[DG330]

Nadir - The first set of results is the first crank psi and second is at 8 cranks. Some variance on the first crank, but at 8 cranks about 5%. I might run another test when I've got the intake off again but crank it for 12+ to get max compression result.

Rob - I've actually got the o rings for the turbo return pipe, so will give the check. The garage said I had a slight leak on the return pipe, so I assumed they would have checked for blockages when refitting.

The strange thing I always notice with my car is with fresh oil the symptoms are far worse, they got better for a while last year from a car of stop smoke by Wynn's. However, the dose level was not right. Needed another .5 of a can. Would a thicker oil cause less crank pressure or more?

[DG330]

One thing I've noticed since changing my egr pressure sensor is low down revs is pretty poor. It feels like turbo lag. Just a sudden surge of power at 1800 to 3/4K

Previous owner probably mapped it with the sensor broken

[DG330]

Anyone know if these elbows will be ok?

I've had a plate made that will sit over the crank case breather section and will have two horsetail elbows. One off the crank pressure oil mist outlet and one going back to the intake.

External is 25mm and internal is 20/21mm then runs on a 25mm internal to provent separator and back to the intake.

The pipe the runs to the intake pipe is about 20mm so thought it would be fine. Aim is to have a clean intake and reduce crank pressure. Hopefully stop my oil burning smoke (hopefully)

I'll run a catch can for the oil drain with the intention to back to the sump through the dipstick using a metal T piece and non return valve. If this is the source of my headache!

[Nadir Point]

With a little luck, the pre-cooler (if I'm reading your intent correctly) might keep some of the oil in the engine, before it even gets to the Provent.

[DG330]

Originally Posted by Nadir Point

With a little luck, the pre-cooler (if I'm reading your intent correctly) might keep some of the oil in the engine, before it even gets to the Provent.

What do you mean? You think it will suck it through?

[Nadir Point]

I guess maybe I don't understand the big round metal thing.

[DG330]

Originally Posted by Nadir Point

I guess maybe I don't understand the big round metal thing.

What the provent? Provent has a built in oil separator and is rated to 250kw

The metal things are just elbows which will be welded on a metal plate. The round thing is just 25mm pipe to take the vapor to and from the separator.

Will have to see how it goes.

[Nadir Point]

Ooooooohhhh, NOW I see/get it! That's always been one of my big foibles - thinking so far out of the box I lose the box. But I like the metal tubing idea.

Various types/grades of synthetic and natural rubber-type materials are great in many applications, but it doesn't last like aluminum/steel/metal in the automotive environment.

I was thinking if you installed a cooler/separator device right on top where the CCV exits, most of your oil would drain right back to the engine. That is the intent of the OEM designs I'm seeing, just poorly implemented in most cases due to size/space manufacturing constraints.. Something the size of that tubing coil might do the trick.

The key to a well-functioning catch can is keeping it cool - mounting away from, or insulating from engine heat, near the front where airflow will keep it cool, enabling the condensate process to occur.

The big question for you will be if ANY catch can is good enough to compensate for your loss rate.

[DG330]

Originally Posted by Nadir Point

Ooooooohhhh, NOW I see/get it! That's always been one of my big foibles - thinking so far out of the box I lose the box. But I like the metal tubing idea.

Various types/grades of synthetic and natural rubber-type materials are great in many applications, but it doesn't last like aluminum/steel/metal in the automotive environment.

I was thinking if you installed a cooler/separator device right on top where the CCV exits, most of your oil would drain right back to the engine. That is the intent of the OEM designs I'm seeing, just poorly implemented in most cases due to size/space manufacturing constraints.. Something the size of that tubing coil might do the trick.

The key to a well-functioning catch can is keeping it cool - mounting away from, or insulating from engine heat, near the front where airflow will keep it cool, enabling the condensate process to occur.

The big question for you will be if ANY catch can is good enough to compensate for your loss rate.

Well I'm hoping thats my problem, but I checked the intake pipe into the egr and there was some oil, but not loads. Will have to see if it helps.

The mounting of the provent will be by the aircon refill (above the external coolant heater). So a good 1M of piping each way.

A guy on YouTube had similar issues with his and he installed a provent on the 335d with success, so hoping this might help.

There was no smoke this morning after a short drive, just the usual black on wot. Did come back eventually though. Will get some pics during the install.

[Nadir Point]

Try to avoid any low spots in the line routing that might freeze with accumulated water condensate. If your dipstick disappears some cold morning, that's probably what happened.

[DG330]

To update this, the plate has been made, but mistake on my instructions means it needs to be adjusted. As below pic, but going to make some changes to it this weekend to trial the provent then will get some new elbows welded on

Although, I know have another issue, my valve cover gasket is leaking!!! Used a Febi brand one (which I thought was good), but it's leaking from where you put a tiny bit of silicone sealant (as recommended on the Bmw guide). The corner of the front left, by the vacuum pump. Anyone got advice for this? I'm fitting a replacement this or next weekend.

Did you put gasket sealant on those two locations when fitting?

[DG330]

Provent is in. Will update to see if this helps with the smoking..... put a good 70 miles on it already, but might need 1000.

[DG330]

Ordered a new injector for my cylinder 6 as it always shows high values of 1.2-1.5 at idle and a guy with a m47 320d had exactly the same issues (idle smoke and lots of blue grey smoke when revved, also one injector showing at 1.3 on idle) as me and it turned out to be a faulty injector. So on a whim of hope I've ordered a recon.

Question for you guys - how do you code it in using inpa or dis?

[Tambohamilton]

You faff and fiddle and click on things and go back and forward and faff some more, and eventually you find the right menu for it in inpa. It'll be under some random menu, in a chassis code that isn't the same as your car marked as a 'test procedure' or some balls like that.... Honestly, I have no idea how they made the software so bewildering! I've done injector coding before, but without at least clicking through in the software I have not a clue what the steps were. Realistically it'd take me half an hour of swearing to find the correct menu again.

I'm not saying that to put you off...just make sure you've got some time to go about it with some patience.

[robnitro]

Not sure about inpa but ista-d and tool32 can code injectors.

[Tambohamilton]

and you've got to figure out which software does what, before you even start!

[robnitro]

You can run it without it coded. I did for a few days as I was using the wrong code yes there's 2 codes so be sure to write down the one by the square barcode thing.

[DG330]

Thanks Guys,

Managed to code it using INPA, was very quick.

Anyone know how to reset fuelling/air adaptions - is this possible in inpa?

[Hussain22]

Hello I own a bmw 335i n54 cat deleted and muffler deleted with about 100k miles with brand new turbos. My oil filter has been leaking for awhile which am not worried about but when my car is warmed up blue and white smoke comes out the exhaust twice a day for 3 seconds should. The car runs perfect no check engine light etc but should I be worried about this smoke.

[robnitro]

Wrong forum this is for m57 diesel engine.

[ddinse]

Originally Posted by DG330

Thanks Guys,

Managed to code it using INPA, was very quick.

Anyone know how to reset fuelling/air adaptions - is this possible in inpa?

Did the injector help with the light blue smoke issue?

[DG330]

Originally Posted by ddinse

Did the injector help with the light blue smoke issue?

Nope, but I couldn't reset adaptions. Couldn't find it in inpa. Same issue?