Most people don’t open the bonnet. I’m in my fifties and grew up with at least a working knowledge of how to maintain my car, which I’ve since improved to being a fairly competent diy mechanic. My son is now 17, learning to drive and I’m teaching him basic car maintenance. This weekend, he’s going to change the oil, filter and air filter in my car while I keep my hands clean😂. However it’s becoming a redundant skill seeing as how ICE cars will be replaced by battery cars over the next 20 years
exactly recirculating bad exhaust gasses and particals from the exhaust back through the intake and back to the engine. all it does is line the intake up and cause even more problems. easy to do on the old diesels with a blanking plate no cost more money getting it mapped out.
If the EGR is stuck in the closed position get it deleted before the inlet ports choke the engine to death and eventually self destruct, which happened my last engine. Replaced engine with new one and removed EGR. Has been running perfect for last 6 years
I have a 2017 Evoque, I had 1/4 of gas in the tank, and when I refilled the tank the car started to go slow. I have had a DPF problem. The engine has started to make a strange noise and does not start, I have doubts that it is the diesel that comes out loud. 2 mechanics have seen it and they don't know.  P2463
The EGR problem on my Polo has thankfully cleared on it's own. It is in a very difficult position and needs many hours to replace plus parts cost. Following replacement of the diff pressure sensor and switching to premium diesel plus a couple hundred motorway has fixed it.
switching to premium diesel is the answer agreed but i've blanked off the egr with a 10mm hole as well . A good compromise I think but time will tell I guess.
Interesting to hear you suggest mapping out the EGR. I was under the impression that the DPF/EGR worked alongside each other during the regen process. So, removing the EGR without the DPF would cause dpf blockage on a long enough time scale? May not be the case on all vehicles but I’m sure it is on majority of VAG engines? Would be interesting to hear anybody else’s take on the matter👍🏻
For sure VAG cars need the egr în order for the dpf to properly do its thing, PSA on the other hand it's safe to remove it. That's the only ones I have a proper feedback after egr has been deleted
brilliant as usual, a question how does the cleaning fluid not back up the exhaust pipe and into the engine with the pressure that it is forced in with 130psi ?.
Boom! How’d that get so bad usually they throw the dummy for a pin hole, gotta have been like that for a while, gonna defo need a regen once that replaced
Be careful deleting just the EGR as a lot of vehicles kick the last 10 to 20% of soot out using the EGR in the cool down period after the regeneration, after each regeneration a bit more soot accumulates, 2000 to 5000 miles later the DPF starts to smoke due to excessive varnishing, get the DPF deleted at the same time or don’t bother doing just the EGR. This doesn’t happen on all vehicles but it does occur on older vag.
@@hughmarcus1 if you drive mostly on fast roads you’re vehicle will clear it’s DPF under passive regeneration, it’s when it uses active regeneration where many brands of vehicles have some issues, ime not here to put jimmy down, as soon as I start having issues with my euro 6 I will be getting all 3 done EGR adblue and DPF but I used to do remapping until 8 months ago ( as well as chemical DPF cleaning ) and it would come up on the notes on what vehicles need both deletes or none at all.
If the vehicle is fitted with AdBlue and DPF, an EGR valve is used to reduce NOX while the Exhaust system warms up and the AdBlue system start to function. Totally agree engines suffer with EGR but it’s a price to pay to Reduce Nitrogen and Oxygen being welded together at high temp in the cylinders during efficient combustion (flash temp of over 1200 degrees centigrade) forming NOX which is a pollutant gas. Prior to AdBlue being used EGR was used to damp down this flash temp with less efficient combustion. The soot build up due to this inefficient combustion demands a Particulate filter to remove it. It blocks inlet manifolds and intake valves and makes the engine oil dirty. The Inlet system can be cleaned by companies using crushed walnuts without major engine disassembly. They will visit and do on drive if needed. The other thing to consider full performance of a variable geometry turbo is achieved even with a percentage of gases going back through the EGR valve, delete the EGR valve and the Turbo over speeds leading to drastically reduced turbo life especially for the heavy footed driver.
Great Video Jimmy and a fascinating comment about the EGR Valve. i have to strip and clean my EGR every 6 months with an oil change. Is it legal to have it mapped out? And would this diminish the fuel economy of the car. Thanks Again
@@hughmarcus1 Why so? Someone else has said that they’ve done. 30k with this done on this engine. You can’t both be right. Do you have evidence to support your comment?
Isn't it illegal to delete the EGR as its part of the emissions system (depending where you live)? Or is it one of those things that's you can't tell has been done? Surely it would fail an MOT if it was actually missing (and same for the DPF)?
@@hughmarcus1 If the pipe is missing and 2 blanking plates in their place, I'd suggest any MOT tester or insurance company could tell. Why not fit blanking plates inside the pipe I wonder so visually it looks complete?
@@Nick_G7IZR the newer cars the egr is controlled by the ecu. mapping it out every thing stays in place the mapping removes the egr process ie does not let it open.
I can see possibly why you may perform an EGR delete on a Euro 6 vehicle, but absolutely not on Euro 5 as it doesn't have any treatment to reduce NOx. Even so, I can't imagine that the SCR can remove all that NOx on its own.
I'd imagine an egr delete will improve mpg's because the fuel has a better chance of being fully burnt due to more oxygen in the cylinder and potentially creating less soot? Anyone found this?
Thats been driven some while to block the dpf after the hose split ( pretty common fault btw ) with obviously next to zero performance from the lack of boost. What on earth is wrong with the owner ???
EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. The exhaust gas displaces atmospheric air and therefore reduces the volume of O2 in the combustion chamber at the times when small quantity of fuel is injected . Reducing the amount of oxygen reduces the amount of fuel that can burn in the cylinder thereby reducing peak in-cylinder temperatures and preventing a lean burn hot cylinder temperature condition DONT DELETE FIX IT
Not great advice to recommend deleting the EGR. Ignoring the fact it's illegal and immoral, the DPF will just block up quicker as it will be dealing with way more soot than it was designed for. You'll also lose the performance and fuel economy benefits from having an EGR system. The soot that gets recirculated still has a load of energy left in it and the mass of it helps get the turbo moving.
ive also heard that deleting egr the DPF wont regen is that true? i want to delete my egr but need to find out as much as posible before i do it thanks @@ORileysAutos
No it doesn’t. The theory behind an EGR is that an idling engine requires only 20% of the air that it does under load. So an EGR recirculating the gasses means less being emitted. Of course in practice recycling hot gasses creates issues. Simply stopping those gasses recirculating will have a marginal effect on emissions but will ensure a cleaner intake & therefore less issues
Big thanks for taking the time out to do the videos Jimmy.
I enjoyed watching them, good value.
Glad you like them!
Another great video and job Jimmy
I hope Launch UK looks after you as every video you mentioned them 3 or 4 times keep up the good work mate.
Nothing financial involved with Launch. I just like the company and the staff
@@ORileysAutosthey should do. I’ve bought launch kit based off your recommendations
When was the last time the owner lifted the bonnet, they surley should've seen that split? Great job Jimmy.
Most people don’t open the bonnet. I’m in my fifties and grew up with at least a working knowledge of how to maintain my car, which I’ve since improved to being a fairly competent diy mechanic. My son is now 17, learning to drive and I’m teaching him basic car maintenance. This weekend, he’s going to change the oil, filter and air filter in my car while I keep my hands clean😂. However it’s becoming a redundant skill seeing as how ICE cars will be replaced by battery cars over the next 20 years
exactly recirculating bad exhaust gasses and particals from the exhaust back through the intake and back to the engine.
all it does is line the intake up and cause even more problems. easy to do on the old diesels with a blanking plate no cost more money getting it mapped out.
If the EGR is stuck in the closed position get it deleted before the inlet ports choke the engine to death and eventually self destruct, which happened my last engine. Replaced engine with new one and removed EGR. Has been running perfect for last 6 years
I have a 2017 Evoque, I had 1/4 of gas in the tank, and when I refilled the tank the car started to go slow. I have had a DPF problem. The engine has started to make a strange noise and does not start, I have doubts that it is the diesel that comes out loud. 2 mechanics have seen it and they don't know.

P2463
The EGR problem on my Polo has thankfully cleared on it's own. It is in a very difficult position and needs many hours to replace plus parts cost. Following replacement of the diff pressure sensor and switching to premium diesel plus a couple hundred motorway has fixed it.
switching to premium diesel is the answer agreed but i've blanked off the egr with a 10mm hole as well . A good compromise I think but time will tell I guess.
Excellent job Jimmy 👍
Thanks 👍
You arent short of jobs, booked up for weeks!
Love your vids mate keep up the good work
Thanks, will do!
Thanks Jimmy, Now that's a big gash - that made me laugh. Keep up the good work.👍
Well done Mr 😎
Interesting to hear you suggest mapping out the EGR.
I was under the impression that the DPF/EGR worked alongside each other during the regen process.
So, removing the EGR without the DPF would cause dpf blockage on a long enough time scale?
May not be the case on all vehicles but I’m sure it is on majority of VAG engines?
Would be interesting to hear anybody else’s take on the matter👍🏻
For sure VAG cars need the egr în order for the dpf to properly do its thing, PSA on the other hand it's safe to remove it. That's the only ones I have a proper feedback after egr has been deleted
brilliant as usual, a question how does the cleaning fluid not back up the exhaust pipe and into the engine with the pressure that it is forced in with 130psi ?.
Boom! How’d that get so bad usually they throw the dummy for a pin hole, gotta have been like that for a while, gonna defo need a regen once that replaced
Be careful deleting just the EGR as a lot of vehicles kick the last 10 to 20% of soot out using the EGR in the cool down period after the regeneration, after each regeneration a bit more soot accumulates, 2000 to 5000 miles later the DPF starts to smoke due to excessive varnishing, get the DPF deleted at the same time or don’t bother doing just the EGR. This doesn’t happen on all vehicles but it does occur on older vag.
I’m on 30k after an EGR delete on the same engine (SD4) in a Freelander. No issues. It’s driven mostly on open roads & tows a lot though.
@@hughmarcus1 if you drive mostly on fast roads you’re vehicle will clear it’s DPF under passive regeneration, it’s when it uses active regeneration where many brands of vehicles have some issues, ime not here to put jimmy down, as soon as I start having issues with my euro 6 I will be getting all 3 done EGR adblue and DPF but I used to do remapping until 8 months ago ( as well as chemical DPF cleaning ) and it would come up on the notes on what vehicles need both deletes or none at all.
another great job jimmy
If the vehicle is fitted with AdBlue and DPF, an EGR valve is used to reduce NOX while the Exhaust system warms up and the AdBlue system start to function. Totally agree engines suffer with EGR but it’s a price to pay to Reduce Nitrogen and Oxygen being welded together at high temp in the cylinders during efficient combustion (flash temp of over 1200 degrees centigrade) forming NOX which is a pollutant gas. Prior to AdBlue being used EGR was used to damp down this flash temp with less efficient combustion. The soot build up due to this inefficient combustion demands a Particulate filter to remove it. It blocks inlet manifolds and intake valves and makes the engine oil dirty. The Inlet system can be cleaned by companies using crushed walnuts without major engine disassembly. They will visit and do on drive if needed. The other thing to consider full performance of a variable geometry turbo is achieved even with a percentage of gases going back through the EGR valve, delete the EGR valve and the Turbo over speeds leading to drastically reduced turbo life especially for the heavy footed driver.
I can't understand one thing. Can you explain more how egr affects the better performance of the turbocharger? Thank you
Once AGAIN... brilliant BUT... how did that hose become so damaged??? Too much pressure?
Common failure, Rubber and Oil Vapour don't make a great environment.
Great information ❤
Hi Jimmy can ya delete just the EGR and it won't have a effect on the dpf regeneration also no problem with the adblue m8ty
No affect on any other part.
Great video jimmy
Great Video Jimmy and a fascinating comment about the EGR Valve. i have to strip and clean my EGR every 6 months with an oil change. Is it legal to have it mapped out? And would this diminish the fuel economy of the car. Thanks Again
You gain mpgs
If you have to clean your EGR every 6 months you have problems elsewhere.
Hi Jimmy, what's the difference between fitting a plate to the egr and having it turned off.
Fitting a plate will put an engine light on most cars.
Mapping an EGR out makes sure the engine isn't trying to use EGR gas and altering the fuel etc
It’s a no no on this engine. Guaranteed to create faults & running issues.
@@hughmarcus1 Why so? Someone else has said that they’ve done. 30k with this done on this engine. You can’t both be right. Do you have evidence to support your comment?
Brilliant video as always Jimmy. I have a question- Have you ever used a product called Cataclean? If so is it any good? 😎😎
Isn't it illegal to delete the EGR as its part of the emissions system (depending where you live)? Or is it one of those things that's you can't tell has been done? Surely it would fail an MOT if it was actually missing (and same for the DPF)?
it is just mapped out the egr unit still stays in place.
Technically it is but who’s going to know?
@@hughmarcus1 If the pipe is missing and 2 blanking plates in their place, I'd suggest any MOT tester or insurance company could tell. Why not fit blanking plates inside the pipe I wonder so visually it looks complete?
@@Nick_G7IZR the newer cars the egr is controlled by the ecu. mapping it out every thing stays in place the mapping removes the egr process ie does not let it open.
Jimmy: Please can you advise somewhere that I can get my EGR coded out - I have the same 2.2 engine in a Mk2 Mondeo. Thanks
WV Autos in Luton
I can see possibly why you may perform an EGR delete on a Euro 6 vehicle, but absolutely not on Euro 5 as it doesn't have any treatment to reduce NOx. Even so, I can't imagine that the SCR can remove all that NOx on its own.
98% NOX reduction with AdBlue and SCR. EGR used at warm up and very low load. Engines run a lot cleaner with AdBlue systems.
Great job 👏
Thank you! Cheers!
Top Man
The internal oil leak is killing the engine parts I find
Oil breathing system, turbo failure; etc
EGR delete that would make a brilliant video
How do you stop the ramps from slipping on the concrete
They don't slip
I'd imagine an egr delete will improve mpg's because the fuel has a better chance of being fully burnt due to more oxygen in the cylinder and potentially creating less soot? Anyone found this?
If it’s just the actual EGR it’s about £150 for a decent OEM one. As you say Jimmy they’re a pig to fit though.
Goog job
Thats been driven some while to block the dpf after the hose split ( pretty common fault btw ) with obviously next to zero performance from the lack of boost. What on earth is wrong with the owner ???
My guess is that the O'Rileys Autos didn't have capacity to look into it before now.
Definitely a long time. Months if not maybe a year by the looks of it
@@ORileysAutos As soon as there was an appreciable split, it would have stopped Regen'ing so 500 miles ish??
It’s NOT a JLR throttle body this time 🤣
EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. The exhaust gas displaces atmospheric air and therefore reduces the volume of O2 in the combustion chamber at the times when small quantity of fuel is injected . Reducing the amount of oxygen reduces the amount of fuel that can burn in the cylinder thereby reducing peak in-cylinder temperatures and preventing a lean burn hot cylinder temperature condition DONT DELETE FIX IT
Never saw the point of EGR’s , it’s just recycling your bin’s contents through fridge to eat again
Do you have to gut the egr to delete it
No the mappers can have it stay closed all the time
It's a good idea to also fit a blank plate incase it's stuck open
Not great advice to recommend deleting the EGR. Ignoring the fact it's illegal and immoral, the DPF will just block up quicker as it will be dealing with way more soot than it was designed for. You'll also lose the performance and fuel economy benefits from having an EGR system. The soot that gets recirculated still has a load of energy left in it and the mass of it helps get the turbo moving.
🙄
egr delete will fail mot emissions
No. The difference isn't noticeable
ive also heard that deleting egr the DPF wont regen is that true? i want to delete my egr but need to find out as much as posible before i do it thanks @@ORileysAutos
The e gr is for the reduction of the toxic gas nox the e g r should NOT be deleated even it makes a mess of the intake system
No it doesn’t. The theory behind an EGR is that an idling engine requires only 20% of the air that it does under load. So an EGR recirculating the gasses means less being emitted.
Of course in practice recycling hot gasses creates issues.
Simply stopping those gasses recirculating will have a marginal effect on emissions but will ensure a cleaner intake & therefore less issues
You don't need an egr valve because u have a dpf, the dpf catches all the soot and gases 🤦🏻♂️