Jeep Cherokee (XJ): 4.0L engine

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Engine DESCRIPTION The 4.0 Liter (242 CID) six-cylinder engine is an In-line, lightweight, overhead valve engine. This engine is designed for unleaded fuel. The engine cylinder head has dual que ...

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Diagnosis and testing
Engine diagnosis-introduction Engine diagnosis is helpful in determining the causes of malfunctions not detected and remedied by routine maintenance. These malfunctions may be classified as either performance (e.g., engine idles rough and stalls) or mechanical (e.g., a strange noise). Refe ...