Question about 1997 Chevrolet Venture

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Vacumn hoses Anyone have a diagram of where the hose from the breather goes, and the vacumn hose for the recovery of fuel fumes?

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  • Lilflyers66 Jul 02, 2008

    My mechanic gave me a melted hose which i took to the dealer and replaced. My mechanic took ill and I cannot figure out where this tube goes. In looking for the end of this hose I found that the hose from the breather, which runs to the back of the engine is also not hooked to anything. I am getting a check engine light.


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If u mean a plastic tube the runs from the bellow on the throttle body to the rear cylinder head , just below the coil pack,,, metal tubes are the gas lines or the injector rails , and bottom of the EGR valve has to metel tube the runs the exhsust manifold,, your under hood decal should have your Vaccum diagram on it.. if thats the breather tube your engine should being running very rich= burning a lot of Gas!!!

Posted on Aug 13, 2008

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95 sl500 fuel tank holds a lot of pressure,idles rough when stopped at idle speed Where is the fuel tank breather hose?

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listen for vacumn leaks(hissing sound), look for the obvious...broken vacumn lines or hoses, also check for a defective one way vacumn valve on some pneumatic controlled door vent systems(these valves are inserted in a vacumn line one side being the ""in" port and the other side of it being the "out" flow port,typically if these dont work the vents will also devert your a/c or heat all different ways through your dash.
to check these valves, simply remove from the vacumn hose, and apply vacumn to one side,if vacumn flows through the valve, apply the same vacumn to the opposite side of the plastic valve, if vacumn flows through on the opposite side the valve is bad, it should only allow flow from one side not the other. These valves are small and are usually white or black plastic and look like the old vacumn dash pots used on the old carbureated engines only smaller with one small hose in and one small hose out.

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You may have a combination problem. Your system uses electrical/vacumn. The ducts are operated by vacumn being directed to different hoses by the electrical switch. If you can get to one of the hose with the engine running, pull one off of its ports and check for vacumn.

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