Any - EGR - scot22

Looking at cars I see a number have EGRs and I have found out what they do. Opinion seems divided as to their value and what to do if there are problems.

Looking for enlightenment - what can cause problems with an EGR for it to come up as a fault ? Is it sensible/possible/legal to remove it ?

Views of BR appreciated. I like to know.

Any - EGR - RT

The function of EGRs is to reduce NOx, currently the "bad boy" of emissions as it doesn't dissipate easily in congested cities,but does in the countryside. Both petrol and diesel need them to meet existing Euro emissions regulations but they need to operate more on diesels than petrols - the exception are those diesels with Adblue where EGR operation can be reduced.

EGRs can get blocked with soot and carbonised oil, especially if incorrect oil grade is used.

Since EGRs are only fitted where necessary to meet the mandatory Euro emissions regulation in force at time of registration, it's both illegal and anti-social to remove or disable the EGR.

Any - EGR - SLO76

Looking at cars I see a number have EGRs and I have found out what they do. Opinion seems divided as to their value and what to do if there are problems.

Looking for enlightenment - what can cause problems with an EGR for it to come up as a fault ? Is it sensible/possible/legal to remove it ?

Views of BR appreciated. I like to know.

In all the years I've been driving and all the cars that I've run (probably tempting fate) I've yet to have an EGR issue and neither have any of my customers that've listened to my advice. The reason being, I service my cars on time using the correct oil and I avoid supermarket fuel unless there's no other option near by and I advise anyone who's bought a car off me to do the same. I supplied a tidy old Astra 1.4 16v LS to a good friend a few years back who totally ignored my advice regards supermarket fuel and sure enough EGR valve was gummed up in no time and again not long after being cleaned. Good quality fuel additives that are standard in BP/Shell/Esso fuel do make a difference, especially on an older engine. It's not a big fear though. Maintain the car properly, use good fuel and there's no reason to expect any problems with the EGR valve.

Edited by SLO76 on 10/07/2017 at 21:25

Any - EGR - 3uga

Depending on driving habbits and engine wear, you could get a blocked egr valve. It;s the same with bad fuel.

One way to get more milege between egr cleaning is to clean it as good as posible so soot won't adhere easily.
You can use stove cleaner and watter. It usualy does a great job.

Any - EGR - RT

Looking at cars I see a number have EGRs and I have found out what they do. Opinion seems divided as to their value and what to do if there are problems.

Looking for enlightenment - what can cause problems with an EGR for it to come up as a fault ? Is it sensible/possible/legal to remove it ?

Views of BR appreciated. I like to know.

In all the years I've been driving and all the cars that I've run (probably tempting fate) I've yet to have an EGR issue and neither have any of my customers that've listened to my advice. The reason being, I service my cars on time using the correct oil and I avoid supermarket fuel unless there's no other option near by and I advise anyone who's bought a car off me to do the same. I supplied a tidy old Astra 1.4 16v LS to a good friend a few years back who totally ignored my advice regards supermarket fuel and sure enough EGR valve was gummed up in no time and again not long after being cleaned. Good quality fuel additives that are standard in BP/Shell/Esso fuel do make a difference, especially on an older engine. It's not a big fear though. Maintain the car properly, use good fuel and there's no reason to expect any problems with the EGR valve.

Whilst I've not had the number of cars that have passed through your hands - I too have never had an EGR issue despite always using supermarket fuel - however the similarity is that all my cars are serviced on time, with additional interim oil changes and always the correct oil, both SAE viscosity and ACEA grade.

Edited by RT on 10/07/2017 at 23:06

Any - EGR - scot22

Thanks for these helpful posts.

Seems its not a big issue. I am obsessive with maintenance.

Any - EGR - Wackyracer

I supplied a tidy old Astra 1.4 16v LS to a good friend a few years back who totally ignored my advice regards supermarket fuel and sure enough EGR valve was gummed up in no time and again not long after being cleaned.

We have an identical Astra (wish we didn't but, that's another story) it's been run on supermarket fuel for almost all of its 120,000+ miles and has never had a problem with it's EGR valve. I did remove the EGR valve once and it was as clean as a whistle inside.

As per RT, always serviced on time with correct oil.

Any - EGR - edlithgow

I've never had a problem with an EGR valve either, possibly because I've never had an EGR valve.

That goes for a lot of other automotive advances (like catalysts, oxygen sensors, ABS, airbags, DPF's, DI) too.

To quote Mr Miyagi, "Best defence is no be there".

Any - EGR - Peter.N.

Likewise, I have driven hundreds of thousands of miles with diesels, ever since they had EGRs in fact and I have never had a problem.

 

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