EGR catch can???

[rusty00]

Hi All,

Most probably a silly question but,

Just wondering is it possible to have a catch can type set up off the EGR valve to stop the sludge build up or am I way off track?
Also do you need to block it off on the CDR 2012 motors?

[Rock Trol]

The egr system is a steel pipe and the egr gases are exhaust gases so you would need a particulate filter to do any good. In the CRD's the EGR problem isn't as bad. It's illegal to block the egr but there are also benefits for those that do....or so I am told.

[Hodge]

Yes it's illegal, but block the damn thing. No matter what engine, it's like re-piping a portion of you sewer back into your fresh water system ... Same principle.
Mines is a 2009 CRD. And one thing I definitely noticed is much much cleaner oil after changes. That alone makes it worthwhile.
And yes your car might be overboosting after blocking the EGR. But this is easily overcome with a dawes and needle valve.

[rusty00]

Thanks for the clarification on the EGR.
If a filter was used would it work and I wonder how much would it work.
Would it restrict anything down the line and cause any other problems.
Would it be worth it and help?
If the CDR is better with this problem, by doing something it should prevent any problems in the long run?

I assume the filter would need to be changed regularly.

[mudski]

Thanks for the clarification on the EGR.
If a filter was used would it work and I wonder how much would it work.
Would it restrict anything down the line and cause any other problems.
Would it be worth it and help?
If the CDR is better with this problem, by doing something it should prevent any problems in the long run?

I assume the filter would need to be changed regularly.

Im assuming the filter your asking about is for the catch can? The catch can filters the crank case vapours before they re enter the air intake. Most have a filter in them which you clean out.
Basically whats ideal for a motor is cool, clean air. As it stands now, its hot, oily and soot filled air. Blocking the egr and installing a catch can, pretty much removes these totally.

Sent from my SM-P600 using Tapatalk

[rusty00]

I was referring to RT comment on the EGR particulate filter.
I am adding the vapour catch can next week to protect the air sensor.

[Rock Trol]

Sorry I was not clear in my comments. There is no EGR particulate filter. I was just saying that the only way you could clean the EGR gas is with a DPF (Diesel Particulate Filter) such as they use on some models of car exhausts. These are complex, expensive and big. Blocking the EGR is the only way. I was just being a bit cryptic. You also get more down low torque when you block it. If its a complete block (no small hole drilled through it - 8mm) then you will also get 0401 errors generated by the system and you check engine light will come on. A scangauge can clear these when they occur.

[mudski]

I was referring to RT comment on the EGR particulate filter.
I am adding the vapour catch can next week to protect the air sensor.

Ok in that case a filter would be as useless as tits on a bull in my opinion. Just block the egr and be done with it. CRD's still block up the intake just as much as the earlier Di motors. Its an egr system, all the same no matter what motor. I have been selling a lot of cans to a local mechanic who just does European diesels. Mostly fairly new and late model cars. He's blocking egrs and fitting catch cans on these, and removing entire intake systems off car that are not even two years old to clean out the intake of thick oily sludge thanks to the egr system and oily crank case vapours.
Egr systems are bad news for a diesel. Period.

Sent from my SM-P600 using Tapatalk

[rusty00]

Sweet

Thanks guys, this explains a lot and thinking it was a silly question was not in the end.

I was told by a big brand turbo repairer not to block the EGR as it caused more problems than it's worth and noticed Nissan head took his off with a similar comment.

Will look into it some more and do agree it is worth blocking.
Catch can going on next week, any suggestions to a particular type Mudski?

[threedogs]

No silly questions here
Rusty, most will say not to block because of legallities.
Ask the same question to a mechanic?