Hello!

 

i had to replace the brake booster because a failure, and i found oil inside it.

 

i replaced the vacuum pump to because i was told it was bad, and i decide to check the connection.

 

months ago i asked for help in this forum regarding those connection and a member showed me a diagram that help me  me a lot...

but i was told to replace the non-return valve to avoid oil going to the booster in case... 

but then i can not get the correct non-return valve because i dont know which one is the right one.

 

On the internet and spare stores there is a valve with two connections only, in a service manual i downloaded form this forum there is a two port valve, (check the picture, the circled in orange), but the diagram a member sent me here, the valve has three ports.

 

so, if the right one is the one from the service manual, where then should be connected the hose that come from the exhaust gas recirculation valve?

 

Remind me, is your steering wheel on the left or the right?

 

If it's on the left, your servo vac hose should be part number 6Q1 612 041DF, if it's on the right it should be 6Q2612041BS, I think.

Your engine has the PR-code T9V, I think. 

https://skoda.7zap.com/en/cz/fabia/fab/2002-225/6/611-611070/

 

1 hour ago, Kharl said:

i had to replace the brake booster because a failure, and i found oil inside it

 

Are you certain that it wasn't brake fluid? That would have a much easier way of entering. Maybe the real fault is master brake cylinder leakage?

1 minute ago, Breezy_Pete said:

 

Are you certain that it wasn't brake fluid? That would have a much easier way of entering. Maybe the real fault is master brake cylinder leakage?

It is oil.

If would be brake fluid, for that amount the reservoir would have been emptied.

 

But i will double.check the fluid i found in the old servo

51 minutes ago, Breezy_Pete said:

Remind me, is your steering wheel on the left or the right?

 

If it's on the left, your servo vac hose should be part number 6Q1 612 041DF, if it's on the right it should be 6Q2612041BS, I think.

Your engine has the PR-code T9V, I think. 

https://skoda.7zap.com/en/cz/fabia/fab/2002-225/6/611-611070/

 

Ok, i got this based on your research

 

And yes, thats the one currently installed.

 

Do you see the output with the green cap? That one has less impedance than the other, where should the hose from the exhaust recirculation be connected?

 

Definitely my one way is faulty, if i blow from the servo side it pass, and when i blow from the pump side it leaks a little but i pass some little air, the same if i blow from the smaller inputs and cover the pump side, it pass some air to the servo output.

 

But one i get a new non return valve, where should i connect the hose from the exhaust stuff.

I think I would expect to connect to the uncapped one. They may well be equivalent, hard to see in that photo. I guess one might be routed to each side of the valve?

Most likely both will be connected to the vacuum pump side, leaving only the servo on the protected side of the one-way valve.

24 minutes ago, Breezy_Pete said:

I think I would expect to connect to the uncapped one. They may well be equivalent, hard to see in that photo. I guess one might be routed to each side of the valve?

Most likely both will be connected to the vacuum pump side, leaving only the servo on the protected side of the one-way valve.

mmm.. could be, but the green cap one has less impedance.

There may be a restrictor/jet within one of the fittings, to make one narrower diameter.  

if there are no leaks in the system (EGR valve diaphragm?) then there should not really be any significant volume of air being moved, the diaphragm should make it a closed system, so high impedance to airflow may be no problem.

 

Edited 2 September, 20223 yr by Breezy_Pete

1 hour ago, Breezy_Pete said:

There may be a restrictor/jet within one of the fittings, to make one narrower diameter.  

if there are no leaks in the system (EGR valve diaphragm?) then there should not really be any significant volume of air being moved, the diaphragm should make it a closed system, so high impedance to airflow may be no problem.

 

The EGR looks good.