'03 3.0 Lumpy Idle & Sucking Noise (CCV Been Replaced) HELP!

[parky]

Sounds like your problem then, there should be a vacuum withing the engine that you can feel whilst opening the filler cap-you mention new pipes, what about the valve itself?

There was a valve in the kit. Its a black thing with 3 pipe connectors on it? Is that the valve?

 

[parky]

I bought genuine bmw parts although they looked just like this

 

[Smartbear]

That's the one, you should have a vacuum inside your engine though, if it's not there you will get running issues

 

[parky]

Ok. Im at the car now. Iv had it running and there IS vacume when i remove the oil cap. If i attemp to put the oil cap back on you can feel a slight vacume pulling it on if.that makes sense.

What i have noticed is the engine not revving freely or hesitant dissapesrs whwn the cap is removed. ..so in theory if i drove it with no oil cap on it would be much better

 

[parky]

Just to add..The vacume pulling the cap back on is only very slight.. iv stripped all the inlet off today again and double checked everything. Put it all back together and had a smoke test done and theres no leaks at all.

The fuel pressure check was 2.5 bar and the needle was flickering as in unsteady, could this be a fuel filter problem or injector fault etc?

 

[GengisKaan]

Reviving this, if anyone of you guys still exist...

Anyone get anywhere with this?