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Thursday 11 November 2010

Passat B5 Exhaust System

The Passat B5 exhaust system is made up of three main parts so unless the whole system needs changing it shouldn't be a big expense when a section starts to blow and needs replacing.  Have a look at the information below and the exhaust diagram.  I have included several links for information purposes but the first place you should go is to a local exhaust fitter for a quote.



Starting from the engine end check the exhaust manifold and cylinder head for any leaks of exhaust gas.  The gaskets between the parts can and will wear over time from the constant expansion and contraction of the heat from the system.

With the engine running listen for any hissing or popping sounds as you can often identify the location of the leak this way.  Look for any discolouration or burns from the heat near the exhaust ports on the cylinder head.

Inspect the area that connects the head pipe and exhaust manifold as the movement from the engine caused by drive torque can lead to movement at the joint where these meet.  Look out for any indicators of discolouration from any escaped exhaust gases.

Look along the exhaust pipe system from under the car as you may be able to identify any damage or corrosion.  Place the palm of your hand over the tailpipe with the engine running and listen for any changes in the engine sound.  The suffocation should force the engine to drop in revs and change the sound, if there is no difference with your palm covering the exit pipe then there is clearly a hole or break somewhere in the exhaust.

If you still cannot find the cause of the fault then speak to a mechanic or local exhaust fitter and ask them to read your engine intake manifold vacuum as low readings will indicate a blockage.  But don't get caught out with a big repair bill as the components of the exhaust system are not very expensive.  Check the system reference below.





  
System reference 930691

321338..........CAT. EuroCar + FR Pipe.....£119.47 + vat
380213..........CAT. MetalCat + FR Pipe....£63.83 + vat
401659..........CAT. Fix Kit..........................£2.26 + vat
SYA10..........Clamps.................................£0.91 + vat
SYA23..........Clamps.................................£0.74 + vat
VAG4............Gaskets................................£1.48 + vat
VAR34..........Rubber Mounting..................£1.48 + vat
VAR36..........Rubber Mounting..................£2.09 + vat
VW465C.......Box + Tail Pipe....................£54.84 + vat
VW466B.......Box + Centre Pipe...............£120.06 + vat


Have a look at my hubpage for my experience with my Passat exhaust problem - 




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4 comments:

  1. Wow its really interesting...
    How awesome! I never thought of doing something like this, though I have HATED the mess that always exists in Exhaust systems Great post!

    Exhaust Systems

    ReplyDelete
  2. Hi, thanks for your comments. Its always nice to know that I'm helping others.

    ReplyDelete
  3. Blogging is the new poetry. I find it wonderful and amazing in many ways.

    ReplyDelete
  4. Blogging is the new poetry. I find it wonderful and amazing in many ways.

    ReplyDelete