Ok so I’ve been dealing with a blue smoke from exhaust issue for a while.

Some background:

no cats, pretty much straight piped.

So after I had adjusted IAC valve to spec, smoke kinda stopped—or was very little.

On my wedding day last month, the smoke was totally gone the whole drive (thank god), the next couple of days it was also totally fine.

then I decided to top off my oil to full in my car, and two days later, it started smoking again like a freight train.

For info I’m running 10W-30 castrol Dino oil. I was like a quart low before I topped up.

it only smokes in idle never when I’m accelerating or on decel.

so after that day of it smoking like a freight train I let it sit for a week, started it up again and tried to look out for if it’d smoke blue on startup and as soon as I turned it on, blue smoke came out of the exhaust albeit a lot less and eventually went away. Just turned car off after 1-2 min of idle tops.

So with that being said, engine O rings are going out no? Because if it smokes blue right on startup, that means oil was sitting in combustion chamber and got burnt on startup. Also the fact it only smokes on idle means the vacuum when driving prevents the oil from seeping through I’d imagine.

thoughts guys? Looks like I have to tear down? I know the blue smoke can only be bad turbo seals or bad engine o rings

attached is a pic of it smoking like a freight train. I know it looks white but trust me the smoke is blue



Also I have a tune with FCtweak by Xavier. Not sure if that’s worth mentioning

 

Sounds like a classic oil overfilling.

You should only fill to the middle of the hash marks.

There is a venting tube that runs from the top of the oil filler neck down tt the intake for the front turbo.

If you overfill the oil, oil will migrate and pool in the front turbo.

Then get sucked into your intake and may even migrate to your back turbo.

it will take a while to burn off.


Many cars will have that venting tube routed to an aftermarket catch can and the nipple at the intake sealed off.

 

Hey redbul!! Good seeing and talking to you again. I hope life has been sweet for you since.

so attached is where I filled up the oil. I originally filled it up to where I have the arrow and it lowered I guess bc it leaked while sitting? I think it only leaks from the oil pan at this point.



also what you said about the catch can setup. So the bottom nipple I have goes to the front turbo and I have the top nipple that originally has the pcv valve to the UIM open to atmosphere. Is that okay or causing issues? Should be fine no?

 

If you still have the downward facing nipple linked by a tube to the front turbo , I suppose overfilled oil may still flow down it, although some oil may also flow out the horizontal (PCV) nipple opening and spill on your engine.

Some people leave the opening open like you suggest, but the chance of liquids coming out is why people go the catch can route.

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I suppose in your case the nipple to the UIM i sealed off?

If you use a simple rubber cap to do that, watch out for it failing and causing a vacuum leak.

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Other than the oil migrating to the front turbo, I don't know what issues overfilling the oil can cause.

My local shop overfilled my oil last change and I did nothing about it as I have the catch can set up.

They were happy to tell me I was down to halfway up the hatch marks after about 2000 km of mountain highway cruising.

 

 

This is the closest you will get in all the FSM to demonstrate the oil filler neck venting tube arrangement. (Hint: the open ended tubes with no further explanation.) The rubber tubes at either end connect to a fixed-in-place metal tube that is conjoined with several other metal vacuum line tubes.

 

Hey redbul,

your attached image never sent

also how much should I fill the oil to? Only halfway and not up till the F “full” mark?

also I think you misunderstood, my current oil filler neck setup is the following

top nipple goes to atmosphere, simply left open

bottom Nipple goes to the front turbo to expunge excess oil

 

Make sure you have the correct dipstick so you know the oil is not overfilled and also check your crank case vent. @Redbul is correct on those things as he mentioned them above.

It could also be turbo oil seals, but if the oil is overfilled and the crank case isn't vented properly you'll have a hard time differentiating between the two problems.

Your intercooler probably has a few ounces of oil in it, so you'll want to pull it to inspect and drain as well. You can rinse it out with hot water to get out as much as possible and then put it back in.

 

I believe my dipstick is the OEM one with the yellow handle. What is the correct level? I have mine filled right to the top most line under the big F on the dipstick. It’s slightly below that now but is that where I’m supposed to fill it till?

I remember the few times I’d remove my intake elbow and the throttle body, I’d see a lot of oil on the throttle flaps. So maybe it’s not my o rings?

also if my oil filler neck setup is

top nipple vented to atmosphere
bottom nipple goes to front turbo

is that venting my crank case correctly? I don’t have the top nipple connected to the pcv valve that goes to the UIM so there’s no chance the crank case can be pressurized. The top nipple is simply left open to atmosphere