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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 08-13-2011, 07:21 PM   #1 (permalink)
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2002 540i smokes on start up

thanks for getting back to me,those pictures really helped.looking at the picture the 2 top hoses on the top of the ccv in back of the intake,mine only has a hose on the passenger side,the hose on the drivers side is missing,any idea where that should connect.thanks again
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Old 08-13-2011, 07:29 PM   #2 (permalink)
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You may find that one of the vacuum lines is plugged. There was a change in the later configuration. There should be a large line that goes down the left hand side of the engine as well as the smaller vaccum line.

Did you notice a dip in the idle when you pulled the dipstick?
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Old 08-14-2011, 07:32 AM   #3 (permalink)
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thanks again.the idle didn t change but i did hear slurping when i pulled the dipstick,i did replace that ccv unit a month ago.when i look inside the throttle body i see oil there,also when the car was parked on a steep incline with nose down ,there was a whole lot of smoke on start up,other than this smoke the car runs perfect.
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Old 08-14-2011, 07:56 AM   #4 (permalink)
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Old 08-14-2011, 11:31 AM   #5 (permalink)
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thanks again for the reply.my main ? is what does oil in the thottle body have to do with valve seals.
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