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1997 993 Idle Stabilization Valve

Engine

Vehicle Information: Model: 993 Cab; Year: 1997; Body Type: Cabriolet; Total Mileage: 41K;

I have read the recommendations in cleaning the ISV, The suggestions talk about removing the ISV from the engine and clening it with cleaner. My Question.. Could the ISV be left in place and simply remove the front hose clamp, therefore gaining access and clean it with the ISV in place? What's the advantage in removing it before cleaning?

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