LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

strong oil smell with window cracked

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Old 10-08-11, 02:30 PM
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Lynzoid
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Default strong oil smell with window cracked

no oil loss, no sippage anywgere up or down
any ideas ?
ADD: smells like FRESH oil ! not burnt !
no smell under hood whatsoever with engine running. checked pcv and vacuum hoses.
i'm running hollowed out cats with completely stock exhaust.

Last edited by Lynzoid; 10-08-11 at 06:28 PM.
Old 10-08-11, 07:10 PM
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Lynzoid
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research points to...... weak trunk seal ! turns out, when window is open, there's low pressure zone inside the cabin, and exhaust gets sucked in thru the trunk.
will try to lube the seal tomorrow
Old 10-09-11, 06:23 AM
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AlexusAnja
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Fresh oil and exhaust smells different. did you just get oil change recently? Could be just spillage from fill.
Old 10-09-11, 07:19 AM
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Lynzoid
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I changed it 7k ago, and no, there's no sippage, spills, wetness etc. Car just been on lift for inspection. All looking good. Mechanic said, that's the trunk seal idea is viable... Will spray some silicone on the seal and check it later today.
Old 10-09-11, 07:20 AM
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sojah
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you don't live near the Gulf do you¿¿ too soon? sorry, i gots nothin else.
Old 10-09-11, 07:42 AM
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Lynzoid
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Well, i live in Moscow But that's where they count money for oil - not drilling for it here )))
Ok,, mech said, that it's most prolly light exhaust fraction, not fresh oil. He said that he had this smell on his Honda until he installed some tail pipes extensions. That (he claims) took care of this aerodynamics mystery
Old 10-09-11, 08:40 AM
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Originally Posted by Lynzoid
Well, i live in Moscow But that's where they count money for oil - not drilling for it here )))

hahah yeah that's a good one ^ ^ ^, i bet they are still laughing about that in georgia
Old 10-10-11, 09:26 AM
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jayclapp
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Oil in the exhaust seems highly unlikely to me. Oil passing out the exhaust would likely be burned, which causes a very light colored exhaust. It only take a very small amount of burned oil to produce voluminous amount of smoke. Seems it would take a lot of oil leakage out the engine to contain enough unburned oil to be able to smell it. I would think the car would virtually look like a smoke machine and totally undrivable on the road

Also, extending the exhaust pipes to correct exhausted oil sounds a bit suspicious on the LS430. The aerodynamic design of this car is very highly tuned and efficient.
Old 10-10-11, 05:10 PM
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Lynzoid
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That's what i was thinking...
Yes, smelling fresh oil at 70mph is strange to say the least... But i still do.
Old 10-10-11, 08:40 PM
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jayclapp
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I'd check the condition of the cabin air filter.
Old 10-11-11, 06:34 AM
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Lynzoid
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Will do ! But i do not smell any bloody thing with windows closed even if blower is in full blast.
The smell will get in fastest thru open moonroof.
Old 10-11-11, 08:24 AM
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tcr101
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how many miles do you have? Any chance your head gasket's are leaking? I swapped mine around 190,xxx and they was pretty hard to spot the leak
Old 10-12-11, 05:15 AM
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Lynzoid
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Mine have 217000kms.
Why, oh why then i cannot smell even a hint of oil smell, when i stop suddenly, open hood and smell around ?
Old 10-12-16, 10:00 AM
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Lynzoid
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If anyone is interested in fix for this - it's the rubber 'vent door valve', which is under rear bumper, both sides, it was torn and hanging. So it wasnt isolating the cabin from the exhaust properly. I used new piece of rubber and some glue to avoid getting a new part.
Smell was fixed.
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