Originally Posted by Bradyrooster

Hi AudiWorld,

Just a quick question on the Audi Crankcase Breather hose. I just changed my PCV and new breather hose. Does the short hose just stay disconnected to vent/purge or does it have to connect into the cold air intake next to the throttle body? Noticed the New Breather Hose vent line is short and doesn't reach the cold air intake port. Is there a workaround for this? The electrical connection to the Breather hose doesn't give any play in order to be stretched to the cold air intake. If it does have to connect to the cold air intake is there a way to extend the line?

Originally Posted by cW6mT mKviGLi

you are correct. I have the Endoscope on the floor with me while I'm cranking beneath the vehicle.

Originally Posted by ncnmra

It it not possible to turn the crank by using the waterpump or the belt itself?

Originally Posted by cW6mT mKviGLi

You probably can, but I didn't want to potentially overtorque the water pump pulley or use the belt. The crank tool was about $18 from Amazon and required me dropping the belly pan, plus I had the endoscope already.

I figured the cost of that isn't too bad versus damaging another accessory driven component.

Originally Posted by ncnmra

Yeah for sure. I bought the tool already in anticipation, but the added work to jack the vehicle/remove the belly pan/be under it to turn the crank while not seeing what's going on just sort of put me off. Does it take a good amount of force to turn the engine with the plugs out? I presume you left the belt on while doing it? It's just a shame that it can't be easily done from up top.

Originally Posted by meyergsr

In my opinion it makes no difference if you change the oil at 5k or 10k.
I purchased my 2017 with 36k and did 5k changes like clock work and still have high oil consumption at 78k. One quart per 800 miles. Dealer diagnosed with defective piston rings.
If you follow this thread. The trend with these vehicles, the majority start having high oil consumption around 80k miles. There is nothing you did wrong or can prevent it from happening. The rings are a low tension design used for higher performance and better fuel economy at the expense of longevity.

Originally Posted by gbgastowers

The new piston rings (mostly oil ring) used in todays engines are designed to increase engine efficiency. These rings are also contributing to the oil consumption and carbon buildup problems we are experiencing

Originally Posted by Miss Curmudgeonly

We sound like twins with our cars - I also have the 2017 Q7, bought in 2020, with one previous owner who also maintained it as I have. Hopefully my engine isn't close to blowing, but I do have a hefty repair bill because of a water pump leak, motor shutter repair (with the Drive System Malfunction warning), and a windshield that cracked out of nowhere. (Also AC problems, with a leaking evaporator core, but by some miracle the dealer told me that was covered by some warranty.)

I found this thread because I too have had the oil consumption problem, which started pretty much right away (38K miles when I bought it, now at 85K). I haven't kept records on it, but will be doing so going forward. All I know is that i've had WAY more problems with this car than I ever did with my Honda CR-V, which I had for 15 years and was still going strong. The only reason I decided to get a new (used) car was because I was worried that because of its age, it might leave me stuck somewhere out in the boondocks where I like to adventure to. Ha! I worry a lot more about my Audi doing that.

Originally Posted by cW6mT mKviGLi

So far I have soaked all 6 cylinders for about 8 to 12 hours each. Rotating the crank has been easy so far and has gone without issue.

Starting the 2nd round of soaking now to hopefully finish by Saturday.

Originally Posted by ripping08

There has been a class action lawsuit for 2017 Audi with faulty pistons causing consumption issues but Q7 weren’t included. We may need to start one. https://topclassactions.com/lawsuit-...ack%20of%20oil.