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Anonymous Posted on Jul 02, 2014

Why is my 03 bmw 316i using an awful lot of fuel? There are also puffs of blue/black smoke?

I try to drive economically but my petrol usage is very high. I am using 10/40 oil, does this really make a difference?

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Stan Parker

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  • Posted on Sep 05, 2016
Stan Parker
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Black exhaust smoke can be caused by one or more leaky fuel injectors, too much fuel pressure (sticking fuel pressure regulator), a faulty MAF sensor or Oxygen sensor, or a engine computer fault.. You need a diagnostic test ran on the vehicle. Plug a scan tool into the OBD diagnostic connector and look for any fuel or sensor related fault codes. Test the fuel pressure and the fuel pressure regulator to see if they are operating within specifications. If normal, the next step is to figure out which injector(s) are leaking. You can remove the spark plugs and look for ones that are carbon fouled. Also inspect the air filter

5 Related Answers

Anonymous

  • 113 Answers
  • Posted on Feb 24, 2009

SOURCE: Radiator removal BMW 316i

hi, the two clamps that secure the radiator have a small slot on the top, if you insert a small screwdriver into the slot and use it as a pry bar you should be able to unclip the holding clamp and it then releases like a hinge.

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Anonymous

  • 467 Answers
  • Posted on Jul 21, 2009

SOURCE: bmw x5 3.td blue smoking coming out engine

RINGS AROUN THE PISTON, OIL LEAKING INTO THE COMBUSTION CHAMBER

Anonymous

  • 124 Answers
  • Posted on Jul 28, 2009

SOURCE: bmw 316i overheating

check if the water is circulating as you might have a blockage in the header tank. this can be checked by opening the radiator cap and check if the water is circulating on top.

Anonymous

  • 68 Answers
  • Posted on Aug 20, 2009

SOURCE: bmw 320d engine smoking

YOU MAY HAVE BLOCKED OIL RETURN HOLES,REMOVE VALVE COVER AND CH# THE 2 F/R

Barrie Love

  • 23 Answers
  • Posted on Aug 29, 2009

SOURCE: bmw 320d engine shaking

You have blown the oil rings.

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