My BMW X5 3.0D Sports Smokes Black when i take it through lower gears. it is automatic but smokes very black. it is 73000 miles used and model is 2001.
2007-03-24 15:20:00 · 8 answers · asked by moonmohsin 1 in Cars & Transportation ➔ Car Makes ➔ BMW
Black smoke in a gasoline engine is an indicator of an over- rich fuel mixture.
2007-03-24 15:29:40 · answer #1 · answered by kevin k 5 · 0⤊ 1⤋
First question, is it a turbo-charged diesel ? If so, then one probable culprit could be the turbo oil seals. This is a common complaint, exactly around that mileage. If so, a reconditioned exchange turbo is the answer.
If not then other possible things to check or get checked are valve guides, piston rings ( get a compression check done )
If you're not a particularly engineering kind of person get a competent mechanic to look it over, AA/RAC can help as well, good luck, and hope this helps a little.
2007-03-24 22:34:12 · answer #2 · answered by cosmicvoyager 5 · 0⤊ 0⤋
Black smoke's excess fuel; all turbodiesels do it to a certain extent when booted. I'd get a good diesel mechanic to check it over - may need some adjustment or injectors replacing at that mileage.
BLUE smoke is engine oil being burnt.
2007-03-25 07:27:24 · answer #3 · answered by champer 7 · 0⤊ 0⤋
your BMW has a problem with the exhaust filter
M-B calls it bluetek, i dont know what BMW calls it
anyways, the bluetek filters the smoke, you may have a problem with that
also, you may not be fully combusting the fuel, therefore the reason for the black smoke
2007-03-25 23:41:55 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Black Smoke Have you changed your air filter it could be dirty also try some FORTE Fuel additive it cleans the crap out of your fuel system and injectors, fill your tank with BP ULTIMATE diesel its amazing stuff
2007-03-26 13:00:58 · answer #5 · answered by Anonymous · 0⤊ 0⤋
All Diesels chuck out filthy, carcinogenic soot. Even new ones. They are the true polluters of our cities. Ironically, if it wasn't for cat-equipped petrol engined cars which 'filter' a lot of it out, the pollution levels in urban areas would be much worse.
Get a car with a real engine!
2007-03-25 16:57:59 · answer #6 · answered by Anonymous · 0⤊ 1⤋
Could be a leaking intake mannifold gasket and/or vacuum leaks at vacuum hose hook ups.
2007-03-25 21:09:09 · answer #7 · answered by (A) 7 · 0⤊ 0⤋
sounds like your burning oil. check your levels, possibly needs new filter. standard service should sort it.
2007-03-25 05:00:50 · answer #8 · answered by ed_72003 2 · 0⤊ 1⤋