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View Full Version : 06 750li smokes when idle for to long are @ take off


deiontroy
06-12-2012, 02:25 PM
I have a 2006 750 li and it smokes if left idling for to long are @ take off. i have noticed i have to add coolant every few days and i also have to add oil every few day? does anyone knows the problem are a solution i can try?

pass427
06-12-2012, 02:49 PM
Sorry to hear that - How may miles on the car and also do a search, I have seen that exact issue discussed numerous times here. It could be a number of things such as PCV valve, bad valve seals etc.

deiontroy
06-12-2012, 02:51 PM
it has 124,00 miles

deiontroy
06-12-2012, 02:52 PM
it has 124,000 miles

pass427
06-12-2012, 03:13 PM
That sounds like bad valve stem seals. Find a local bmw indy to check it out or a dealership that will give you a complimentary inspection

roadfrog
06-12-2012, 10:39 PM
+1

100% valve seals. 3-6k dollars to repair, depending on whether the shop agrees to do the job with the heads in place, or removed.

1bad540
06-13-2012, 07:08 AM
change your oil often guys.:tsk:

deiontroy
06-13-2012, 10:28 AM
thanks........ i will just trade it in and let someone else deal with the problem

Keif
06-15-2012, 03:10 PM
Check the oil and see if you are getting any water in there. Any leaking of water out of the front of the timing cover (to the left of the water pump)? Also, have you checked your CCVs to see if they are cracked or anything? If you are near the heights at all, bring it on by.

lyon3
06-16-2012, 04:58 PM
I had the same problem on my 745i 2002 113000 miles and was solved quick and reasonable price around 900 inc material. The thing is my friend didn`t take off head cylinder and he changed ccv from the top. That required special tool which he made. Because if you go to BMW they will take head cylinder off and that is a lot of money. I saw it on forum some one done it but didn`t give any ifo DIY about that. I have some pictures to give you some idea. I hope it helped ... :thumbup:

deiontroy
06-23-2012, 09:23 AM
Ok thanks. Does your friend do this on the side? And how long did it take him? If he does can I have some contact info from him

deiontroy
06-23-2012, 09:28 AM
I changed the ccv on both sides they were cracked. Let car run for 10 min and it started smoking @ idle. when I'm driving no smoke. When I idle for 5 min are so smoke. But the coolant is not disappearing anymore.........thinking about just trading it in on another on and letting the dealer have this problem.

roadfrog
06-24-2012, 09:34 AM
I say again, VALVE STEM SEALS! Sucks yes, but at least you know where you stand. I have chosen to live with mine. Other than adding a quart of oil every 5k miles (which by the way, BMW calls "normal"), it's no big deal. No effect on driveability.

Wallace754
07-02-2012, 06:27 PM
I JUST got this problem today. So i'm about to add some oil for a short trip and then off to the shop for an oil change and inspection. So, is it safe for the engine for normal driving?

deiontroy
07-02-2012, 07:09 PM
Yes it's safe to drive

bmw750i2006
08-02-2012, 05:03 AM
Add my 2006 750i (104k miles) to the oil consumption list. For what it's worth i had the car checked out by one of my BMW services buddies and it's most likely the valve seal. I didn't get a detailed quote but his estimate was about $5-6k to get it repaired by BMW.

When the car is idling there is less pressure in the engine and the oil is getting by into the valves. Car should be "ok to drive" but carrying a case of oil in the trunk is never a good thing. Trade in time

AUBURNTIGERFAN
08-02-2012, 05:57 AM
Ok thanks. Does your friend do this on the side? And how long did it take him? If he does can I have some contact info from him

You planning on shipping yours to England? :eeps:

Rookie2008
08-02-2012, 11:57 AM
You planning on shipping yours to England? :eeps:

:rofl::thumbup:. I don't think he realized the location:dunno:.

lotusbled
08-06-2012, 10:01 AM
I would not leave this problem unresolved as the excess oil will destroy the cats. eventually. Very $$$$$$$. I made a vale sring compresser and bought Viton seals which take heat. Did the job for $300, but took some time.

MOPAULY
09-07-2012, 04:56 AM
I would not leave this problem unresolved as the excess oil will destroy the cats. eventually. Very $$$$$$$. I made a vale sring compresser and bought Viton seals which take heat. Did the job for $300, but took some time.

I'm seeing this now at 89k miles. Where did you get your seals from? Oem BMW or elsewhere? Ill probably change them over the winter.

lotusbled
09-07-2012, 10:03 AM
I got mine at a local auto parts store. Just try to make sure they are viton rubber. Sometimes they come out of UK. Ross.

Keif
09-07-2012, 11:57 PM
I'm seeing this now at 89k miles. Where did you get your seals from? Oem BMW or elsewhere? Ill probably change them over the winter.

I just got mine from the dealership when I did mine, fairly cheap, FWIW.

Sent from my SCH-I535 using Bimmer App

MOPAULY
09-12-2012, 06:05 AM
I guess ill need to make a jig for it. You guys use compressed air in the cylinders or is it not necessary with the piston at TDC?

lotusbled
09-12-2012, 07:10 AM
Yes. OK if your at TDC. Compress air is the way I went. Just knocked out an old spark plug and attached a air coupler fitting. Tip... don't forget that there are 4 bolts that hold on a fire wall cover at the back of the engine that will give you a lot more working room. Ross

Keif
09-12-2012, 07:43 PM
+1, putting pressure in the cylinder is necessary, and you'll still likely begin to drop a few valves part way in by accident and almost poop yourself.

Sent from my SCH-I535 using Bimmer App

Keif
09-12-2012, 08:03 PM
+1, putting pressure in the cylinder is necessary, and you'll still likely begin to drop a few valves in by accident and almost poop yourself.

Sent from my SCH-I535 using Bimmer App

lotusbled
09-13-2012, 06:39 AM
Yes I stand corrected. Keif is totally correct. With the piston @ tdc the values will not fall all the way into the cylinder but it will almost impossible to put the valve keepers back on as the keeper groove will not be accessible. The valve must be all the way up against its seat to insert the keepers. Compressed air is the way to go.

MOPAULY
09-14-2012, 05:42 AM
Similar to when I did them on my Healey, I made a wire jig to reach in through the spark plug hole to hold the valve closed while I removed the keepers, although in this case I'll keep it easy and just use air and a tool. I like that jig in the photos but maybe I'll try to find a nice premade tool.

bonnie41
01-20-2014, 02:29 PM
i say again, valve stem seals! Sucks yes, but at least you know where you stand. I have chosen to live with mine. Other than adding a quart of oil every 5k miles (which by the way, bmw calls "normal"), it's no big deal. No effect on driveability.

i just found out i have bad value stem values. How long can you ride with them being bad?

MOPAULY
01-20-2014, 05:11 PM
you'll kill your cat if you keep driving it burning oil. You need to get it fixed or it will slowly take out other components. It's a suck job but needs to be done.

Somedevildawg
03-26-2014, 08:51 PM
Gotta do mine, started failing at 130k miles......any DIY threads covering it? Looks like a crap job and probably goin to need a few more tools than currently in the chest. Can't take it to auction the way it is, would be the laughing stock of the auction...couldn't do it to her....

switz
03-28-2014, 02:35 PM
Not a difficult job, just takes time.

Keif did a great DIY on here and there are some other good ones on the X5 section.