[Vwdiesel] 92 ECO injectors (redux)

[paulr]

Thanks to everyone for all the info!

Loren suggested a finding a diesel shop with
a motorvac diesel system, able (willing) to do
the cleaning work on a small (car) diesel. The
detergent and machine seem to be the way to go.

Scott said he was unable to get a bottle of
the cleaning detergent to experiment with :-(

It seems most practical to reset the EGR with
Vag-Com, and leave it alone until it quits.
Perhaps somebody will have "reverse engineered"
an engine cleaner by then.

For what it's worth, the worst fouling seemed
to occur during the first 10,000 miles. The guy
at the VW parts counter mentioned it. He said
they "saw a lot of them" in warranty, and the
repair is *not*  covered by VW. Switching to
syn-oil slowed the process somewhat.

Thanks everyone to everyone who replied!

Paul

Loren wrote:
 >
>   As I understand it there's something like the  CarbonClean MCS 245 
> for diesels.  That makes it really spendy.  I've seen a couple of them 
> on ebay.  I think Scott has more almost first hand experience with 
> them than I.  Place that used to be in town said there's just nothing 
> like it.  Even gets the intake and valves clean according to him.
>      Loren
> 

Scott Kair wrote:

> 
>     Well, anecdotal evidence....
>     Our vehicle maintenance superintendent is retired USAF and had some
> experience with them at one of the AFB's near Phoenix.  At the time, even
> military trucks were required to pass a state/local emissions test; sop was
> to motorvac the vehicle and drive it directly to the inspection lane.
> Apparently it generated question among the inspectors because emissions were
> below the low end of the charts and economy improved noticeably.
>     We've been trying to get one for our shop for several years, as we run
> low bid fuel that registered all of about 34 cetane the last time I measured
> it and was told to keep my gauge at home.  The area Navstar dealer refused
> to honor the warranty when injectors in a couple of our trucks went bad;
> they require a minimum of 40+ and were able to demonstrate that the
> injectors went bad due to substandard fuel.
>     The obstacle to building our own system is that the detergent isn't
> combustible and the exact metering proportions, as well as how to meter the
> detergent into fuel and at what pressure, are proprietary.  Efforts to scam
> a free bottle of detergent for experimentation purposes have not been
> successful, to say the least.  A travelling vendor ran a gas pickup on their
> corresponding machine, but was not amused when we requested same for a
> heavy-duty Diesel truck.
>     Maybe someday I can give a first-hand report.
>     Scott Kair
> 

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Paul Reich                Electrical Engineer

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