Hi Guys, found a nice oily mess on the lower engine cover today.... and when removing it discovered that theres a fair bit collecting around the pipes underneath....

had the plate thing they are attached to off, best I could to clean, but can anyone tell me what the pipes are / do and if they are part of the same system as the " Y " pipe is.....

Thinking about investing in a catch can as on last service found alot of cruddy mess.... and am tired of finding corroded and mucky pipes.

Thanks in advance

Rob.

Most of the oily mess was underneath this plate .... but I couldn't get proper access to see if any pipes were split.......

The little rubber pipes under this plate seem to be where the problem is? Not sure what they are tho. .... oil, Fuel , breather etc etc

cleaned it up best I could .... any ideas what the pipes are / do??

Edited 30 September, 201213 yr by REH17

There are breather and vacuum pipes under there. Some of all are probably split. Skoda term it as a suction jet pump, about £60.

Under there is the breather pipes that connect to breather box and under inlet manifold and then come out and connect to the Y pipe,

They have prob seen better days by now, creation motorsport on ebay do silicon replacements

thanks for speedy replies guys ..... would fitting a catch can mean I can do without these bit or does it only replace the Y pipe at the top etc...

I changed the Y pipe the other week as the hole in it had got HUGE and was oil everywhere..

any part numbers available for the skoda replacement and a link for the uprated ones?

Contact gee@w8performance he'll sort you out m8, got mine from him

Sent from my Galaxy S2 not a Crapple!

ok, so on the shopping list:

Catch can and pipes etc....(have seen guide on here somewhere which lists parts) - this replaces Y pipes at top breather stuff?

A set of hoses that are currently leaking (as per this post)-

Anything else anyone would recommend doing whilst Im at it?

Rob

Here's a useful diagram, should help you to see what everything is:

Thanks for the diagram .....

.... so its the yellow and dark blue pipes I need to replace, or is it the light blue ones .... I've already done the Y pipe, just don't want anything to fail massively or catch fire as I have a long drive to scotland in a few weeks . . .

Rob.

its the pink stuff that you need to check as well as it is under boost and vac, the suction jet pump mentioned is the blob in the middle of the pink. good practice to put extra (metal) check valves in on some of the lines too to stop boost loss

Blimey . . . Anyone near to worcester that can come and have a look at things?? Been reading a few posts on here, am thinking getting a lower breather pipe and the other one people change . . pipes 2 and 4

Ive done the Y pipe with a skoda part as I needed one (gassing out passengers due to other one destroyed)

Can someone tell me: If I replace these pipes 2 and 4, will a catch can mean they are redundant? Hopefully someone close-ish to me and help me one day soon?

Am keen to get the car fixed as the split pipes are annoyin me now...

Anyone local who has done this repair fancy an afternoon helping out?

8 is the large one way valve that gets sludged up so when you replace 2 and 4 make sure you replace or clean it (i cleaned that one but I also cut 4 and put in one of the extra check valves as discussed) makes a difference. the other bit that breaks is 10 which looks like its the suction jet pump, it is a pig to change but if yours is leaking then you can easily lose 5 psi from it.

hm . . all sounds confusing . . .

anyone on here fancy helping out??

Where are you located? as there are lots of spanner happy folks on here that will offer to help for beer tokens

the hardest part is the access. you need to remove the metal plate that all the pipes are attached to as well as removing the dipstick tube(do that first and possibly best to have a new one on hand as they snap real easy - not that expensive either)) and also the SAI line. This helps make a hole that you can work in.

When I did mine, it was in two stages. first removed 1,11,2,5,8 and 4 which is all the crank breather stuff (the bits that need the catch can if you are going to do it) once off the car I cleaned the check valve and also fitted the extra one in 4. I used a silicone 4, 2 and 5 but the standard replacements are OK as well. Some of the cheap silicone ones dont last well as they are not oil resistant and the crap that comes out of the crank breather is horrid. Make sure you have a load of the correct jubilee clips before you start as a lot of them are the kind you have to break to remove.

when I replaced the suction jet pump i did not replace any lines just the pump but the access requirement is similar. again plenty of clips to hand as they have to be broken.

I just had a look and all my old posts with pics are gone (couple of server moves have occured since I did them)

Adding a catch can won't remove any hoses, it'll add a heap more and clutter the area even more. So I'd think twice about it.

You're best off just stripping out the old breather pipes, hoses and valves and replacing the lot with new stuff from Skoda. Everything light blue on the diagram Rob posted.

If the suction spray pump has a split casing, then remove it from the car and insert it into the bin. Plug the port on the bottom of the inlet manifold, then just leave the original single main line running to the brake servo.

That's what I did years ago and it's been faultless since.

You could also go the simplification method and not have to worry about the pipes again!

I was concerned with spikes in crank case pressure (when lifting off at high revs or engine braking) with that breather setup. So when I ran a catch can I also ran a vacuum line with one-way valve from the can outlet to the original inlet manifold port (replicating the original operation).

Loads of people that fit cans leave the vac line and valve in the original position, which causes the flow of gases through the catch can to reverse (incorrectly) when the manifold pressure is sufficiently low compared to the intake hose pressure. So watch out for that.

I tried all sorts of breather setups, but the simplest is standard. It's neater and it works.

I agree with binning the SAI system and Suction Pump though.