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1986 944 Testing Turbo Bypass Valve


Vehicle Information: Model(924/944): 944 Turbo; Year: 1986; Engine (type, size, modifications): 2.5; Total Mileage: 68000;

How can you check your bypass valve? I took it off and checked at the source of the vacuum and there doesn't seem to be any response in the valve. It doesn't keep vacuum either. Can you tell me how to check the valve properly?

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