ASE T1 Gasoline Engines (Medium Heavy Truck) Practice Questions - ASE T1 - Gasoline Engines (Medium Heavy Truck) Certification Exam

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A gasoline-powered medium truck has white smoke from the exhaust, coolant loss with no external leaks, and a sweet smell. The MOST likely cause is:

Worn valve guide seals An overfilled crankcase A restricted PCV valve A leaking head gasket or cracked cylinder head allowing coolant into the combustion chamber

Correct Answer:

A leaking head gasket or cracked cylinder head allowing coolant into the combustion chamber

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