On Aug 11, 2007, at 8:36 PM, Wonko the Sane wrote:
A Diesel Purge treatment will fix this. My 240D engine is very good
about
telling me when it is time to run on Purge for a half hour.
Ok, back home after doing that mountain driving. In the reverse route
the grades are 4-6% versus 8% so
Please explain why a rough running diesel can be diagnosed as weak injectors
with different pop pressures.
--
Luther KB5QHUAlma, Ark
'87 300SDL (272,xxx mi) head case
'85 Ford F250 6.9 diesel (x58,xxx mi) BioBeast
'82 300CD (166 kmi)
'82 300D (74 kmi) getting donor engine-sold
'85 300D
Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
Please explain why a rough running diesel can be diagnosed as weak injectors
with different pop pressures.
--
Luther KB5QHUAlma, Ark
'87 300SDL (272,xxx mi) head case
'85 Ford F250 6.9 diesel (x58,xxx mi) BioBeast
'82 300CD (166 kmi
Luther wrote:
Please explain why a rough running diesel can be diagnosed as weak injectors
with different pop pressures.
A diesel engine will NOT idle smoothly if the injector pop pressures
exceed a 5 bar range. With the pressure matched even closer (2-3 bar)
the engine will idle even more
My experience has been that diesel clatter is caused by weakening of
the spring in the injector. That causes it to fire at a lower
pressure. Eventually it injects the fuel so prematurely that it
ignites while the piston is still on the upstroke.
-Dave Walton
On 8/11/07, John M McIntosh [EMAIL
John M McIntosh wrote:
Well since my 500SEL is busy having a rebuilt transmission installed
I was forced to cart four people across the rockies up the Coquihalla
Highway 5 to 8% grade for nearly 3000 feet of altitude in the 92
wagon. For reference the OM603 will only do 75 mph flat out
On Sat, 11 Aug 2007 23:56:16 -0400 Bill Gallagher
[EMAIL PROTECTED] wrote:
Sounds like the high altitude, grade percent, and load weight produced a
lot of carbon build up ..drive it hard
The conditions he described are what's called for in an Italian tuneup.
He was driving it hard.
Craig
speaking of clatter etc. Some may remember I posted a while back I have
a SDL that clatters louder than a 617 and has alot of black smoke. I
figured it was injectors and so did others. Ordered new injectors from
Rusty and installed them. Clatter seems to be down, smoke for the most
part
Kaleb C. Striplin wrote:
speaking of clatter etc. Some may remember I posted a while back I have
a SDL that clatters louder than a 617 and has alot of black smoke. I
figured it was injectors and so did others. Ordered new injectors from
Rusty and installed them. Clatter seems to be
Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
speaking of clatter etc. Some may remember I posted a while back I have
a SDL that clatters louder than a 617 and has alot of black smoke. I
figured it was injectors and so did others. Ordered new injectors from
Rusty and installed
.
Thanks,
Tom Hargrave
www.kegkits.com
256-656-1924
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of dave walton
Sent: Sunday, August 12, 2007 4:27 AM
To: [EMAIL PROTECTED]; Mercedes Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
My experience
Stuck EGR will produce copious smoke, funky clatter (not like injector
knock, softer) and lousy performance. Test by unplugging the vac line
to the EGR. Usually idles OK, but falls down flat on application of
pedal, goes away at speed.
Peter
On Aug 12, 2007, at 9:33 AM, Kaleb C. Striplin
Subject: Re: [MBZ] thoughts on diesel clatter
My experience has been that diesel clatter is caused by weakening of
the spring in the injector. That causes it to fire at a lower
pressure. Eventually it injects the fuel so prematurely that it
ignites while the piston is still on the upstroke
Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of dave walton
Sent: Sunday, August 12, 2007 10:32 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
The more pressure exerted by the spring in the injector, the more fuel
pressure it takes
Opening pressure does have an effect on timing, as it takes a finite
amount of travel to open the nozzle and there is some compression
effect (although minor).
That's why you should set all the nozzles close to the same pressure,
whatever it is, when rebuilding, else you may get a rumbling
.
Thanks,
Tom Hargrave
www.kegkits.com
256-656-1924
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of dave walton
Sent: Sunday, August 12, 2007 10:32 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
The more pressure
I thought those were usually set on the lean side from the factory?
Mine has not been adjusted before.
Marshall Booth wrote:
Kaleb C. Striplin wrote:
speaking of clatter etc. Some may remember I posted a while back I have
a SDL that clatters louder than a 617 and has alot of black smoke. I
Will it be black smoke? I have never had an EGR problem before.
Peter Frederick wrote:
Stuck EGR will produce copious smoke, funky clatter (not like injector
knock, softer) and lousy performance. Test by unplugging the vac line
to the EGR. Usually idles OK, but falls down flat on
Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
All the flow through the return line is the result of pressure drop
AFTER the injector fires, right?
My direct observation has been that the same injectors set to
different release pressures affect the amount of clatter. I have been
: [MBZ] thoughts on diesel clatter
All the flow through the return line is the result of pressure drop
AFTER the injector fires, right?
My direct observation has been that the same injectors set to
different release pressures affect the amount of clatter. I have been
assuming that is due
Re-read my previous email.
Thanks,
Tom Hargrave
www.kegkits.com
256-656-1924
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of dave walton
Sent: Sunday, August 12, 2007 11:46 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
Liquids don't compress.
Thanks,
Tom Hargrave
www.kegkits.com
256-656-1924
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Peter Frederick
Sent: Sunday, August 12, 2007 11:04 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
Huge inky clouds sometimes. Quite startling -- I had this problem on
my Volvo TD, may not be so bad on the Benz.
Peter
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Say an air compressor is set to turn off at 120 psi. This takes 8 minutes and
x number of strokes of said air compressor to achieve this. Then, change the
pressure cutoff to 110 psi, and it now takes 7 minutes 23 seconds and x-150
strokes of said air compressor. Then, change the pressure to
It seems than at Sun, 12 Aug 2007 12:49:50 -0500, Luther wrote:
Say an air compressor
But diesel is a liquid, and as such it doesn't compress.
-- Philip
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-1924
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Luther
Sent: Sunday, August 12, 2007 12:50 PM
To: Mercedes Discussion List
Subject: Re: [MBZ] thoughts on diesel clatter
Say an air compressor is set to turn off at 120 psi. This takes 8 minutes
and x
On Sun, 12 Aug 2007 11:53:12 -0500 Tom Hargrave [EMAIL PROTECTED]
wrote:
Liquids don't compress.
Believe me, everything compresses. It's just that some things compress
more than others.
Craig
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On Sun, 12 Aug 2007 13:21:40 -0500 Fmiser [EMAIL PROTECTED] wrote:
It seems than at Sun, 12 Aug 2007 12:49:50 -0500, Luther wrote:
Say an air compressor
But diesel is a liquid, and as such it doesn't compress.
It does compress, just not as much as air.
Craig
: [MBZ] thoughts on diesel clatter
On Sun, 12 Aug 2007 11:53:12 -0500 Tom Hargrave [EMAIL PROTECTED]
wrote:
Liquids don't compress.
Believe me, everything compresses. It's just that some things compress
more than others.
Craig
___
http://www.okiebenz.com
For new
Well since my 500SEL is busy having a rebuilt transmission installed
I was forced to cart four people across the rockies up the Coquihalla
Highway 5 to 8% grade for nearly 3000 feet of altitude in the 92
wagon. For reference the OM603 will only do 75 mph flat out up the
8% grade, water
A Diesel Purge treatment will fix this. My 240D engine is very good about
telling me when it is time to run on Purge for a half hour.
On 8/11/07, John M McIntosh [EMAIL PROTECTED] wrote:
Well since my 500SEL is busy having a rebuilt transmission installed
I was forced to cart four people
Sounds like the high altitude, grade percent, and load weight produced a
lot of carbon build up ..drive it hard
Bill
1981 300 TD
Wonko the Sane wrote:
A Diesel Purge treatment will fix this. My 240D engine is very good about
telling me when it is time to run on Purge for a half hour.
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