Clean diesel

[sesmith]

This pic. of the tailpipe on our 2015 Golf tdi (6500 mi.) pretty much sums it up. Diesel's have come a long way.

 

[velvetfoot]

Looks very clean, much more so than my 2000 VW Bug TDI. Are the EGR valves still clogging up?

 

[sesmith]

Looks very clean, much more so than my 2000 VW Bug TDI. Are the EGR valves still clogging up?

Not known. They've made the system even more complex, so that's got to be an improvement, right?

 

[BrotherBart]

I just know that the 4 cylinder diesel tractor I bought last November is the cleanest burning diesel I have seen in my life. Without any electronic toys. A lot has to have to do with the low sulphur diesel these days.

 

[begreen]

And perhaps some good Chinese tech?

 

[johnny1720]

My 2014 Jetta has the same clean exhaust pipe. I have about 16k on it and the mileage seems to be increasing the more I drive.

 

[maple1]

That sure doesn't look like what the pipe on our '97 TD used to look like.

Bumper either.

 

[Corey]

Just curious if this is running a DEF/SCR system? Getting rid of soot (which you can see) is relatively easy. Getting rid of NOx (which is 'invisible') is a little harder.

 

[sesmith]

Just curious if this is running a DEF/SCR system? Getting rid of soot (which you can see) is relatively easy. Getting rid of NOx (which is 'invisible') is a little harder.

Yes, so the car meets the new EPA tier 3, California LEV III emissions standards. Some info on the engine and emissions system here:

http://carbuzzard.com/2014/09/volkswagen-has-new-2-0-liter-diesel-engine-for-2015-dubbed-ea288/

and here:

(broken link removed to http://www.volkswagenag.com/content/vwcorp/info_center/en/publications/2015/04/VV2.bin.html/binarystorageitem/file/VIAVISION_e.pdf)

The second link is obviously vw propaganda, but it has some nice drawings of the scr system on pg 7.

 

[velvetfoot]

Does it require replenishing a urea tank?

 

[john193]

Does it require replenishing a urea tank?

All 2015 TDI engines now use a urea spray in North America.

 

[RSNovi]

I think all cars sold since around 2010 require urea. I use about 5 gallons for every 20k miles I drive in a 2.1 L diesel.

 

[johnny1720]

Does it require replenishing a urea tank?

My 2014 Jetta does not

 

[velvetfoot]

I had heard it was only for the Passat, but that was a while a go.

 

[prezes13]

I know that my 2009 jetta didn't use urea. I was under impression that vw's 4 cylinder td was clean enough and didn't require urea injection. Maybe passat uses urea but I don't understand why it's the same motor that hoes to golfs and jettas

 

[sesmith]

I know that my 2009 jetta didn't use urea. I was under impression that vw's 4 cylinder td was clean enough and didn't require urea injection. Maybe passat uses urea but I don't understand why it's the same motor that hoes to golfs and jettas

This is the newest tdi engine (ea288). It's being phased into all the lines (beginning in 2015). To meet the latest, greatest emission standards (LEV 3) it includes the urea injection system.

 

[velvetfoot]

Do people still 'chip' tdis? I had a chip in my 2000 and had to put in a more heavy duty clutch. Needless to say, chipping would lead to a clean tailpipe.

 

[prezes13]

I think the chip is just to put more boost. I know the newest motor has 10hp more I was thinking that it's still the same motor just improved fuel management, but uparently I am wrong. I was into vw long time ago till they started making them in Mexico. My last good vw was my mk IV gti vr6. Made in Germany. It was 10 years old when I traded it in and it still had original battery in it.

 

[velvetfoot]

My Beetle was made in Mexico and had 225k miles on it when I sold it, and it was still running great. Shouldn't have sold it. The programming I had changed the maps. I also put in larger injectors though-maybe the combo caused the clutch to slip-memory's fading. last I heard they were common rail, but I have no idea.

 

[prezes13]

My girlfriend back in 2000 had a 1998 beetle and it was one problem after another. My 2009 Jetta blew a turbo right after the warranty expired. I still think that vw makes great cars just do not make them in Mexico. Their quality control is nowhere near what quality control should be, especially for German product.

 

[velvetfoot]

Was there a bunch of smoke, etc, with the blown turbo?

 

[prezes13]

No. Just no power. No one could figure it out what it was. Check engine light on and limp mode.

 

[velvetfoot]

There was something wrong with the vacuum to the turbo's actuator. They got oil in them. I recall little plastic check valves that go oil in them. Other, easy, cheap stuff to fix, but the d.a. dealers always wanted to change out turbos. It's been a while since I frequented Fred's www.tdiclub.com .

Edit: I recall cracked vacuum hoses were an even more popular cause of limp turbos.

 

[prezes13]

I brought it to the dealer I bought it from they didn't know what it was. Then I towed it to a vw dealer 35 miles away and they changed the turbo and everything was fine, but I got rid of it because from what I heard fuel pump would be next to go. Too bad because I really liked driving it.

 

[prezes13]

On the other hand my buddy from work has a 1999 Jetta with with 350k on it and it still runs good.