Vacuum system problem
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AudiWorld Newcomer
Joined: Sep 2014
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Vacuum system problem
Hey guys got a quick question, I've had trouble with vacuum leaks ever since I bought this car a few months ago. Narrowed it down to the PCV valve below the intake manifold, replaced it and seems like I gained some power and the idle smoothed out a bit. I also replaced all 6 check valves with the cheapo ones @ usplastics and replaced the Suction jet pump and hoses around it.
With the new suction jet pump, I am hearing a decently loud hissing sound coming from it. If I pinch the L shaped line coming from the manifold the hiss stops, if I pinch the hose attached to the bottom of the suction jet pump, it also stops.
So I went and bought another one brand new OEM from the dealer locally and put it in... same hissing sound!!
Is this hissing that I am hearing normal for the suction jet pump?
Just so you have an idea of the part I am talking about here is a picture:
With the new suction jet pump, I am hearing a decently loud hissing sound coming from it. If I pinch the L shaped line coming from the manifold the hiss stops, if I pinch the hose attached to the bottom of the suction jet pump, it also stops.
So I went and bought another one brand new OEM from the dealer locally and put it in... same hissing sound!!
Is this hissing that I am hearing normal for the suction jet pump?
Just so you have an idea of the part I am talking about here is a picture:
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