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914World.com _ 914World Garage _ Rebuilding intake of a 2.0 D-Jet

Posted by: sofi2t81 Apr 7 2020, 06:40 AM

Hi there,

After having problems with the emission test all the years here in Germany (high CO) I started to fix the D-Jet with rebuilding the intake system to sort out the leaks.

While disassembling the thing I found some creative solutions from the PO.

The seal from the throttle to the plenum missed a piece but was „sealed“ with some gunk („Bärenscheisse“ you may have the right english word too).
Seal between runners to cylinder head had the same black paste in a crack.
Thermo switch wire was broken and drilled together with a little tape under the plenum.

I replaced most of the Vacuum hoses some years ago. Sadly not the crankcase vent.
The PCV valve was connected to the plenum but there was u T connection to the charcoal canister wich wasn’t easy to see. The PO then blocked the T side to the plenum with glue. So no crankcase vent...

Oil separator gasket was glued in as well

And finally three screws of the crankcase split were loose...with one nut missing

And some minor things...

What I did so far.
I cleaned all the parts, removed all the gaskets, glue and rust.
Painted everything.

Now the question. Should I reconnect the PCV or not? The valve operates when I apply some vacuum. How is idle stability with the PCV?

Thanks for help
Stay save, stay home, stay healthy

Peter

Posted by: Bleyseng Apr 7 2020, 07:41 AM

Hook up the PCV as it also relieves the crankcase pressure so the engine doesn't have pressure inside the case causing leaks. Doesn't affect the idle at all if all the hoses are good and no vacuum leaks.

Posted by: BeatNavy Apr 7 2020, 07:58 AM

QUOTE(Bleyseng @ Apr 7 2020, 09:41 AM)

Not sure what the "baeren" part of the word is, but I recognize the "sheisse" on the second half

(How do I get an umlaut on my keyboard....?)

Posted by: Bleyseng Apr 7 2020, 10:00 AM

ö like this? Hold the key down for a few seconds and select it

Posted by: GregAmy Apr 7 2020, 10:41 AM

@ "bear shit"...

Posted by: BeatNavy Apr 7 2020, 11:05 AM

QUOTE(GregAmy @ Apr 7 2020, 12:41 PM)

@ "bear shit"...

Wait, I thought that was supposed to only be in the woods

Ah, yes, I can now get umlaut, at least on my iPhone. Ö

Posted by: Bleyseng Apr 7 2020, 12:09 PM

Bear shit is what we always called that roof leak black stuff that if it got on your hands it was there for a week. Sticky, water resistant black paste.....

Posted by: sofi2t81 Apr 7 2020, 02:18 PM

Jupp, thats it. Exactly that.