectors. However, it is normal for a small amount of gas to get into the engine oil during normal engine operation.Full Answer >
The best motor oil for most car engines depends on the relative age of the car. Synthetic motor oils, such as Amsoil Synthetic Blend 15W-40 Heavy Duty Motor Oil and Mobil 1 10W-30 Full Synthetic Motor Oil, are best for most cars, while older cars may require higher viscosity oils.Full Answer >
Dexos oil is the only type of oil that General Motors (GM) recommends owners use in their cars, as other brands, which contain different compositions, may cause damage and void warranties. GM, like several other car manufacturers, uses an exclusive oil that combines various properties of other car oils. This special blend works only for cars and trucks with the GM label; vehicle owners with cars using standard gasoline use Dexos1, while diesel-powered vehicles use Dexos2.Full Answer >
The owner's manual contains oil capacity information for Briggs & Stratton engines, and the company's website has an oil capacity chart that lists most engines. If the owner's manual can't be located or is damaged, replacement manuals can be downloaded, as well as the capacity chart, in Adobe PDF format.Full Answer >