Hello,

I'm new here. I have a Fabia SDi 2003 and I am having some problems sourcing a rocker cover gasket.

I am in Thailand, so I can't just go to a parts shop and ask, as most of the shops and garages here haven't heard of Skoda. If it is not a Toyota pick-up, it might as well be a flying saucer, as far as they are concerned.

I had some oil coming from under the rocker cover and sealed it with silicone, which was ok for a while, but now the oil is back and i want to get it sorted properly.

I have been looking for an elastomer replacement and can find one for most engines, but not the ASY. I looked on 7zap and it says "no replacement part available."

Does anyone know if it is possible to replace this part ? Is it the same as the one for other engines ATD maybe ?? Or should I just use silicone again ?

 

Thanks in advance.

 

 

@richardwalker - Well, the 1.9 SDi and 1.9 TDi all use the same rocker cover, which is also in Audis, Seats and VWs.

8 minutes ago, KenONeill said:

@richardwalker - Well, the 1.9 SDi and 1.9 TDi all use the same rocker cover, which is also in Audis, Seats and VWs.

 

Are you sure this is true Ken?

They look completely different, and have a different part number. Here versus here.

 

53 minutes ago, KenONeill said:

@richardwalker - Well, the 1.9 SDi and 1.9 TDi all use the same rocker cover, which is also in Audis, Seats and VWs.

Thanks for your responses.

This is the problem I am having - Many of the parts sites, Eurocarparts, Bestpartstore, ACE etc ... seem to show the gasket for the ATD (and / or others) when I search but the cover is a completely different shape. 

All very confusing 

This page appears to imply that the 'gasket' is captive to the cover - perhaps a pre-applied, set bead of silicone - and that the whole cover should be replaced if the seal fails? 

Have you investigated whether there may be any problems with the breather system that may be tending to pressurise the crankcase and valve cover unduly? Generally there should be a slight negative pressure inside, making oil leakage unlikely.

 

 

Thanks, I have replaced the pressure regulating valve and associated tubes already. 

The workshop link you sent was very useful, thanks. 

It seems the only fix is to replace the whole cover, but the only ones I can find online are second-hand, so no guarantee the seal will be 100%

Do you know if using silicone again should suffice, maybe if I get a new set of bolts ? Or would you advise getting a second-hand cover ?

Thanks again for taking the time.

You could try using sikaflex if you can't get a new rocker cover.

Thanks guys, I think i'll just get a new set of bolts and use some Sikaflex. 

Update on this one ....

Finally fixed the problem properly. 

The gasket isn't available separately for the ASY engine, only as part of the complete valve cover, as Wino said.

So, I just changed the whole thing.

 

OEM - 038103469E

 

Thanks again for the help.

 After replacing the cover (with the integrated gasket) the leak is back. It is coming from this area.

I have already changed the breather tube and pressure regulating valve. 

Any ideas what I should do next ??

Thanks.

 

Edited 2 November, 20187 yr by richardwalker

I have blanked off the EGR. Does this put pressure back into the crankcase?

Thank you

 

No, the only source of crankcase pressure is gases which get past the piston rings during combustion.

Either your 'blow-by' is not being dealt with by the breather system be cause of a blockage, or it is excessive and overwhelming that system.

 

I see above that you have replaced the pressure regulating valve and associated tubes, but have you checked that where those tubes go to there are no blockages.

I don't have a mental picture of the arrangement on an ASY engine, can you put up a photo?

Edited 3 November, 20187 yr by Wino

Thanks Wino, your always a great help.  I'll put a photo up when I finish work.

Actually, is there a vacuum pump for the brake servo on the end of the head (right side of your pic above)? That might (?) exhaust into the camcover adding to pressure, so check for leaks in the brake servo hose which might be creating an increased volume of this.

Edited 3 November, 20187 yr by Wino

It has this vacuum pump on the end of the head.

https://skoda.7zap.com/en/cz/fabia/fab/2003-225/1/145-145000/

Should I inspect the hoses off this ?  How would I do this ?

 

 

Edited 3 November, 20187 yr by richardwalker

Is there just one hose, going to the brake servo? Looks like it from that link.

In which case, with engine running see if that hose is hissing/sucking/leaking atmospheric air into itself at any connections along it's path. A source of smoke may help to spot such leakage as it will be pulled visibly towards leak points.

 

As soon as I finish work, I'll check it and update.

Thanks for taking the time Wino, have a good weekend.

 

I had a look at the hose coming from the vacuum pump, it has another hose feeding into it. From here ....

This hose has perished and is no longer connected to the hose feeding the  vacuum pump.

 

 

From what you said the other day - I am presuming this is the source of the over-pressurization in the crank case. I'll get it fixed ASAP and hopefully the cover will stop leaking. Thanks again. 

*  EDIT - MISTAKE - The broken hose actually comes from the air box, then to the pressure converter, before going into brake servo hose. It is broken between the airbox and pressure converter.

 

Hmm, what - if anything - does it go to at the airbox? If it's just a source of filtered air, I can't see that leak/brokenness being the cause of anything amiss.  If it's going to some sort of vacuum motor/diaphragm (i.e. a dead end) at the airbox then maybe.

I can't check where on the airbox it goes into, because the car is at the garage, getting the hose fixed. (best to get it done anyway)

Hopefully it'll stop the leak, if not it's back to the drawing board :(

I'll keep you updated - Thanks again

 

Looking at this page https://skoda.7zap.com/en/cz/fabia/fab/2002-225/1/129-129025/ there may be some sort of vacuum-powered blend flap in the lower half of the airbox, proportioning input from the two (prewarmed and cold) air feeds (24 and 14)? See if the vac line goes in somewhere around item 23, when you can. (And investigate inside at your leisure to see what is really there. :))

Thanks, 

I'll check it when I pick the car up.

If the hose does go into the lower half of the airbox, could a break in it cause the problem with the valve cover?

Just now, richardwalker said:

If the hose does go into the lower half of the airbox, could a break in it cause the problem with the valve cover?

Possibly, yes.

Thanks, 

I appreciate all your help It is difficult here as, I don't speak great Thai and I don't know much about cars.

The information you're given me is very useful.