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looking for some mechanical advice to all the petrol heads out there. Need help

 
Generalpatton1
User ID: 34164875
United Kingdom
02/11/2013 01:15 PM
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looking for some mechanical advice to all the petrol heads out there. Need help
Freaking out with this Passat issue, any mechanics out there post see post. you can respond here or the main page. any hekp at all welcome

[link to www.passatworld.com]
Anonymous Coward
User ID: 34164265
United States
02/11/2013 01:23 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
havent looked at one in years; guessing brake booster diaphram?
Generalpatton1 (OP)
User ID: 34164875
United Kingdom
02/11/2013 01:27 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
yea i was thinking the master cylinder. not sure though if that would cause all four wheels to seize up. Which was the problem in the first place before the brakes where changed. Thanks for the response
Anonymous Coward
User ID: 33972399
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02/11/2013 01:28 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
I don't see how it could be anything but the master cylinder.

Just has to be.
Anonymous Coward
User ID: 31451023
United States
02/11/2013 01:29 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
I would say your master cylinder is malfunctioning.
Anonymous Coward
User ID: 33972399
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02/11/2013 01:31 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
havent looked at one in years; guessing brake booster diaphram?
 Quoting: Anonymous Coward 34164265


I'm fairly sure it isn't the booster as brakes will still work (not as well though) even if the diaphram is busted.

There is a hose running to the booster. Run the car for a few minutes. Then remove the hose. If a sucking sound is very noticable then the booster is good.
Generalpatton1 (OP)
User ID: 34164875
United Kingdom
02/11/2013 01:34 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
thanks guys.,Is getting the booster ( master cylinder ) an expensive thing to get changed, is this something you can do yourself. ?
Anonymous Coward
User ID: 29781798
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02/11/2013 01:35 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
Maybe you need a brake flush? I lost my brakes a few weeks back while going downhill @ 45mph in a 2001 Grand Am GT and needed new brake lines because they had rusted out and they also did a complete brake flush as well.
Anonymous Coward
User ID: 31451023
United States
02/11/2013 01:39 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
thanks guys.,Is getting the booster ( master cylinder ) an expensive thing to get changed, is this something you can do yourself. ?
 Quoting: Generalpatton1 34164875


If you have never done one before have a garage do it, after all it is your brake system and if something goes wrong (your brakes fail) the garage will get sued and not you.
Anonymous Coward
User ID: 20574169
United States
02/11/2013 01:39 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
Freaking out with this Passat issue, any mechanics out there post see post. you can respond here or the main page. any hekp at all welcome

[link to www.passatworld.com]
 Quoting: Generalpatton1 34164875


There is a plastic tube running from the vacuum pump to the brake booster that typically cracks. Brake boosters rarely fail, but if they do. it means the brake fluid has been neglected and never changed. Diesels do not make their own vacuum, so there is a pump on the end of the camshaft.
Generalpatton1 (OP)
User ID: 34164875
United Kingdom
02/11/2013 01:40 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
I really dont want to change the booster if its not needed, I was also thinking would an air lock cause all the brakes to sieze. Front and back. Matbe a flush first to see if that makes any difference, ive been doing the pump bleed with another person for ages and nothing come through, surley the fluid would come through eventually
Anonymous Coward
User ID: 20574169
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02/11/2013 01:44 PM
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Re: looking for some mechanical advice to all the petrol heads out there. Need help
I really dont want to change the booster if its not needed, I was also thinking would an air lock cause all the brakes to sieze. Front and back. Matbe a flush first to see if that makes any difference, ive been doing the pump bleed with another person for ages and nothing come through, surley the fluid would come through eventually
 Quoting: Generalpatton1 34164875


Fill it full of new fluid, open bleeders, put stick between brake pedal and seat, wait. Old fluid colects water and water wont compress as easily as fluid. Its hard on the booster and pump because they are working harder to compress water in the lines.

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