2000 VOLVO S80 HAS A LARGE VACUUM LEAK. HOW DO I DIAGNOSE EXACTLY WHICH HOSES NEED REPLACED. WHERE ARE THEY LOCATED?
In the past we have used starting fluid to find vacuum leaks. Start the engine, let it idle. Spray quick shots of starting fluid at your vacuum lines in isolated areas. When the starting fluid find the vacuum leak the engine will react to it... usually by going up in rpm. Depending on your engine computer, it may stall the engine. Either way you will find your vacuum leak. Get starting fluid or "ether" at Autozone or O'Reilly.
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