2002 BMW X5 blowing out black smoke

KAMRAN32

MEMBER
2002 BMW X5
3.0L
6 CYL
TURBO
4WD
AUTOMATIC
120 MILES

I had recon engine fitted and the is blowing black smoke when I press on the gas. Hope you can help me.
thanks
Kamran.

Monday, July 7th, 2014 AT 6:47 AM

8 Replies

RACEFAN966

MECHANIC
5,029 POSTS

Black smoke means it is running to rich, getting to much fuel for one reason or another. You say a recon engine fitted? What do you mean? Is it the original engine rebuilt or a wrecking yard engine or? Get back to me with some info and we will see what we can do to figure this out.

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Monday, July 7th, 2014 AT 9:05 AM

KAMRAN32

MEMBER
5 POSTS

Hi Racefan966,
Thanks for your quick reply. Yes the engine is from wrecking yard not the original engine.
Thanks

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Monday, July 7th, 2014 AT 9:17 AM

RACEFAN966

MECHANIC
5,029 POSTS

Ok no big deal on that, so its running rich (burning to much fuel). So with that is the check engine light on? What have you done so far?

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Wednesday, July 9th, 2014 AT 8:14 AM

KAMRAN32

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5 POSTS

No check engine sign on the dash board.

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Wednesday, July 9th, 2014 AT 8:28 AM

KAMRAN32

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Can it be the transfer box. I spoke to the mechanic who fitted the engine and he thats said reason for the smoke?

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Wednesday, July 9th, 2014 AT 8:35 AM

RACEFAN966

MECHANIC
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Transfer box? I would think it must be a sensor or injectors or to long of injector pulse or? Would have to do some testing first. I would start with checking o2 sensors then mass air flow sensor, then the TPS.

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Thursday, July 10th, 2014 AT 8:12 AM

KAMRAN32