XSeries-forum

Folks, iv'e been reading up some of the posts about the dreaded exhaust smoke syndrome which i seem to have developed (not me the car by the way). I'm just wondering where the best place to purchase the parts would be in your experience and i'm also a bit confused with the proper name for the part.
My local indy is calling it a PCV valve but searching around on the web it appears it maybe a CCV valve? are they different parts or one and the same thing? i'm going to have a crack at replacing it (or them) myself.

thanks

by the way nothing has been diagnosed as yet im trying this first before investigsting the more potentially expensive faults

Start with this: no13
http://www.realoem.com/bmw/showparts.do ... g=11&fg=15
Best place, Bmw dealer~£25 each
Very easy job to do.

That's great thanks for your help. I'm guessing there are two to replace then? I was also told to use an additive to help clean everything out. There seems quite a few to choose from, any experience on the better ones to use?

Been bmw today, got some ccv, price is £15 each , You need 2. You could do more damage using cleaning additive then gain anything. Avoid.

Please expand on what damage could be done using which additives . Fuel system cleaners such as redex reputedly clean carbon deposits left by excessive oil in the intake valves and on the injectors .

Not trying to scare the op but serious exhaust smoke from an N62 V8 engine can be a sign of worn exhaust valve stem oil seals . Usually a lot of smoke after warm engine has idled for a few minutes then revved .

A USA company called All German Auto supply the kit to do replacement economically .
There is a video link showing the procedure .
https://www.agacoolantpipe.com/product/ ... -seal-tool

https://www.agacoolantpipe.com/product/ ... ation-tool

https://www.agacoolantpipe.com/product/ ... ir-cleaner

https://www.agacoolantpipe.com/product/ ... -hook-tool

And just in case your coolant crossover pipe ever leaks they have that solution as well
https://www.agacoolantpipe.com/product/n62-coolant-pipe

Not saying you need to rush out and buy all this kit . It is useful information for the future when those engines start ageing and putting on the miles . Just try not to thrash an N62 engine .

That's interesting feedback guys. I've stripped everything down today and removed the old ccv's.
They are seriously sludged up and clearly the pipe work and associated holes in the intake have accumulated quite a bit of gunk. I'll post up a couple of pics when it's light tomorrow.
looks likely now that I'm going to have to strip off a lot more in order to clean everything. I'm also going to change the oil/filters and sparks when I'm done. Fingers crossed because the MOT is imminent.

BMW actually sell their own recipe of fuel additive now.....and that is unlikely to damage the engine.  One each for petrol & diesel @£10 a pot.

Richard

question for Richard, my E70 had 70k (full bmw history) on when i bought it 6 months ago so did 14k a year average, so i guess a fair bit of motorway driving. I'm doing 6k a year and not many motorway miles. My guess is my engine is in good order or was when i bought it.! So i only put in shell v power and every other time i fill, i treat it to a tub of "Forte" thinking i'm looking after engine. Do you think i'm doing right or wrong  O:-) 

Read what those who know a thing or two about a thing or two say .
Read as much of the info on this site as you can find http://www.archoil.com/ar6000-fuel-treatment

2 stroke oil mixed at a ratio of around 250 to 1 with diesel has been said to keep the high pressure fuel pump in good order and keep the engine internals spotless clean .

If the engine is running clean and the economy is fine, then I would say all is well.  Preventative 'support' is always better than reactive 'repair' as they say.

Others as indicated above are far more experienced than I on these matters.....

Richard

....but we were talking about engine cleaners not fuel cleaners...

Thanks for , er , clearing that up for me , I didn`t catch on to that . Assumed it was fuel cleaner as there should not be a need for engine cleaners if maintained properly .
Archoil have engine oil additives . Worth reading all the info and approval .

Well it didn't take too long to do the job the longest part was retrieving a lost bolt that fell down behind the brake resevoir!
I removed the ccv's and the housing also the complete inlet and cleaned everything by hand with a toothbrush and some carb/intake cleaner. I also replaced the Sparks and changed the oil and both air and oil filters. It looks like the cabin filter is in need of a swap but that's a job for another Sunday. After everything was vented and dry I took the car out on a run (40 miles app.) and left it to idle on the drive for a bit afterwards.
So far no smoke......
Parts all in at 169 quid and labour 3 cups of coffee ! And to think I was qouted 400 odd quid just for the ccv replacement. It's a joke
I'm going to run through a full tank of vpower with some bmw treatment aswell. I have to say already the idle is smoother so hopefully once all the crap is out I can pass the MOT.

Yes sorry, the thread started out as engine oil additives but i did kinda asked about petrol additives whilst we was on the subject, sorry for any confusion  :-[