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Thread: 1.8T Vacuum Leaks

  1. VW/1.8T
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    1.8T Vacuum Leaks

    09-20-2010 08:49 PM #1
    Ok so i have a 2001 Jetta 1.8T. I did a vacuum test on it today and i had a bad leak. I checked the diverter valve and the fuel pressure regulator. I need ideas as to where to start looking for problems.
    Any input would be appreciated.
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  3. jawnsense
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    09-20-2010 08:55 PM #2
    you shouldve felt around for leaks when your engine was pressurized. feeling/hearing the leak is a piece of cake.
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  4. bprz09
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    09-20-2010 09:23 PM #3
    i just did this to mine, i took some water with soap in it and sprayed around where i thought it may be leaking. i had a crack in my PCV hose coming out of the block and the gasket under the cam tensor right next to the valve cover was bad but that's just me.
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  5. MaSeDoGG
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    09-20-2010 09:32 PM #4
    i've got an 02, but i just had to replace the crankcase breather hose due to vac leak... it was running realllllly bad.
    lower everything
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  6. pizzarrhea
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    09-20-2010 09:43 PM #5
    I had a similar problem when I got my 1.8t two months ago. My upper PCV hose was cracked. Check that out.
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  7. Opption
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    09-20-2010 09:45 PM #6
    carb cleaner on vac hoses = if rpm increase that's where you have a vac leak.
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