I want to install a catch can but I’m not too sure if it can be done on the diesel as I’m not sure of the system. I’ve seen a post on the 2.0 TFSI etc on the forum. Is this possible on the TDI.
Oil catch can for A4 TDI
- Thread starter WesT-gefül
- Start date
Why would you need one Wes, any oil is recirculated back into the engine. Do you think the valves might become coked up with carbon?
Direct injection will always carb up on the back of the valves as there is no. This car is going to get some serious miles on it. More prevention.
No necessarily as some manufacturers have brought in design changes to prevent this by having dual port and direct injection. I don't know if the engine in yours has this though. Perhaps someone who has a little more knowledge might either confirm this or other changes made to prevent this from occurring.
EDIT: Found this http://www.greencarcongress.com/2014/01/2014014-audi.html not for your engine but manufacturers must be aware of this..
EDIT: Found this http://www.greencarcongress.com/2014/01/2014014-audi.html not for your engine but manufacturers must be aware of this..
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Still researching this and found a piece on the tdiclub forum:
"Not sure if VW's EA888 Gen3 PCV design is unique, but it contains a cyclone separator to reduce fine oil mist (and there's also some sort of labyrinth in the block ahead of the PCV to reduce oil mist entering the PCV). The illustration below shows the part upside down; the cyclone is the funnel-looking component. The decanted oil is returned to the crankcase.
https://c1552172.ssl.cf0.rackcdn.com/702753_x600.jpg
Additionally, a number of people who've installed EA888 Gen3 catch cans without messing with the system in other ways have found they've collected little or nothing. Others have experienced differently."
PCV=positive crankcase ventilation) valve
"Not sure if VW's EA888 Gen3 PCV design is unique, but it contains a cyclone separator to reduce fine oil mist (and there's also some sort of labyrinth in the block ahead of the PCV to reduce oil mist entering the PCV). The illustration below shows the part upside down; the cyclone is the funnel-looking component. The decanted oil is returned to the crankcase.
https://c1552172.ssl.cf0.rackcdn.com/702753_x600.jpg
Additionally, a number of people who've installed EA888 Gen3 catch cans without messing with the system in other ways have found they've collected little or nothing. Others have experienced differently."
PCV=positive crankcase ventilation) valve
It seems that the 2.0l petrol engine in Europe has dual injection, the Ea888 Gen 3, see here https://www.alexsautohaus.com/blog/vwaudi-ea888-gen-3-mqbmlb-engines-explained/ to reduce carbon build up.
So I am relatively safe from this, although I doubt if after 15,000 miles it would be an issue unless I decide to keep the car.
Doesn't help you though and I am still trying to find out if the diesel engines have this, or indeed actually suffer from carbon build up. There is talk of overlapping valves, so that some of the combustion process would clean the valves, but not much else...
So I am relatively safe from this, although I doubt if after 15,000 miles it would be an issue unless I decide to keep the car.
Doesn't help you though and I am still trying to find out if the diesel engines have this, or indeed actually suffer from carbon build up. There is talk of overlapping valves, so that some of the combustion process would clean the valves, but not much else...
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A description of the diesel engine here http://www.greencarcongress.com/2014/03/20140322-ea288.html
And here http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=13&cad=rja&uact=8&ved=0ahUKEwjzldPpib3cAhXoCMAKHXuCBsgQFghkMAw&url=http://pics3.tdiclub.com/data/517/820433_EA288.pdf&usg=AOvVaw1AYT7nWmoRIINjta8HWwh_
Although not sure if it is the same engine as in the A4..
And here http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=13&cad=rja&uact=8&ved=0ahUKEwjzldPpib3cAhXoCMAKHXuCBsgQFghkMAw&url=http://pics3.tdiclub.com/data/517/820433_EA288.pdf&usg=AOvVaw1AYT7nWmoRIINjta8HWwh_
Although not sure if it is the same engine as in the A4..
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