I have a question for anyone who actually knows. Diesel related.

[ZeeJay]

Man that was lackluster, statements like that usually bring out the pitch forks……

OP don’t have the answer, calibration will determine if restriction will cause a latched fault and derate. The example of 2016 given would fall under EPA 13, anything newer would be EPA17 and later, every jump the calibrations change accordingly. Blocking it can cause some local mechanical issues with cooler though. EGR on a diesel is shit, it creates more issues than it solves.

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[Rusty PW]

Sorry I don’t have any answers. The only diesel experience I have is with my tractor. I just wanted to comment on the regulations being imposed. I remember back in the 1970’s we had a woman who was over the Federal DOT. She was focusing on motorcycle safety at one point. Headlights always on, helmet laws, etc. one of her proposals was to actually require manufacturers to install roll bars on bikes. The proposed design looked like a 2 wheel dune buggy.

She was called "Saint Joan of Claymore". Everyone hated her. That was when Jimmy Carter was president.

 

[biodiesel]

As an American citizen, I have no issue following the laws. All three of my EcoDiesels are emissions compliant and I plan to keep it that way until the laws become clearer. I live in rural New Mexico in which we do not have emissions inspections, therefore circumventing emissions would be very easy to do. My question is what happens when our trucks become 10, 15, 20, 25, and 30 years old?

From my understanding, the federal government and state governments are not on the same page when it comes to emissions on older vehicles. From the extensive research I've done on the matter, it would suggest that states are ultimately in control of determining emissions and how they will be tested and enforced. As crazy as it sounds, if a state like New Mexico doesn't require testing, then technically there are no laws or enforcement saying that we must stay emissions compliant.

It's a complicated issue for sure and I hope there will be more clarity for those who plan to keep their vehicles for 20+ years.

 

[BourbonRunner]

As crazy as it sounds, if a state like New Mexico doesn't require testing, then technically there are no laws or enforcement saying that we must stay emissions compliant.

Believe it or not, the Feds don't have jurisdiction to compel NM or others to do emissions... or even inspections.

It's a complicated issue for sure and I hope there will be more clarity for those who plan to keep their vehicles for 20+ years.

Sure is.

What is fascinating to me is that California has more or less guided certain aspects of automobile laws/policy for the rest of the country for a long time, filling in the gaps where the Feds don't have the constitutional permission.

 

[biodiesel]

Believe it or not, the Feds don't have jurisdiction to compel NM or others to do emissions... or even inspections.

When I did a deep dive on this issue, I came to the same conclusion. Federal laws can give states guidance on the issue, but they can't tell the states what to do.

The only caveat is if you're running commercially under a business or with a DOT#. At that point, you are under federal guidelines.

What is fascinating to me is that California has more or less guided certain aspects of automobile laws/policy for the rest of the country for a long time, filling in the gaps where the Feds don't have the constitutional permission.

That's correct. California makes the rules, and many other states mirror or follow closely.

I've read that the federal government doesn't require OEMS to support emissions components on older vehicles. I don't mind being emissions compliant as long as Mopar or the aftermarket continue making and selling emissions replacement parts. But as soon as they no longer sell DPFs, EGR coolers, DEF Pumps, DEF sensors, EGR sensors, NOx sensors, EGT sensors, DEF injectors, SCRs, etc., then I will feel at liberty to delete the vehicles and keep on driving.

 

[BourbonRunner]

When I did a deep dive on this issue, I came to the same conclusion. Federal laws can give states guidance on the issue, but they can't tell the states what to do.

The only caveat is if you're running commercially under a business or with a DOT#. At that point, you are under federal guidelines.

Right. I had a DOT card long ago... was required for insurance purposes for the company I worked for.

The thing the Feds can and do is hold highway funds hostage until the states do as whatever the policy du jour is.

IE: 55mph was enacted because the Feds couldn't tell the states that they had to, but they could put a kink in the highway dollar firehose if you didn't honor their wishes.

That's correct. California makes the rules, and many other states mirror or follow closely.

For better and for worse.

I've read that the federal government doesn't require OEMS to support emissions components on older vehicles. I don't mind being emissions compliant as long as Mopar or the aftermarket continue making and selling emissions replacement parts. But as soon as they no longer sell DPFs, EGR coolers, DEF Pumps, DEF sensors, EGR sensors, NOx sensors, EGT sensors, DEF injectors, SCRs, etc., then I will feel at liberty to delete the vehicles and keep on driving.

Funny thing is that once you get to a certain age in many emissions testing states... you don't have to get it tested anymore, either. Ever since OBD2, I've viewed regular emissions tested as another money grab by their states. The sensors will tell you if there's an issue.

 

[biodiesel]

Funny thing is that once you get to a certain age in many emissions testing states... you don't have to get it tested anymore, either.

I suppose the wealthy policymakers assume that after 10 years, most of these 'old' cars and trucks will no longer be supported by the automakers and the vast majority of owners will put their vehicles out of commission due to wear and tear and large repairs.

That mindset actually works in my favor. In 10 years, our diesel-powered vehicles will be forgotten, and nobody will care what I'm driving.

 

[Hugh Jorgan]

Ten years 150k miles into owning a modern Benz high pressure common rail diesel 2.0L I4, VGT, VCT, Variable swirl port intake etc etc.

What are the specific concerns about EGR, wrt to engine longevity?

Are there any specific outcomes that people can definitively tie to the EGR?

 

[kb5zcr]

What are the specific concerns about EGR, wrt to engine longevity?

Are there any specific outcomes that people can definitively tie to the EGR?

The intake gets caked with soot due to the EGR injecting soot into the intake and on into the cylinders. If the EGR took 100% of the gas from after the DPF I don't think this would be a problem.

The government mandates it, but it doesn't do any good for an engine to have its exhaust gas put back down the intake.

 

[biodiesel]

What are the specific concerns about EGR, wrt to engine longevity?

Are there any specific outcomes that people can definitively tie to the EGR?

The EGR isn't as problematic to engine longevity as some people make it out to be. I know a guy with 433,323 miles on his bone stock Ram 1500 EcoDiesel. The only real problem with emissions is the complexity and eventual part failures. EGR coolers, Intakes, DEF pumps, DEF injectors, DPFs, NOx sensors, etc. will eventually need to be replaced. You can see it in my repair log:

Date	Mileage	Part Description	Part #	Cost
02/11/21	92,313	Water Pump	68211202AB	Powertrain Warranty
08/10/21	96,304	Front Shocks Rear Shocks	Bilstein 24-187343 4600 series Bilstein 24-187350 4600 series Labor	$204.00 per pair $152.00 per pair $280.00
09/01/21	97,036	Lower Ball Joints	N/A Labor Wheel Alignment	$199.90 $211.46 $119.95
07/20/22	105,715	Driver side CV Axle	Mopar 68028398AC Labor	$381.89 $211.80
08/27/22	106,964	Rear Cab Exhausters	Mopar 68323649AB	$12.44 per pair
10/28/22	109,119	Battery	Odyssey AGM49H8L5	$312.46
09/15/23	113,732	NOx Sensor - upstream NOx Sensor - downstream	Mopar 68250217AB Mopar 68250214AB	AEM Warranty AEM Warranty
09/27/23	114,118	DEF Injector DEF Pump	Mopar 68438682AA Mopar 68232842AD	AEM Warranty AEM Warranty
11/21/23	115,542	EGR Valve Cooler Bushing x 2 EGR Tube Gasket x 2 O-ring x 2	Mopar 68483334AA Mopar 68490221AA Mopar 68211320AA Mopar 68150060AA	AEM Warranty AEM Warranty AEM Warranty AEM Warranty
02/05/24	118,626	Taillight Blinker Bulb	Sylvania 3157	$16.26 per pair

 

[Ericshere03]

The EGR isn't as problematic to engine longevity as some people make it out to be. I know a guy with 433,323 miles on his bone stock Ram 1500 EcoDiesel. The only real problem with emissions is the complexity and eventual part failures. EGR coolers, Intakes, DEF pumps, DEF injectors, DPFs, NOx sensors, etc. will eventually need to be replaced. You can see it in my repair log:

Date	Mileage	Part Description	Part #	Cost
02/11/21	92,313	Water Pump	68211202AB	Powertrain Warranty
08/10/21	96,304	Front Shocks Rear Shocks	Bilstein 24-187343 4600 series Bilstein 24-187350 4600 series Labor	$204.00 per pair $152.00 per pair $280.00
09/01/21	97,036	Lower Ball Joints	N/A Labor Wheel Alignment	$199.90 $211.46 $119.95
07/20/22	105,715	Driver side CV Axle	Mopar 68028398AC Labor	$381.89 $211.80
08/27/22	106,964	Rear Cab Exhausters	Mopar 68323649AB	$12.44 per pair
10/28/22	109,119	Battery	Odyssey AGM49H8L5	$312.46
09/15/23	113,732	NOx Sensor - upstream NOx Sensor - downstream	Mopar 68250217AB Mopar 68250214AB	AEM Warranty AEM Warranty
09/27/23	114,118	DEF Injector DEF Pump	Mopar 68438682AA Mopar 68232842AD	AEM Warranty AEM Warranty
11/21/23	115,542	EGR Valve Cooler Bushing x 2 EGR Tube Gasket x 2 O-ring x 2	Mopar 68483334AA Mopar 68490221AA Mopar 68211320AA Mopar 68150060AA	AEM Warranty AEM Warranty AEM Warranty AEM Warranty
02/05/24	118,626	Taillight Blinker Bulb	Sylvania 3157	$16.26 per pair

Careful, you don’t wrack up 450k miles driving like a typical customer … the low pressure EGR, post DPF, clean and filtered EGR is mostly used after the engine is fully warmed. A vehicle with 450k miles in just a few years spent very little time warming up, perhaps cold weather but more time on a warm engine.

We’ve always known that starting and stopping an engine is a source of the majority of wear, add is soot loading and the addition of start/stop “technology” and you gotta wonder how good these engines could be if they were designed for MAX service life and MAX efficiency instead of pleasing the tree huggers …

Us city folk are killing the modern diesels, but this has always been the case with emissions.

 

[Jrgunn5150]

When I deleted my Ram at 128,000 miles, the swirl valves were already inop due to soot build up in the intake.

EGR cooler had significant build up, and would have been plugged and failed in another 50k or so.

Post delete analysis showed an immediate, and almost 100% reduction in fuel dilution as well.

 

[biodiesel]

When I deleted my Ram at 128,000 miles, the swirl valves were already inop due to soot build up in the intake.

My 2015 currently has 123,000 miles on it. I'm actually surprised that it hasn't thrown a swirl valve code yet. I do a lot of short commutes with that truck. I'm hoping to get it through one more winter as my daily driver, then I'll have the intake replaced next summer as preventative maintenance rather than run-to-failure.

EGR cooler had significant build up, and would have been plugged and failed in another 50k or so.

That doesn't surprise me. I've already gone through a few EGR coolers.

Post delete analysis showed an immediate, and almost 100% reduction in fuel dilution as well.

I've had no issues with fuel dilution. I'm showing less than 1% on most of my UOA reports. But to be fair, I'm also running a 12-quart capacity with the deep oil pan.

 

[Jrgunn5150]

I don't think my swirl valves ever worked since I owned mine lol

 

[biodiesel]

I don't think my swirl valves ever worked since I owned mine lol

The stock tune will trigger a code if the swirl valves get bad enough. Aftermarket tunes can disable the swirl valves and therefore won't trigger a code. Based on forum feedback, most people with the 2014 - 2019 stock engine get anywhere from 110,000 - 300,000 miles out of the factory intake before it throws a code. How the truck is driven can significantly impact the longevity of the swirl valves. Obviously, the folks who live on the highway have much less issues with their emissions systems. The guy with 433,323 miles on his bone stock EcoDiesel still has the factory DPF.

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