CCV freezing m62.

Autowa · #1 03-08-2017, 05:31 AM

So this past 2 months has been hard on the poor x5's ccv. Froze 3 times. Replaced everything including hoses and cleaned out the drain tubes. Iv seen a few threads on bypassing it but I feel no need to replace the oem one as it works quits well so before I do that im going to try and deal with the root cause it freezing on the lower tube elbow and diaphragm. Im going to be wraping both the ccv and osv in 12v heater tape and then in reflective heat blanket. The 12v tape will be wired up to a relay with a timmer and a master arm switch to kill it for the warm months. It will only be on when the its warming up say maybe

10 to 15 mins. That's plenty of time to heat up warm the ccv and osv and thaw things out if any water has not beem burned off before you start driving a d pressurizing the crankcase. I live in the city and dont drive far enough to burn off the moister and don't want to have to get another 4x4 for the winter. So this is hopfully the fix.

Perrier · #2 03-10-2017, 09:35 PM

Not sure this would get results.
The problem is the condensation that remains after engine is turned off, turns into gummy stuff and becomes harder to evaporate during next run. Accumulating more of this stuff eventually causes blockage in the system.
Your solution :
will be turned off when the engine is turned off, so not effective.
Will not produce enough heat to burn off and evaporate the moisture.
Will run when you start the car, but the engine is running and doing its own heat and circulation more efficiently than a heat wrap

I wouldn't go down that road if I were you. Understanding you're in the coldest capital in the world, and the drive is too short to burn moisture off, and that you changed the hoses. Have you actually changed the CCV itself? You need to do that if you haven't yet as it will be full of the accumulated thick yellow mayonnaise.

The newer CCV is insulated, and the lines are also insulated. BMW did make that change for cold climates.

So make sure you have insulated CCV and tubes, and take it for a good drive every once in a while, and change the oil more frequently.

80stech · #3 03-10-2017, 10:20 PM

The winter CCCV kit is a band-aid, as is lots of oil changes(expensive and harmful to the environment) and doesn't address the real problem. Cover the engine with a blanket and try to let a small amount of air into the crankcase somehow. I don't have experience with the BMW V8 but I think it all still applies.

Autowa · #4 03-11-2017, 05:01 AM

Yes perrier I replaced everything twice in a matter of 2 weeks. This week again. +11 a few days ago now -29 tonight with windchill. My e36 track car has been more reliable this winter... agreed with the moister build up. First time I took off my ccv and dumped it like 2 tablespoons of water came out. The rubber was in good shap and not torn bit was milky my drain tube was also blocked. Wouldn't a check valve afyer the osv prevent oil being sucked up? Also plauing with the idea of deleting tje whole system and vent to atmosphere (lol epa) with a catch can and draining vack via oil filter housing drain.hmm what to do.

Perrier · #5 03-12-2017, 12:49 AM

Try switching to motul xcess. Lots of claims from users that it helps with this problem.
I did, after my CCV failed, and my oil has been clean (2 years now).
Could be coincidence or the oil composition, I don't know, but it has been working for me and others.

Autowa · #6 03-12-2017, 01:23 AM

Picked up everything to do a ccv/osv delete today including a m60 intake mani and a custom block off plate. Done spending money on thier stupid design.