Tyler [S5 FC]

So the first drift event of the season was yesterday. First time with my tie rods and other parts so I just had a fantastic time, only spun once, was doing really early initiations and holding decent angle throughout the day.

Then towards the end of the day I went out and had some fuel cut around the first corner, straightened out and tried to get more speed and more fuel cut, then pop! Huge backfire. So I pull into the pits and pop my hood. When I walk up I can see oil, coming out everywhere. (I'm like OHH ****! at this point) So after some very close inspections by like 4 rotorheads we figure the only place where it could've come out is the oil filler neck. We even checked the turbo piping and there was no oil there.

There is a place for a hose to apparently go to the turbo or oil catch can, but mine has nothing, so I'm assuming it just shot out of there and went everywhere (My oil level was a bit above full). Also my battery (ghetto tied down, won't do that again) slid into my power steering belt and cut all the way through my positive wire. So I fixed that, cleaned up all the oil out of the engine bay and then came the moment of truth.

I started her up and bam, turned over right away. Then after about 15 seconds of sitting in idle, smoke started coming out of the exhaust, and got dramatically worse the hotter the car got. So I drove it around the track for a minute to see if it would burn off. No dice. So I'm thinkin I blew a seal and need to do a rebuild.

I go to drive it home, where it smokes all the way to the interstate, and get on. I don't see any smoke at all after that (even my friend driving behind me said he saw none either). When I got off the interstate I was expecting lots of smoke... but none, zero smoke at all. The car seemed fine, got out of the downtown area and thought I'd try and boost. Boosted fine, no smoke. So I think my car is okay now. But here is the question as to why I made this thread....

Why would my car dump smoke out the exhaust? It doesn't make sense how it could've done that. It was definitely oil in the exhaust, not anti-freeze. Is my car fine?

Logicalbomb

iTrader: (1)

I would check oil pressure first obviously, then I would move on to check oil levels. Take a look at your oil lines to the left hand side of your block as well. If you know it's oil for a fact you will find your car to be missing more than average. If you want to check if your seals or gone I would suggest an oil change. When I blew the seals on my first 13B (due to over heating) when we drained the oil pain it had radiator fluid in the oil. I have had my car do a little smoking on start up but nothing ever as alarming as you're describing. I think if you can't identify the problem yourself it may be time to take it in and have it looked at for the sake of your vehicles safety, and for the sake of your sanity.

Good luck, and let me know how it goes!

spahn1

if oil was coming out of your oil filler neck, it is possible that it got oil on you exhaust manifold. the smoke may not have been coming OUT of your exhaust, it may have been burning off of the pipes and it looked like it was coming out of them because the wind was blowing it to the back of the car while driving. that would explain the smoke getting thicker as the car heated up. and that would explain the smoke stopping.

Tyler [S5 FC]

Oil pressure was fine, oil level was still full, so it all looks good there. And yes, the smoke was definitely coming out of the exhaust. When it was idling we were all sticking our hands at the exhaust to smell it to make sure it wasn't anti-freeze/premix/etc.

spahn1

hmm.....maybe you have an exhaust leak on or near your manifold and the oil seeped in?

Tyler [S5 FC]

Thats kinda what I was thinking too, but most of the oil was on the drivers side, and all the exhaust components are on the passenger side. But if there was enough pressure for it to launch out, maybe somehow it forced its way into exhaust/combustion area???

spahn1

idk man, i guess any thing is possible...

gerald m

Was it a backfire or did it come from under the hood ? If your filler cap was on tight it might be possible that the filler tube came out of the engine and blew oil around . the fan would blast the **** everywhere . Someone a while back was talking about their filler tube coming loose and causing problems .. Just a thought .

Tyler [S5 FC]

It was a backfire. Everyone thought it was my engine, but I could tell it came from the back. I was told a few things to check, so I'll do that when I get off work tonight, and see if I can't locate what the issue is.

beefhole

iTrader: (29)

Perhaps when the oil blew all over the engine bay, you gulped a bunch into your intake. Driving around sucked it all in and burned it off.

rx7_FREAKKK

iTrader: (1)

I also get Fuel Cut on Hard Left Turns. And the engine Stalls for a Second. I really wish i knew how to fix that. sorry, Didnt mean to hijack. just have the same issues. just like oil pressure,

Molotovman

iTrader: (49)

Off topic, but it's a dirty fuel sock man. That's a topic that's been covered alot.

kenn_chan

Backfire was strong enough to stall compressor while you were running at max oil pressure. Oil (lots at 100+ PSI) forced its way past shaft seals on turbine side, coated turbine wheel and inside of hsg. You got smoke until it all burned off.

kenn

bumpstart

either pump level,, or you car is using the NA harness,,

IIRC there is a clash between the turbo ecu pinouts and the NA harness
,, where in fact PS output will be tied to the knock sensor input on the turbo ecu

guess what happens when you go hard left
----------


to the OP,, did you now blank those passages on the filler neck? this is a huge no-no
if you blank them over, sump pressure will rise and prevent both the turbo,, and the rotors from draining oil back to the sump
guess where all that oil has to go?
- into the chamber and into the exhaust -

you must put a catch can on it,, you must hook it to permanent vacuum at front of the turbo ,, or use the purge control valve and feed it to the TB

else, dont pass go,, turbos will die early deaths,, and eventually also the oil control rubbers

the final scenario is that you have cracked corner seals, this will allow blowby past the compression seals on side of the rotor , and into the sump,, blowing the oil out and eventually cooking the rubber o ring in the oil control chrome cases

Logicalbomb

iTrader: (1)

Well good news is your FC isn't dead and on jack stands. I say count your blessings and be careful on your air fuel load.

Tyler [S5 FC]

^^^ Right, I feel very lucky! I just bought a FCD to help prevent this in the future.

I do plan on putting an oil catch can on. But please excuse my lack of knowledge here, but how would one go about hooking it up to a permanent vacuum at the front of the turbo, or hook it up to a purge valve to the throttle body? Which is easier, and or better? I was just going to put a hose on it, leading to a bottle and call it a day. And I guess I'm really confused about this cuz wouldn't that start sucking the oil out of your oil pan and into the engine?