2001 3.0 Diesel white smoke from exhaust video

balongbalong · #1 04-27-2010, 04:36 AM

Ok, i have replaced the following:

1. fuel line
2. turbo
3. cleaned exhaust
4. cylinder head gasket
5. valve cover gasket
6. cleaned injectors
7. dealer says no problem in pistons and valves.

what could be the problem?

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Laurence · #2 04-27-2010, 06:11 AM

The fact that the white smoke disperses quickly would suggest that its caused by water/antifreeze. Smoke caused by oil would linger in the air (eventually causing a smoke screen).
Another good indication is what the smoke smells like. Antifreeze will have a sweet smell – well – like antifreeze(!), which is 100% different to a burning oil smell.
If it is a smell of antifreeze, the most likely place for it to enter an engine is via the head/head gasket (although it could also be via a crack in the block). You say that the head gasket was replaced. Was the head checked for cracks/warping when it was off?

balongbalong · #3 04-27-2010, 07:46 AM

Quote:

Originally Posted by Laurence

The fact that the white smoke disperses quickly would suggest that its caused by water/antifreeze. Smoke caused by oil would linger in the air (eventually causing a smoke screen).
Another good indication is what the smoke smells like. Antifreeze will have a sweet smell – well – like antifreeze(!), which is 100% different to a burning oil smell.
If it is a smell of antifreeze, the most likely place for it to enter an engine is via the head/head gasket (although it could also be via a crack in the block). You say that the head gasket was replaced. Was the head checked for cracks/warping when it was off?

yes, the head, even the cylinders too were checked, and got a passing mark from the dealer

wasn't able to check the smell, i'm going to go back to the shop to get an update, will check for smell this time

balongbalong · #4 05-30-2010, 08:10 AM

Quote:

Originally Posted by Laurence

The fact that the white smoke disperses quickly would suggest that its caused by water/antifreeze. Smoke caused by oil would linger in the air (eventually causing a smoke screen).
Another good indication is what the smoke smells like. Antifreeze will have a sweet smell – well – like antifreeze(!), which is 100% different to a burning oil smell.
If it is a smell of antifreeze, the most likely place for it to enter an engine is via the head/head gasket (although it could also be via a crack in the block). You say that the head gasket was replaced. Was the head checked for cracks/warping when it was off?

Just an update, got the lemon back, and it still has excessive smoke coming from the exhaust.

Here is the time line of what happened soon as i got the car from the stealership yesterday.

1. engine warm, first start no smoke
2. took the car for a 5 kms city drive, car behind(my friend) notices white smoke when i accelerate, none on idle.
3. took the car to a party last night, after a 30 minute city ride, during idle on a stop light i could see smoke building from the back of the X5. went down to check, and yes white smoke from exhaust.
4. on the way home from party, ran the X5 hard (flooring it from stop light to stop light), heavy smoke on the streets i drove thru. (as if i threw a smoke grenade)
5. parked at home left it in neutral and could see white smoke building up in front of my house.
6. this morning, upon cold start, no smoke from exhaust.
7. ran slowly until temperature is up to normal running condition and drove hard 15 kms on a highway
8. parked at home during idle some white smoke (less than the video)
9. rested the car for three hours
10. ran it hard once again for 5 kms.
11. parked it and during idle no smoke.

what is constant is that when i floor the pedal, heavy smoke comes out.

Smoke does not have a sweet smell, just a burning smell.

The smoke is really white, and does linger in the air and causes smoke screen.

I noticed that the vehicle does this excessive smoke during idle after the car has been run hard (floored).

It started to smoke while anytime i step on pedal through rev range 1k to 4k. Any given time i step on it whether light or hard it smokes at the back, continuously until i let go of the pedal, soon as i let go no more smoke.

blueagle · #5 05-30-2010, 09:39 AM

I do not expereince the white smoke you mentioned. Hmm....

What I do encounter is the the black smoke once I floor the pedal just to clean up the exhaust. This is quite normal for our diesel X5 bimmers...

balongbalong · #6 05-30-2010, 11:50 PM

Quote:

Originally Posted by blueagle

I do not expereince the white smoke you mentioned. Hmm....

What I do encounter is the the black smoke once I floor the pedal just to clean up the exhaust. This is quite normal for our diesel X5 bimmers...

are you the same blueagle from bmwccp a few years back?

anyway yes its normal for bmw diesels to have the black smoke once you floor the pedal, but shouldn't occur continuously at any rev range which my X5 does. likewise, white smoke during idle is not normal.