1991 Chevrolet Caprice Q&A
1991 Chevrolet Caprice Question: coolant leaks out my 1991 caprice classic
coolant leaks out my 1991 caprice classic but its not the raditor nor the raditor hoes - Visitor
Check heater hoses and the cylinder heads themselves. How about the heater core? Is the carpet wet? Can you see the weephole on the firewall? - Hal...
The way an automotive shop would locate the leak is by removing the radiator cap and attaching an adapter that screws on in place of the radiator cap. Something that looks like a bicycle pump with a pressure gauge attached to it is used to "pump up" pressure to simulate pressure generated when the cooling system is at operating temperature, the leak is then found sometimes it is obviously leaking from a coolant hose or cracked housing, failed gasket or water pump, sometimes the engines cooling system needs to be inspected from below or inspected using a mirror and flash light. If the coolant loss is still evasive dye can be added to the cooling system that may indicate the source of the leak. A mysterious coolant loss may even be a sign of a head gasket that is not sealing well. - patrick mannion