Question about 2003 BMW - 3 Series

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Black smoke from tailpipe of BMW 320D

Hello, i have a BMW 320D (2003), which seems to give out a lot of gray smoke from the tail pipe, the cool-lent levels are ok it does not over heat, cant see any pools of oil on the road have check dipstick for oil its normal (oil indicator on dash does NOT light up). it has got the power to pull (accelerate fast) but i have noticed it to be weaker then what it was few months ago, smoke does smell heavy diesel/oil, i drove it this morning with very little smoke but other times it leaves a big cloud behind it seems a bit intermittent, motor oil on dipstick is almost black, any ideas of what may be the cause. Many thanks in advance.

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Hello Kamal Ahmed,

Black smoke is going to be your favorite kind...

It is caused by OVERFUELING...
is a recent enough to be telling you if you have any associated engine codes... (get them read).

Sorry we don't have any 320D in the USA or I would attempt to point up some good prices).

Over-fueling is usually
DEFECTIVE injectors or a COLD START issue.

Water would be putting out WHITE smoke
(big money) ... Just make sure you keep
the appropriate MIX of ANTI-FREEZE...
to avoid WHITE smoke... (electrolysis).

Carnac the Magnificent

Posted on Apr 09, 2017

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I'd get a compression check done...

Posted on Apr 09, 2017


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Posted on Jan 02, 2017

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SOURCE: High oil Consumption, BMW M5

Look for Castrol TWS 10W60 Motor Oil. This car should not burn so much oil, you need to use a different kind. It is recommended by BMW as well. I also heard the VANOS isnt an issue anymore, can be fixed with a different MAFF. Good luck!

Posted on Jan 18, 2009

  • 68 Answers

SOURCE: bmw 320d engine smoking


Posted on Aug 20, 2009

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SOURCE: how to adjust idle on bmw 525 tds,diesel

losen the bolts at the pump flange where it bolts to the engine block and rotate towards the engine about a 1/8 inch also adjust the linkage stop screw inwards no more than 1 1/2 turns

Posted on Jan 21, 2010

  • 46 Answers

SOURCE: 2003 bmw xi will not crank

There is a resistance or cut oout problem in the cluch fan circuit.

Posted on Nov 17, 2013

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