Been liking the 20005 to 2007 cdi's was afraid till I learned something about the black death.How to fix,and stop it.
Learned too, in gas engine,the automakers tricks for low emisions,and high mpgs. Direct injection,how after 30000 miles your engine is going to hell, How simple mods will save you big money

__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran

How do you stop black death in CDI? Replace crush rings as routine maintenance type thing?

__________________
Jim

I heard the trick with DI gas engines was take the vacuum line off the brake booster and feed the motor seafoam to clean the valves periodically.

__________________
CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?

yes and dieselfilter yearly.

What specific part of the engine " is going to hell " and what are the simple mods to save you money?

How is a DI gas engine any different than a DI / prechamber diesel in terms of the intake manifold / EGR system / intake valve?

The di engine problem is oil vapor from blow by,use a catch can,so oil vapors will fall back to oil pan.
Yes black death occurs when maint,is not performed on injectors,new seals and cleaning.Saw one engine that top of head was caked bad.

__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran

my son has a 2015 mazda 3 with 2.5 di,had a $500 valve cleaning done.But we will put a catch can soon

__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran

"black death" is a way, way overblown term for the problem associated with the copper seal failures. The residue isn't hard to remove and the copper seals are like $8 for the entire set. Even the most extreme cases of this problem are at most a 4 hour repair. If caught earlier its more like an hour repair. There are updated clamp bolts and seals from MB and I'm not even sure this is an endemic problem if the updates parts are fitted when a repair is done.

The term 'death' to describe this problem is overblown by 3 orders of magnitude IMHO.

I bought an 06 CDI from Tyler with 162K on the clock when I got it. It's still in the family now with 300K miles, can't really speak to what was done before I got it but the total repairs I've done on the car over 140K miles is glow plugs and a thermostat. The car doesn't burn any oil, starts instantly at any temperature, doesn't leak a drop of oil and returns low 40's MGP on the highway. It will easily spin tires (or should I say activate the traction control) in dry weather and as an inline 6 cylinder configuration its very smooth and it even sounds nice at higher revs.

I've owned Mercedes diesels for over 3 decades and the OM648 is, by far, the
best iteration of the MB diesel.

Also own a couple of OM651's and they both have way over 30K miles, both have run flawlessly with the exception of a bad intercooler hose on the GLK250.

__________________
98 Dodge-Cummins pickup (123k)
13 GLK250 (135k)
06 E320CDI (323K)
16 C300 (62K)
82 300GD Gelaendewagen (54K)

The DI engine "problem" is the same issues that have bothered diesels with EGR for decades. Nothing new here, just the gasoline crowd having to learn to deal with valve and intake buildup due to no solvent action from a port or plenum fuel injector setup.

"Black death" in a CDI has absolutely NOTHING to do with maintenance. It's a design flaw that allows compression leak past a copper seal. There are updated parts to address the problem and it's well documented. Has anyone actually heard of an engine "dying" from this problem? I'd imagine not.

Why bother? The oil spray is only part of the problem, the rest is due to vapor deposits and carbon from the EGR system. Unless you have an oil consumption issue, you're wasting your time on the Mazda. They're not known for having major valve problems unlike some of the Fords.

__________________
Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Don't let the possibility of "Black Death" scare you from buying a CDI. Even the worst case (like I had), is not that big of a deal.
http://www.peachparts.com/shopforum/diesel-discussion/383996-05-cdi-injector-black-death-adventure.html


These cars are awesome in many respects, and are becoming affordable. If you could find one that actually has B.D., you could probably get it at a steep discount, and fix it for a fraction of the dealer cost.

Check out this thread and video:
http://www.peachparts.com/shopforum/diesel-discussion/396734-excellant-cdi-video-imo.html
I think his review is spot on. I have had two CDI's and a Bluetec. I would suggest staying away from the Bluetec, unless you can acquire one like I did (79K miles from new-wrecked for $3,000). Good CDI's are going for five grand and up- much less than when I started looking for them.....Rich

__________________

All Diesel Fleet
1985 R107 300SLD TURBODIESEL
2005 E320 CDI (daily)

LOTS of parts for sale!


EGR block kit
http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html

1985 CA emissions 617 owners- You Need This!
Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst.

Sanden Instalation Guide (post 11):
http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html

Miles ? What were the symptoms that lead to him getting the cleaning? Did the dealer shop clean this or someone else?

Yep, this is similar to having a valve cover oil leak. I'm betting much of this comes from those that think a SBC will shut off in flight when the timer hits red. ( Hitting a timer is completely different than having an actual parts failure , all together. )

yes dealer did his,he has over a 100000 now.I'd like to know if the ML whick uses a V6 aluminum block is ok.I heard the v8 420cdi,and 5.0 cdi were trouble

__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran

OK, so you are complaining that the Mazda needed a $ 500 service at 100,000 miles ? ! ? ! That's $ 0.005 per mile. How is that bad?