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      09-17-2013, 07:07 PM   #1
Guat135i
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Noob here... need advise on engine malfunction !!!!

Hello all.

I'm new in the BMW world and I think this forum can help me with my issue:

I just bought a 08' 135i at with 55k miles in the clock. When I got the car (2 weeks ago) the only aftermarket part was a Dinan exhaust... so I decide to bolt on some extra parts to have a extra performance.

JB4
BM intake
VRSF DP

The day I received the car the car was pulling hard without any issues, but after installing the above parts the car start to smoke a lot!!! I search on the forum that this may cause because of the turbo seal.. completely understandable due km of the engine.

the problems started yesterday when somehow the car didn't feel strong and the turbo wasn't working.. (no boost at all) so I try to change the map to 0 (stock) and didn't make any changes either. There's no check light or any codes (based on jb4 interface)..

Also I notice that the tailpipe is wet of oil.. not sure if it's for the turbo.

I checked all the pipes from the turbo, ic, vacuum, etc.. and it's all properly connected.

Can someone had a similar case?

PS: Sorry for my English I'm from Central America.





Here's the car... sorry phone pics



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      09-17-2013, 08:25 PM   #2
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Nice car.

When does it smoke? Under vacuum? Or all the time? It looks like an oily coating on your tips, so it's burning from somewhere. There are numerous possible sources, so we'll need more in the way of specifics. Can you find any oil leaks on the motor, oil filter housing, downpipes, etc?
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      09-17-2013, 09:07 PM   #3
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Quote:
Originally Posted by 135Pats View Post
Nice car.

When does it smoke? Under vacuum? Or all the time? It looks like an oily coating on your tips, so it's burning from somewhere. There are numerous possible sources, so we'll need more in the way of specifics. Can you find any oil leaks on the motor, oil filter housing, downpipes, etc?
Thanks for your response.. the car actually smokes all the time and the weird thing is no leaking anywhere. I checked the ic pipe and there's a little sign of oil.. not sure if this is normal. Besides that there's no sign of oil.

I'm really upset about this situation I only drive the car a couple of days and now the car is in the shop...
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      09-17-2013, 09:48 PM   #4
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Sounds like a locked bearing on a turbo and a blown oil seal. I haven't heard of this before on a BMW N54'before.
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      09-17-2013, 10:26 PM   #5
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Smoking under vacuum suggests shot seals. How was it boosting?
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      09-18-2013, 09:13 AM   #6
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Quote:
Originally Posted by Suds View Post
Sounds like a locked bearing on a turbo and a blown oil seal. I haven't heard of this before on a BMW N54'before.
OMG!.. I'm taking the turbos today and will take some pictures, but will be possible that both turbos got blown at the same time?? is this possible?

Last edited by Guat135i; 09-18-2013 at 09:31 AM..
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      09-18-2013, 09:30 AM   #7
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Quote:
Originally Posted by 135Pats View Post
Smoking under vacuum suggests shot seals. How was it boosting?
before placing the jb4 and dp the car was boosting fine.. no smoke and the turbo was boosting normally .. (how much psi .. not sure I suppose factory psi) right after the performance parts the car sound louder and pulling much harder. I switch the maps 1, 2, 5 to compare the difference and the difference was noticeable. (but the car started to smoke right before the start)

Two days later suddenly the car lost all the power and I try the JB4 gauge command 2-1 (boost on fuel) and confirmed that the car was not boosting at all..

Is there any possibility that this issue may be cause because of the turbo seals?? I'm pretty sure not but I can't find another explanation.
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      09-18-2013, 09:33 AM   #8
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Quote:
Originally Posted by E90Smokingdiesel View Post
before placing the jb4 and dp the car was boosting fine.. no smoke and the turbo was boosting normally .. (how much psi .. not sure I suppose factory psi) right after the performance parts the car sound louder and pulling much harder. I switch the maps 1, 2, 5 to compare the difference and the difference was noticeable. (but the car started to smoke right before the start)

Two days later suddenly the car lost all the power and I try the JB4 gauge command 2-1 (boost on fuel) and confirmed that the car was not boosting at all..

Is there any possibility that this issue may be cause because of the turbo seals?? I'm pretty sure not but I can't find another explanation.
Shot oil seals will burn oil under vacuum (so think coming to a stop, or whenever you are engine braking).

However they can be shot while the actual turbos are still boosting great. My seals are shot, but they boost 18.5PSI all day.

If you're not building boost and smoking, you have a larger problem. Could be a locked up bearing, but i'm not sure. You don't see many outright turbo failures.
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      09-18-2013, 10:12 AM   #9
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Quote:
Originally Posted by 135Pats View Post
Shot oil seals will burn oil under vacuum (so think coming to a stop, or whenever you are engine braking).

However they can be shot while the actual turbos are still boosting great. My seals are shot, but they boost 18.5PSI all day.

If you're not building boost and smoking, you have a larger problem. Could be a locked up bearing, but i'm not sure. You don't see many outright turbo failures.
Sorry for the noob questions, does the N54 has a safe mode that can enter due overheat factor, overboost, etc?? so the car does not boost at all?
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      09-18-2013, 10:16 AM   #10
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There is a "limp" mode, but it should reset after you restart the car. Have you pulled your plugs to see what they look like?
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      09-18-2013, 10:21 AM   #11
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Quote:
Originally Posted by Davyhay View Post
There is a "limp" mode, but it should reset after you restart the car. Have you pulled your plugs to see what they look like?
I only checked 1 spark plug and looked new.. I believed the last owner changed it before selling the car, and regarding the Limp mode I may discard this point because I restart the engine several times and there's no sign or light in the dash..
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      09-18-2013, 11:18 AM   #12
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If the car is smoking, it would stand to reason it is burning oil. This would mean you would see carbon buildup on the plugs. If the oil was getting to the engine through the intake, each plug should show some black. If the oil is getting in through a bad seal around the spark plug well, it would likely only be one plug that would be black.

Now, a bad seal does not explain your lack of boost. Have you tried disconnecting your charge pipe from the rubber IC coupler to see if there is any oil there? That is the last place intake air would pass before entering the engine.
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      09-18-2013, 11:32 AM   #13
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Quote:
Originally Posted by Davyhay View Post
If the car is smoking, it would stand to reason it is burning oil. This would mean you would see carbon buildup on the plugs. If the oil was getting to the engine through the intake, each plug should show some black. If the oil is getting in through a bad seal around the spark plug well, it would likely only be one plug that would be black.

Now, a bad seal does not explain your lack of boost. Have you tried disconnecting your charge pipe from the rubber IC coupler to see if there is any oil there? That is the last place intake air would pass before entering the engine.
Actually I checked the Rubber IC coupler and yes was a little sign of oil.. does this mean something? is this normal?

As for the spark plugs I will double check on all the cylinders and see how they look.. thanks for your advise.
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      09-18-2013, 12:31 PM   #14
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I would say a little oil is perfectly normal as our cars have issues with oil coming through the intake, thus the need for walnut blasting of the intake valves.
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      09-18-2013, 02:28 PM   #15
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sounds like A/F ratio? i used to run very rich until i got tuned up properly...
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      09-18-2013, 03:29 PM   #16
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You might have had some marginal parts that the increased boost killed. Did the down pipes go in easy or was there any hammering? A bad PVC valve can also cause oil problems by pressurizing the crank case.
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      09-18-2013, 04:17 PM   #17
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Quote:
Originally Posted by Twhill19 View Post
sounds like A/F ratio? i used to run very rich until i got tuned up properly...
Can the air fuel ratio affect the boost?? The car was running fine with map 1, 2, 5 suddenly the car got slow...
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      09-18-2013, 04:22 PM   #18
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Quote:
Originally Posted by BEAR-AvHistory View Post
You might have had some marginal parts that the increased boost killed. Did the down pipes go in easy or was there any hammering? A bad PVC valve can also cause oil problems by pressurizing the crank case.
Mmmm interesting. .. the PCV could be a good point.... how do I know if the PCV needs to be replace??
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      09-18-2013, 05:00 PM   #19
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9/18 update: the DP has been remove and there's no sign of oil in the DP or the turbos.. it's weird huh ~~ I thought the turbo seals was bad because of the blue smoke and the wet tailpipe... but if the turbo seals are shot the DP or the turbo will have oil sign right?? correct me if I'm wrong.. tks

The only thing I notice is that the turbo wastegate rattle's a little.. (the turbo that is behind)
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      09-18-2013, 06:17 PM   #20
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Quote:
Originally Posted by Guat135i
9/18 update: the DP has been remove and there's no sign of oil in the DP or the turbos.. it's weird huh ~~ I thought the turbo seals was bad because of the blue smoke and the wet tailpipe... but if the turbo seals are shot the DP or the turbo will have oil sign right?? correct me if I'm wrong.. tks

The only thing I notice is that the turbo wastegate rattle's a little.. (the turbo that is behind)
Charge pipe? Seals on IC? Seals on intake? That's my other guess
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      09-18-2013, 06:23 PM   #21
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Quote:
Originally Posted by Twhill19 View Post
Charge pipe? Seals on IC? Seals on intake? That's my other guess
I'm going to disarm all the pipes and see if there's any leaks..

Hope to find a solution fast... I have a race with some beasts here.. type R turbo 380 whp, Peugeot Gti turbo 420whp, Godzilla R34 450+ whp, Silvia +400 whp..
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      09-18-2013, 07:16 PM   #22
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Quote:
Originally Posted by Guat135i View Post
I'm going to disarm all the pipes and see if there's any leaks..

Hope to find a solution fast... I have a race with some beasts here.. type R turbo 380 whp, Peugeot Gti turbo 420whp, Godzilla R34 450+ whp, Silvia +400 whp..
You'll need a lot of octane and timing to handle that Skyline
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