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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications n63 valve seals and oil consumption
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      07-23-2016, 03:17 PM   #1
thetrance
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n63 valve seals and oil consumption

so I had my valve seals replaced and intake ports cleaned but the car is still burning around a liter every 3000KM. what else would be causing the oil consumption and whats the fix?
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      07-23-2016, 07:49 PM   #2
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Quote:
Originally Posted by thetrance
so I had my valve seals replaced and intake ports cleaned but the car is still burning around a liter every 3000KM. what else would be causing the oil consumption and whats the fix?
My friend is telling me to do my valve seals . How much is a job like that and how long does it take ? Did you notice a difference after you got it done ?
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      07-23-2016, 09:33 PM   #3
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check the crankcase vent lines
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      07-23-2016, 11:29 PM   #4
thetrance
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check the crankcase vent lines
already replaced!
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      07-23-2016, 11:32 PM   #5
thetrance
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Originally Posted by Zer0Cool92 View Post
My friend is telling me to do my valve seals . How much is a job like that and how long does it take ? Did you notice a difference after you got it done ?
I had it done under warranty, but I can tell you that they can do it without having to remove the engine so it will cost less. they also just slightly lowered the engine to do the carbon blasting, otherwise the replacement of valve seals does not require engine removal
make sure its actually the valve seals that's the problem.... ie smoke from tailpipe when car is idle and you tap the gas. mine didn't have that symptom
I didn't notice any difference, except no more vibrations cruising at low rpms. that has definitely improved. I assume that's because of the intake ports being cleaned not the valve seals themselves. I still get tons of soot on the exhaust pipe and burn about the same oil as before, maybe slightly less
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      07-23-2016, 11:34 PM   #6
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Quote:
Originally Posted by thetrance
Quote:
Originally Posted by Zer0Cool92 View Post
My friend is telling me to do my valve seals . How much is a job like that and how long does it take ? Did you notice a difference after you got it done ?
I had it done under warranty, but I can tell you that they can do it without having to remove the engine so it will cost less. they also just slightly lowered the engine to do the carbon blasting, otherwise the replacement of valve seals does not require engine removal
make sure its actually the valve seals that's the problem. ie smoke from tailpipe when car is idle and you tap the gas
I didn't notice any difference. I still get lots of soot on the exhaust pipe and burn about the same oil as before, maybe slightly less
Ya my car has white smoke at idle and I had an exhaust video when I was rolling and when I floored it, big puff of white smoke came out the back. You have any clue how much the dealer might charge, as I'm out of warranty. I'm at 71k miles
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      07-26-2016, 10:20 PM   #7
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Could very easily be turbos seals. Check for axial/radial shaft play on the turbo shafts.
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      07-31-2016, 06:49 PM   #8
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.

Last edited by EL Jeffe 5; 08-29-2016 at 08:10 AM..
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      08-27-2016, 04:01 PM   #9
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Yesterday the dealer diagnosed my problem (burning oil, 2 liters over 10,000 miles) as an issue with the valve seals leaking.

They estimated it would cost $6,600 to repair. Yes, $6,600. When I balked -- because it's a $75,000 car with 80,000 miles -- they offered to discount it by 25% or just under $5k. Painful.

Probably not a coincidence that my sales guy just happened by in the middle of this to see if I wanted to look at the new 7s.

Big sigh.
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      08-28-2016, 04:18 PM   #10
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Quote:
Originally Posted by GooseInOz View Post
Yesterday the dealer diagnosed my problem (burning oil, 2 liters over 10,000 miles) as an issue with the valve seals leaking.

They estimated it would cost $6,600 to repair. Yes, $6,600. When I balked -- because it's a $75,000 car with 80,000 miles -- they offered to discount it by 25% or just under $5k. Painful.

Probably not a coincidence that my sales guy just happened by in the middle of this to see if I wanted to look at the new 7s.

Big sigh.
2 liters every 10,000 miles or so isn't bad for a BMW.

Since ownership, I've been topping off 1 liter every oil change.
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      08-29-2016, 08:09 AM   #11
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Turbo cars will burn oil some more some less
if you don't wanna deal with this only solution is buy none turbo car.
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      08-29-2016, 05:23 PM   #12
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bmw now has a toolkit that allows them to do the job without engine removal which is supposed to reduce the price(or for many dealers just boost profit)
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      08-29-2016, 06:26 PM   #13
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For Valve seal cleaning would you guys only have the bmw dealer do it or you think an independent bmw shop could do it?
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