Smell when driving fast
04-10-2010, 11:49 PM
#11
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04-10-2010, 11:56 PM
#12
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- There are known oil leak problems on some V-8 models. The oil may not be readily apparent by staining until the leaks are quite large. Do you experience any unusual oil consumption?
- Cooling system leaks are sometimes first detected by a sweet smell when some coolant hit hot engine parts. At low speed the smell might not be apparent. How is your coolant level?
- Sometimes water and road grime coats the exhaust system and will burn off under hard driving but not as noticeable at low speeds. A good under-car wash might be in order if 1 & 2 are not the problem.
OH - forgot one ... any small animals reported missing in your neighborhood
2. Coolant level is Ok too.
3. Under-car wash...should the plastic protection of cars' bottom be removed? Otherwise I see no sense in under-car wash.
Thank you for sharing your thoughts.
04-11-2010, 01:49 AM
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My Ride: 2008 550i Sport (6-speed)
1. I have 530... Oil consumption is perfectly normal. Have already checked for oil leak - there are no leaks apparent.
2. Coolant level is Ok too.
3. Under-car wash...should the plastic protection of cars' bottom be removed? Otherwise I see no sense in under-car wash.
Thank you for sharing your thoughts.
2. Coolant level is Ok too.
3. Under-car wash...should the plastic protection of cars' bottom be removed? Otherwise I see no sense in under-car wash.
Thank you for sharing your thoughts.
04-11-2010, 06:53 AM
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My Ride: 2004 545i, 6-speed Manual, Silver Grey Metallic, Grey Dakota Leather, Cold Weather Pkg, Premium Sound Pkg, Sport Pkg, Lumbar Support
From what you described, the smell is completely temporary following a hard drive. In my experience from track days and performance driving schools, cars have these smells following hard driving. You are pushing the components into thermal levels they do not get during everyday driving.
04-11-2010, 09:51 AM
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From what you described, the smell is completely temporary following a hard drive. In my experience from track days and performance driving schools, cars have these smells following hard driving. You are pushing the components into thermal levels they do not get during everyday driving.
04-11-2010, 11:49 AM
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My Ride: 2006 BMW 550i
when you push the engine hard, excessive blow-by gasses are released into the crankcase. normally these gasses are recirculated back in to the intake. it sounds like your gasses are leaking out somewhere.
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