1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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17,277 Posts
If you had the serpentine belt off and the noise was still there, it sounds like an internal engine noise. A whine is unusual for a chain-driven water pump as they usually growl or rattle. Any 'ck engine' light or vacuum leaks? It is possible for the timing chain itself or crankshaft-driven oil pump to whine.
If a chain guide has worn, the links could make a whine as they 'whizz' over the bare or broken spot on the guide. An oil pump sucking air or a restricted intake screen could make the oil pump whine.
The only real visual access would be to pull the upper intake manifold and a valve cover to look down inside for anything unusual like heavy sludge build-up or bits of metal. At that point you may have to decide if the rest of the car is worth a reman engine or engine rebuild.
If you have the tools, space and know-how to do the work yourself that would be a plus, but I'm getting a little ahead of myself here. Investigation, diagnosis and assessment always come first. A good service manual with 2.7L repair information would help for now.
If a chain guide has worn, the links could make a whine as they 'whizz' over the bare or broken spot on the guide. An oil pump sucking air or a restricted intake screen could make the oil pump whine.
The only real visual access would be to pull the upper intake manifold and a valve cover to look down inside for anything unusual like heavy sludge build-up or bits of metal. At that point you may have to decide if the rest of the car is worth a reman engine or engine rebuild.
If you have the tools, space and know-how to do the work yourself that would be a plus, but I'm getting a little ahead of myself here. Investigation, diagnosis and assessment always come first. A good service manual with 2.7L repair information would help for now.