The engine is the heart of the vehicle, generating force to turn the wheels by converting fuel into heat. It consists of several different parts that can be replaced if needed, although these might vary according to the type of engine. For example, the single overhead camshaft (SOHC) engine is comprised of valves, valve springs, tappets, pistons, cylinder head and block, and spark plugs, while the double overhead camshaft (DOHC) engine has valves, intake and exhaust camshafts, rocker arms, lifters, pistons, cylinder head and block, and spark plugs. Issues might occur with any of these parts.

The following are the most common of all engine issues: 1) Loss of power, misfiring or failure to start due to poor compression, 2) Coolant leakage, overheating and smoke coming from the exhaust caused by a cracked engine block, 3) Incessant rattling and tapping noises and/or metal shavings found in engine oil as a result of broken or worn-out pins, rods and bearings. These symptoms are not exclusive to the listed problems, so consult with your trusted automobile expert to get an accurate diagnosis.

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