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1986 FWB 307
230 Posts
Discussion Starter #1
Hi All!

The ported vacuum regulator Valve on my car has a third port that has no hose connected to it (attached picture).
During cold start operation there is little or no noticeable suction, but once the engine has reached operating temp there definitely is suction, especially if you place your finger over it.

So should there be a rubber cap on this open port or a little filter cap??..just curious how your 307s are setup..


Ported Vacuum Regulator Valve.jpg
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