Re: [diesel_mercedes] Re: 350 SD Mileage

 

In my 82 300D 70mph is about 3250
 
Mike

From: Lost but making good time. <aldridgetony97@yahoo.com>
To: diesel_mercedes@yahoogroups.com
Sent: Fri, June 17, 2011 1:11:46 PM
Subject: [diesel_mercedes] Re: 350 SD Mileage

 

Just to see what kinda revs people are turning, at 3,000 rpm I am doing right about 60 mph - is that high gearing or just average?
Tony

--- In diesel_mercedes@yahoogroups.com, Nate Rector <tccservice111@...> wrote:
>
> I think the w126s diesels have higher gear as I've been to 118 mph.P.S also I run 205 70 r14s. front,and 215 70 r14s rear.
>
> --- On Fri, 6/17/11, BStromsoe <bstromsoe@...> wrote:
>
>
> From: BStromsoe <bstromsoe@...>
> Subject: Re: [diesel_mercedes] 350 SD Mileage
> To: "diesel_mercedes@yahoogroups.com" <diesel_mercedes@yahoogroups.com>
> Date: Friday, June 17, 2011, 11:37 AM
>
>
>  
>
>
>
>
>
> In my two 1983 w123 300d turbo's, I declare that I get 24-25 mpg all the time unless I am coming down from the Rockies. I believe that is what my owners manual says is "normal" under normal conditions.
>
>  
> brian from la verne, ca
>
>
>
>
> From: Nate Rector <tccservice111@...>
> To: diesel_mercedes@yahoogroups.com
> Sent: Friday, June 17, 2011 8:33 AM
> Subject: Re: [diesel_mercedes] 350 SD Mileage
>
>
>  
>
>
>
>
> My SD hits 32 hwy,and with 50% wmo 34 hwy.
>
> --- On Fri, 6/17/11, audiolaw@... <audiolaw@...> wrote:
>
>
> From: audiolaw@... <audiolaw@...>
> Subject: Re: [diesel_mercedes] 350 SD Mileage
> To: diesel_mercedes@yahoogroups.com
> Date: Friday, June 17, 2011, 10:24 AM
>
>
>  
>
>
>     I just rolled over 350,000 mi. on my way to Court on Tuesday!  '81 300SD. 
>  
>     I keep a three drawer toolbox and various other tools, spares, case of oil, some camping supplies in the trunk.  So no lack of weight.  I add almost 300 lbs each time I sit in the car. 
>  
>     Regularly hover around 26-27 mpg in city driving, drift up to 29 on freeways.  When we hit the road for a long trip, the mileage will get up over 30 and even over 31 sometimes. 
>  
>     I know people who swear that they get 40+ mpg on their 123 cars, which are MUCH less aerodynamic than the 126s.  I know people who swear that they get mid-20s on their Ford and GM V8 diesel pick-up trucks.  I know people regularly see leprauchans on their way home from the bar, late on Friday or Saturday nights.  I know people who swear that they know that dinosaurs and men populated the earth at the same time. 
>  
>     I believe that progress happens, and that modern diesels are more efficient than our old ones.  Does that mean that I believe that a 350 SD regularly gets 35 mpg?  Remember what Teddy Roosevelt said:  Trust but verify. 
>  
>  
>  
>  
>
> In a message dated 6/17/2011 5:42:03 A.M. Pacific Daylight Time, mahatmakanejeeves@... writes:
> A couple days ago a member posted that he calculated 30+ MPG for a 350SD. I have a '91 short body; my mileage on long-distance road trips rarely exceeds 26 mpg. That's at 5 mph over freeway speed limit, steady state with cruise control, for thousand+ miles. My calculation spans several fill ups, which compensates for variable top offs at intervening stops.
>
> My '81 300SD rarely exceeds 27 mpg, same conditions.
>
> I've noticed a roughly +3% calibration error to both cars' speedometers compared to GPS, so my MPG is overstated by a like amount.
>
> How on earth would I get 20-40% additional mileage? Two answers obvious to me are: shed excess weight (like gutting the interior) and reduce rolling resistence (running on high-pressure, skinny tires). Oh, and setting the cruise for 40 mph for lower drag.
>
> Is my car flagrantly out of tune on fuel/air mixture? I don't have soot belching out the tailpipe...
>
> The car's PO had the notorious 3.5 L diesel replaced courtesy of Benz, thank you very much. But I assume the fuel injection has 189K chassis miles on it and I've never touched it.
>
> MKJ
>

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Re: [diesel_mercedes] Can these things run on used engine oil?

 

Any known long term issues with 50/50 Trans/Kerosene/+additive?
 
Mike

From: Blaise Colasante <supervee03@yahoo.com>
To: diesel_mercedes@yahoogroups.com
Sent: Fri, June 17, 2011 4:42:06 PM
Subject: Re: [diesel_mercedes] Can these things run on used engine oil?

 

Use kerosene to dilute the WMO. It's usually cheaper than diesel and is better at thinning out the WMO. I centrifuge after adding the kerosene. Lubricity is provided by the WMO. Use whatever additive you prefer after filtering or centrifuging.
Blaise

From: ygmir111 <ygmir111@att.net>
To: diesel_mercedes@yahoogroups.com
Sent: Fri, June 17, 2011 8:44:30 AM
Subject: Re: [diesel_mercedes] Can these things run on used engine oil?

 

Thanks Mark.
yeah, I agree. I use the WMO, but, mix it with regular diesel. Sort of like
the bread crumbs in meatloaf........to make more.
It seems to really cut down on the smoke and fumes, but, I still get the
savings from the WMO.
The centrifuge seems to be working fine.
I also use a diesel additive, had been using Power Service with this mix.
I just found another company, good prices and seems a good product, that I'm
experimenting with, now.
PRI-D.

Henry

----- Original Message -----
From: <beeser750@q.com>
To: "diesel mercedes" <diesel_mercedes@yahoogroups.com>
Sent: Friday, June 17, 2011 5:37 AM
Subject: Re: [diesel_mercedes] Can these things run on used engine oil?

In my opinion, Henry's got the right approach. Waste Motor Oil (WMO) can be
used as a fuel, BUT, it really needs to be cleaned as much as possible. Do a
search of the archives to read about what he's doing. (I'd use "centrifuge"
as a search keyword.)

I've run as much as 100% pure, uncentrifuged oil. Power is WAAAAAAY down,
and the smell and smoke is quite noxious. I wouldn't recommend it. The
biggest fear I have with it is the always present acid found in used motor
oil. I don't think it would hurt the engine, per se, but, it could/probably
would damage the little precision parts found in the injection pump.

Used transmission fluid is much less problematic.

Mark in Lakewood, CO

----- Original Message -----
From: "ygmir111" <ygmir111@att.net>
To: "diesel mercedes" <diesel_mercedes@yahoogroups.com>
Sent: Thursday, June 16, 2011 9:04:57 PM
Subject: Re: [diesel_mercedes] Can these things run on used engine oil?

I run WMO, but, after centrifuging it.

----- Original Message -----
From: "Chip" < czulli@gmail.com >
To: < diesel_mercedes@yahoogroups.com >
Sent: Thursday, June 16, 2011 3:42 PM
Subject: [diesel_mercedes] Can these things run on used engine oil?

Someone recently suggested that he ran his 1985 turbo diesel on a combo of
regular diesel and old used engine oil, mixed 50-50.

Anyone ever know of this kind of a fuel mix. Old oil is probably free in
lots of places, especially my drive way.

Chip

Houston

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[diesel_mercedes] Re : Biker Talk

 

Well, yeah, actually, but, not the '69 Rocket 3 (the 750).  I've been riding the '72 B50T, aka "Victor 500".  It gets near 65 mpg and is just perfect for a short commute.

Did I mention I have 4 BSAs, in addition to the T160 Trident and the '82 XLS?

Have you ridden your latest acquisition yet?  I don't remember:  Does it have a hack?

Mark in Lakewood, CO

From: "Nate" <vwnate1@yahoo.com>
To: "diesel mercedes" <diesel_mercedes@yahoogroups.com>
Sent: Monday, June 20, 2011 8:01:54 AM
Subject: [diesel_mercedes] Re : Glow Plugs Monark Brand

  Have you drug out the Beezer yet ? . I wanted to ride yesterday but it was drizzly so I passed , maybe this week as we're supposed to heat up .


-Nate

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Re: [diesel_mercedes] Re: Here's a good one for you guys

 

I agree, a good used primer pump from a PAP is my choice, or a new one over the internet. The new black ones look pretty, but they don't squirt enough juice for my taste. I like the old white knurled ones. I use them rarely so it is not like I am going to wear one out. Typically, it is when you run out of fuel, and I just don't do that anymore.
 
brian from la verne, ca
From: Nate <vwnate1@yahoo.com>
To: diesel_mercedes@yahoogroups.com
Sent: Monday, June 20, 2011 12:54 PM
Subject: [diesel_mercedes] Re: Here's a good one for you guys

 

As I said before ;

Although one only has to hand prime the IP infrequently if ever , I vastly prefer the white knob one , it pumps more but also makes a mess with each stroke and if you forget to screw it closed , it'll beat itself to death in sort order .

-Nate
Mark wrote:
>
> Thanks for your posts, "other"! This one has the black hand pump so we
> will replace it as well.
>
> Mark
>
>
>



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[diesel_mercedes] Re: Here's a good one for you guys

 


As I said before ;

Although one only has to hand prime the IP infrequently if ever , I vastly prefer the white knob one , it pumps more but also makes a mess with each stroke and if you forget to screw it closed , it'll beat itself to death in sort order .

-Nate
Mark wrote:
>
> Thanks for your posts, "other"! This one has the black hand pump so we
> will replace it as well.
>
> Mark
>
>
>

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Re: [diesel_mercedes] Re: Here's a good one for you guys

Thanks for your posts, "other"! This one has the black hand pump so we will replace it as well.

Mark


On 6/20/2011 9:14 AM, Nate wrote:
 


I'm the *other* Nate .

If your lift pump is the old style one with the white knurled knob , then yes , it should be replaced as a matter or course . it's cheap insurance .

There's a new style that has a black plastic push cover instead of the old , needs to be unscrewed before hand pumping typ , I don't like it as it pumps less volume .

Both types are still available .

-Nate
Mark wrote:
>
> Thanks, Nate. I suspected it but the problem is worse as the car warms
> up. It runs pretty well for the first 20-25 miles. Would that support
> the lift pump theory?
>
> Mark
>
>
>
>


--
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[diesel_mercedes] Re: 350 SD Mileage

 

118 MPH???

My '81 300 SD is from the Carter/Claybrook era and therefore has the 85mph speedometer. As a consequence it cannot possibly exceed that speed. My '91 SD has a 140 mph speedometer from the Bush era -- it is a much more dangerous vehicle to drive.

MKJ

--- In diesel_mercedes@yahoogroups.com, Nate Rector <tccservice111@...> wrote:
>
> I think the w126s diesels have higher gear as I've been to 118 mph.P.S also I run 205 70 r14s. front,and 215 70 r14s rear.
>

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[diesel_mercedes] Re: Here's a good one for you guys

 

It runs pretty well for the first 20-25 miles.
 
That also really sounds like a clogged fuel tank vent.  The one near the back
wheel.  When you experience the problem or even before here is how to find it. 
First on a hot day when the car is in the sun for a few hours.  Open the fuel
tank cap.  Do you get a woosh of air coming out of the tank?  Clogged vent.  Now
when driving and you experience your problem pull to the side of the road.  Open
the fuel tank cap.  Do you get a woosh of air into the tank like a vacuum?  If
so clogged vent.  Clean the vent and the problem will go away.  As you drive the
pressure will build and you get your problem.  Just one theory.  Many things as
I outlined before can cause this problem.  Just one little crack in a hose that
looks good.  Bad clamp.  Bad return lines at the injectors.etc..etc...Lawrence
Rhodes...

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[diesel_mercedes] Re: Here's a good one for you guys

 

Could be:
 
bad piece of tubing.
 
bad hose clamp.
 
bad lift pump.
 
bad return hoses on injectors.
 
clogged return line.
 
Have you checked for fuel line leaks?  Have you tightened all the connections in
the fuel line starting with the connections at the fuel tank?  Is the fuel tank
pressurized.  Could be the vent is clogged.  This will give you something to
work on.  Sounds like air in the lines.  This is death to a diesel.  Lawrence
Rhodes......
 
 
 
 
My friend has an '85 300SD with about 210K miles. He bought it a year,
> or so, ago and has had a recurring problem that is driving us crazy. We
> went on an 800 mile round trip "adventure" this weekend that allows me
> to share the problem accurately.
>
> Shortly after he bought the car he went on a trip and experienced a loss
> of power which reduced the top speed to ~45 mph. He returned home and
> changed the fuel filters thinking that was the problem. Since we have
> taken a few 400 mile round trips in the car and it would lose power
> intermittently but never limit the speed to less than about 60 mph. He
> discovered that topping the fuel off seemed to help with the problem,
> however, the problem has occurred more and more frequently as time has
> passed. This weekend the problem was so bad that any overpass the car
> would lose power and speed would drop to 40-45 mph and a couple of large
> bridges it would only top them at 15-20 mph. Top speed on level ground
> (I-10 in southern LA and Texas) was 40-45 mph the entire return trip.
> That, my friends, SUCKS! One bridge in LA and one over the Houston ship
> channel, on the return trip, the speedo would barely indicate movement
> (as confirmed by our sight!). Houston to New Orleans is usually a 6 hour
> trip, each way, but we spent 10.5 hours getting there and 12.5-13
> returning. Unacceptable!
>
> We have checked the fuel system from the tank strainer to the injector
> pump and it is not plugged. The car surges at WOT similar to a "hit and
> miss" type engine (see YouTube for example). I suspect the problem is
> the injector pump but do not know of a way to troubleshoot it.
>
> The car is otherwise a beautiful example of a vintage SD and has been
> well cared for it's entire life.
>
> Any suggestions?
>
> Thanks,
>
> Mark in Texas

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[diesel_mercedes] Re: Here's a good one for you guys

 


I'm the *other* Nate .

If your lift pump is the old style one with the white knurled knob , then yes , it should be replaced as a matter or course . it's cheap insurance .

There's a new style that has a black plastic push cover instead of the old , needs to be unscrewed before hand pumping typ , I don't like it as it pumps less volume .

Both types are still available .

-Nate
Mark wrote:
>
> Thanks, Nate. I suspected it but the problem is worse as the car warms
> up. It runs pretty well for the first 20-25 miles. Would that support
> the lift pump theory?
>
> Mark
>
>
>
>

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[diesel_mercedes] Re: Here's a good one for you guys

 


Just for grins , try driving it WOT with the fuel cap removed .

If no help , park where you can make a mess and disconnect the fuel feel line and observe how the fuel _GUSHES_ out , it *must* be a strong 7MM stream and make a BIG mess in a matter of seconds else there's a fuel flow problem , could be a stone dented the feed pipe underneath the car .

DO NOT stupidly reverse the feed & return pipes for testing ~ this is how folks ruin the injection pump ( !$!$! ) .

Surging & loosing power @ speed is almost always a fuel supply problem , try some Startron by Starbrite at your local boat store . maybe a full bottle of DIESEL 911 by power Service , at your local BIG RIG Truck Stop .

If you have a translucent intake screen , get ride of it RIGHT NOW ! replace with a clear plastic one , my buddy's 240D lost power like this right after he replaced the intake screen , I looked at it and saw no fault but it's didn't flow enough , he replaced the old clean one and all was well again .

I wanted to test it in my 300D but he was pi$$ed off and so tossed it out in a fit of pique .

I hope this helps .

-Nate
Mark wrote:
>
> My friend has an '85 300SD with about 210K miles. He bought it a year,
> or so, ago and has had a recurring problem that is driving us crazy. We
> went on an 800 mile round trip "adventure" this weekend that allows me
> to share the problem accurately.
>
> Shortly after he bought the car he went on a trip and experienced a loss
> of power which reduced the top speed to ~45 mph. He returned home and
> changed the fuel filters thinking that was the problem. Since we have
> taken a few 400 mile round trips in the car and it would lose power
> intermittently but never limit the speed to less than about 60 mph. He
> discovered that topping the fuel off seemed to help with the problem,
> however, the problem has occurred more and more frequently as time has
> passed. This weekend the problem was so bad that any overpass the car
> would lose power and speed would drop to 40-45 mph and a couple of large
> bridges it would only top them at 15-20 mph. Top speed on level ground
> (I-10 in southern LA and Texas) was 40-45 mph the entire return trip.
> That, my friends, SUCKS! One bridge in LA and one over the Houston ship
> channel, on the return trip, the speedo would barely indicate movement
> (as confirmed by our sight!). Houston to New Orleans is usually a 6 hour
> trip, each way, but we spent 10.5 hours getting there and 12.5-13
> returning. Unacceptable!
>
> We have checked the fuel system from the tank strainer to the injector
> pump and it is not plugged. The car surges at WOT similar to a "hit and
> miss" type engine (see YouTube for example). I suspect the problem is
> the injector pump but do not know of a way to troubleshoot it.
>
> The car is otherwise a beautiful example of a vintage SD and has been
> well cared for it's entire life.
>
> Any suggestions?
>
> Thanks,
>
> Mark in Texas
> --
>

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[diesel_mercedes] Re : Glow Plugs Monark Brand

 


Them too ! =8-) .

Monark brand is good stuff .

Have you drug out the Beezer yet ? . I wanted to ride yesterday but it was drizzly so I passed , maybe this week as we're supposed to heat up .

-Nate
Mark wrote:
>
> Monark makes glow plugs? I thought they were the preferrred brand for injectors....
>
> Mark in Lakewood, CO
>

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Re: [diesel_mercedes] Re: Here's a good one for you guys

Thanks, AJ. I actually did that on the first fill up this weekend. That made more sense to me than anything else but was not it.

Mark

On 6/20/2011 3:37 AM, ajrnemt wrote:
 

Mark..

Another thing to try..

Take the fuel cap off, the next time it's acting up..

Maybe the tank's venting system has failed, and it's attempting to draw a vacuum..

I've seen this happen a couple of times, both in motorcycles, and my VW diesel pickup..

The vent tube gets kinked/blocked whatever, and the system essentially creates a vacuum trying to get fuel out of the tank.. You shut the car off, over time, the vacuum fails, so you can drive again for distances..

...it'll cost you nothing, and doesn't require tools to try.

AJ RN


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Re: [diesel_mercedes] Replace 300D with 240D both from w123?

 

In theory, it should bolt right on in.  It's a lot easier if you still have the 4-cylinder donor car as a parts source for whatever differences there may/will be (pedal set-up, hoses, linkages, etc.).

I wouldn't worry about the flywheel/flex plate.  Yes, the 5-cylinder unit is balanced for that engine, but, the differences seem to be minor, judging by reports of people who've put manual transmissions in 300Ds.  It'll bolt on....

Mark in Lakewood, CO

From: "DonM" <derekmathew@hotmail.com>
To: "diesel mercedes" <diesel_mercedes@yahoogroups.com>
Sent: Sunday, June 19, 2011 8:34:20 PM
Subject: [diesel_mercedes] Replace 300D with 240D both from w123?

 

Hello;

Can the 240D that came from a W123 be used to replace a 300D in a W123 without any modifications? The 240D motor is sitting around gathering dust as is the 300D which has a bad head and Pappy got little bread. It is an automatic and the flywheel may prove to be the killjoy here.

<>< Don

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Re: [diesel_mercedes] Re: Here's a good one for you guys

 

Oooh, yeah.  That's a good one, too.  I've seen vent tubes that were blocked with mud-based nests built by those solitary wasps (or bees or whatever).  'Course, those were in cars that were allowed to sit around for a few months....

Mark in Lakewood, CO

From: "ajrnemt" <ajrn@hotmail.com>
To: "diesel mercedes" <diesel_mercedes@yahoogroups.com>
Sent: Monday, June 20, 2011 2:37:24 AM
Subject: [diesel_mercedes] Re: Here's a good one for you guys

 

Mark..

Another thing to try..

Take the fuel cap off, the next time it's acting up..

Maybe the tank's venting system has failed, and it's attempting to draw a vacuum..

I've seen this happen a couple of times, both in motorcycles, and my VW diesel pickup..

The vent tube gets kinked/blocked whatever, and the system essentially creates a vacuum trying to get fuel out of the tank.. You shut the car off, over time, the vacuum fails, so you can drive again for distances..

...it'll cost you nothing, and doesn't require tools to try.

AJ RN

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[diesel_mercedes] Re: Here's a good one for you guys

 

Mark..

Another thing to try..

Take the fuel cap off, the next time it's acting up..

Maybe the tank's venting system has failed, and it's attempting to draw a vacuum..

I've seen this happen a couple of times, both in motorcycles, and my VW diesel pickup..

The vent tube gets kinked/blocked whatever, and the system essentially creates a vacuum trying to get fuel out of the tank.. You shut the car off, over time, the vacuum fails, so you can drive again for distances..

...it'll cost you nothing, and doesn't require tools to try.

AJ RN

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