ABF breather/vac pipes

Still making good progress with the ABF Jetta. Just a couple of quick questions...

Is there a diagram anywhere for how the vac pipes go? I'm assuming the vac pipe from the by the throttle body goes to the airbox (which I haven't got anyway), theres a place for a vac pipe off the front of the inlet manifold which I can't work out where it goes. Also the ECU vac pipe connection should go to where?

The other question I have is; because I don't have an airbox am I OK putting a breather filter on the end of the ISV? I have it pushed into the manifold with the right gromit.

Thanks as always

Nick

 

isv starts at the back of the throttle body (bulkhead side) and goes up to the nipple on the far side of the ECU.

There is also one that goes from the pcv inbetween the manifold tubes up and underneath tube 1 if you like.

And one goes from underneath the plastic PCV that bolts on the front of the engine to a nipple on the bottom of the inlet manifold

 

I've got the one that goes under the inlet manifold to the pressure regulator PCV.

Does the vac pipe from by the ISV go to a 'T' piece then which joins to the throttle body and the ECU?

Cheers for the help mate

 

where the blue arrow is pointing to the plastic cover, below that is a square plastic PCV that has a big breather pipe connect underneath - there is also a vac hose that goes from there next to the isv.

Be carefull when taking to old one off as the plastic nipple gets very brittle and snaps - vw wanted 60+ for a new one so I ended up bodging it back on

 

Best way to remove then is slice them along the nipple axis with a stanley and then just slide them off- Beats breaking them as RIP says; they do go brittle.

 

mine had one of those little tiny metal clips the same as the one on the top of throttle body that goes to the airbox. I didn't realise and just pulled very hard at a bit of an angle..... it came off ok, as did everything else!!!! Then when lizard bought a new abf for his ibiza I thought great I can stick a new one on.... then he snapped the whole thing in half!!

 

Off topic but...

OMFG I've never seen an engine soooo dirty... I need to sit down




I hope you're gonna clean that before it goes in the MK2?

 

your joking right?? i had just spent two hours with special micro fibre cotton whool buds detailing that bay [:^(]

 

^^ Slacker

Last off topic post; I promise.

 

Right, the area I've circled green I just have a black plastic square and nothing underneath it, so I need to get one of those. And that big long pipe goes all the way round to the throttle body?

Am I OK blanking off the pipe I circled red and putting a breather filter on it? I'm assuming this is the pipe which joins to the ISV

 

yes, it only connects the airbox to isv.... so as long as your filtering the air that goes into the isv then shouldn't be a problem

 

Just a circular recess where something should go?! I should be able to source one, and then I can put a breather filter on instead of the long pipe to the throttle body and use a bit of pipe and a bolt or something to block the pipe on the throttle body?

I suppose all these bits are just for recirculation anyway. Where's the best place to get breather filters?

 

This shows the PCV hose (blue) and a K&N breather off eBay...you need to trim your cover thingy as shown:



The other vac hose comes off the manifold near No1 plug lead/TPS and goes to the FPR:


Finally there is the vac hose from the back on the inlet manifold to the ECU (above the VW logo on the inlet, next to the TB):

 

im not one for detailing but that engine bay is a real beaut

 

Cheers for the help guys, the pics are proper useful. That is a very nice looking engine bay, makes me realise how ratty mine looks.

 

Is that a ABF airbox in the above pictures?

 

Could be from a seat ibiza/Crdoba abf mk3 golf one is a lot bigger.