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  #16  
Old 11-06-2012, 01:48 AM
whunter's Avatar
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Location: Metro Detroit, Michigan
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Answer #2

Diesel owners need to know fuel data
Diesel owners need to know fuel data - PeachParts Mercedes ShopForum

Warning ALL Diesel Owners
http://www.peachparts.com/shopforum/diesel-discussion/309367-warning-all-diesel-owners.html#post2841158

Performing a Fuel Purge on a Mercedes Turbodiesel
Episode 2: Performing a Fuel Purge on a Mercedes Turbodiesel - YouTube



What is this valve and why is it dripping diesel?
What is this valve and why is it dripping diesel?

Fuel tank vent pictures + location
93 300D 2.5L Turbodiesel Power Loss

What happens when a tank vent gets clogged.
What happens when a tank vent gets clogged. - PeachParts Mercedes ShopForum

Imploded fuel tank - so sad!
Imploded fuel tank - so sad!

Why do I have vacuum in my diesel tank.....................?
Why do I have vacuum in my diesel tank.....................? - PeachParts Mercedes ShopForum



MB diesel filtration, how it works.
MB diesel filtration, how it works. - PeachParts Mercedes ShopForum

fuel filter change
fuel filter change - Page 3 - PeachParts Mercedes ShopForum

Diesel filters, no tank strainers please.
Diesel filters, no tank strainers please. - PeachParts Mercedes ShopForum

Primary filter melted by biodiesel?
Primary filter melted by biodiesel? - PeachParts Mercedes ShopForum

I'm baffled and at wit's end!?!?!?!?!
I'm baffled and at wit's end!?!?!?!?! - PeachParts Mercedes ShopForum

Algae/Fungus fixation...
Algae/Fungus fixation... - PeachParts Mercedes ShopForum

Biobor, what is it, why do I need it???
Biobor, what is it, why do I need it??? - PeachParts Mercedes ShopForum

Filters, Fungus, Biocide, etc.
Filters, Fungus, Biocide, etc. - PeachParts Mercedes ShopForum

Algae Clogged Filter Pic StarTron WORKS !
Algae Clogged Filter Pic StarTron WORKS ! - PeachParts Mercedes ShopForum

Braided fuel lines weep. 1984 300TD turbo
Braided fuel lines weep. 1984 300TD turbo - PeachParts Mercedes ShopForum

300SD Fuel Filter Replacement Instructions
300SD Fuel Filter Replacement Instructions - PeachParts Mercedes ShopForum

240D fuel tank removal and cleaning
Good for any W123 sedan.
240D fuel tank removal and cleaning - PeachParts Mercedes ShopForum

Changing the Fuel Tank Strainer on a Mercedes Diesel
Episode 1: Changing the Fuel Tank Strainer on a Mercedes Diesel - YouTube

Check out this fuel pickup screen
Check out this fuel pickup screen - PeachParts Mercedes ShopForum

W123 Fuel Tank Screen Replacement
W123 Fuel Tank Screen Replacement - PeachParts Mercedes ShopForum



Lift Pump taken apart
fuel pressure - PeachParts Mercedes ShopForum
__________________
ASE Master Mechanic
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Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
Automotive Technical Writer

1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D
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  #17  
Old 11-06-2012, 01:49 AM
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Location: Metro Detroit, Michigan
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Answer #3

Fuel feed pressure, supplying the delivery valves is critical at high RPM, it can drastically reduce top speed.

Fuel injection pump starvation with a good lift pump
Fuel injection pump starvation with a good lift pump - PeachParts Mercedes ShopForum

Fuel pressure relief valve adjustment
Fuel pressure relief valve adjustment - PeachParts Mercedes ShopForum

lift pump test
1979 300td -- Can anybody walk me through a lift pump test? - PeachParts Mercedes ShopForum

fuel pressure
fuel pressure - PeachParts Mercedes ShopForum

Here's my payback! Diesel Primer Pump Replacement
Here's my payback! Diesel Primer Pump Replacement - PeachParts Mercedes ShopForum



Injectors and Glow Plugs for Dummies
Glow Plugs Bad......how to tell ?

Inline diesel Injection Pumps
FYI: Inline diesel Injection Pumps - PeachParts Mercedes ShopForum

Fuel injection pump diagrams???
Fuel injection pump diagrams??? - PeachParts Mercedes ShopForum

great internal injection pump pictures
injection pump sluggish?


Italian Tune up
Italian Tune-up links thread - PeachParts Mercedes ShopForum


Diesel Injection Pump TIMING thread
Diesel Injection Pump TIMING thread



ALDA issue threads
ALDA issue threads - PeachParts Mercedes ShopForum

Injector + Heat shield + Nozzle, Prechamber + Collar and Nailing. LINK THREAD
Injector + Heat shield + Nozzle, Prechamber + Collar, and Nailing. LINK THREAD - PeachParts Mercedes ShopForum




Ip rack return spring r&r
Ip rack return spring r&r - PeachParts Mercedes ShopForum

Diesel Timing Chain Link Thread
Diesel Timing Chain Thread - PeachParts Mercedes ShopForum



The rack damper bolt was superseded due to a weak spring failing.
If it does not have the update, it needs it.

so, what does that rack damper bolt (617) actually do?
so, what does that rack damper bolt (617) actually do? - PeachParts Mercedes ShopForum

Part# rack damper pin for 1985 300SD
Part# rack damper pin for 1985 300SD - PeachParts Mercedes ShopForum

Adjusting the Rack Damper Bolt
Adjusting the Rack Damper Bolt

Replacing Rack dampener pin
Replacing Rack dampener pin - PeachParts Mercedes ShopForum


Good information to know.

Run away diesel, why does it happen?
Run away diesel, why does it happen? - PeachParts Mercedes ShopForum

Home Made Special Tools, This is where members can share how they made special tools
Home Made Special Tools, This is where members can share how they made special tools

DIY Adjust the base idle OM615, 616, 617
DIY Adjust the base idle OM615, 616, 617

.
__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
Automotive Technical Writer

1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D

Last edited by whunter; 11-06-2012 at 02:34 AM.
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  #18  
Old 11-06-2012, 01:49 AM
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Answer #4

Brake:
You would be shocked at how often I find:
* Rear caliper inboard pistons fail to return = drag.
* Brake hose internal damage.
* Brake pads seized in the caliper frame = drag or no response.
* Marginal or bad wheel bearing, (mostly front).
* Wrong size tires, (cheap under size).
* Bad wheel alignment.

Brake:

.
__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
Automotive Technical Writer

1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D

Last edited by whunter; 11-06-2012 at 02:09 AM.
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  #19  
Old 11-06-2012, 08:15 AM
Silber Adler's Avatar
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Join Date: Oct 2012
Location: Living on a gravel road in a Red State
Posts: 593
Thanks whunter That is a lot of material to digest. I am starting with the basics of getting the vehicle maintained and working toward other repairs. I get maybe one day every week or two to work on it in my heated shop.

I have been poking around asking about a boost gauge installation, boost gauge installation.

Have seen bits and pieces of the factory workshop manual pop up here. I followed a link to it and went to disc 2 and only to find the material missing in the folders. I am reading about 3-4 hours for every hour of actual maintenance.

This is my third turbo vehicle and second turbo diesel. My 1.6 IDI TD VW has a lot more low to mid range acceleration at present so I know my Merc needs something done to it. This helps.
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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.
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  #20  
Old 11-06-2012, 11:23 AM
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The car rolls very well in neutral although it slows down pretty quick in gear. I have had the rear wheels off the ground to check out the sway bar links and the wheels turn pretty normally.
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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.
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  #21  
Old 11-06-2012, 11:59 AM
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FYI

Quote:
Originally Posted by Silber Adler View Post
The car rolls very well in neutral although it slows down pretty quick in gear. I have had the rear wheels off the ground to check out the sway bar links and the wheels turn pretty normally.
Feel free to call me with questions.

.
__________________
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asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
Automotive Technical Writer

1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D
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  #22  
Old 11-06-2012, 12:57 PM
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For more information about rebuilding injectors, see my signature.
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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge
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  #23  
Old 11-06-2012, 04:51 PM
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thanks whunter and eatont
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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.
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  #24  
Old 11-06-2012, 06:20 PM
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I would give it a full service, to include Valve-Clearances and checking/setting injection-timing.
At the same time assess the wear/stretch of the timing-chain.

I VERY much doubt the injectors will be 'holding you back' Diesel owners seem overly 'obsessed' by injectors.....

Ive found that the 617 'likes' a couple of degrees More advance--say, 2 to 3 degrees more, ie-- instead of say 24 deg, I go 26-27 degrees--especially running blends of methyl-esters...

I had 110 mph out of an old, very rotten 300D n/a that had 150K on the clock, but had the above done....
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W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....
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  #25  
Old 11-07-2012, 01:55 PM
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Location: Palm Springs, CA.
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Anybody have the drag coefficient of a W116??? I am wondering if 140 is possible with the 2.47:1 swap......I can get 120-125 out of it right now with the 3.07:1 axle @ 5000 rpm.

With the 215/70R14's and 2.47:1 axle, not accounting for converter slippage or other variables, 140 mph would come in at 4500 rpm...
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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership
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  #26  
Old 11-08-2012, 11:28 PM
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I put in a new air filter before a road trip. Seemed to run quieter and have better part throttle response but no better on top. The old filter was a mess.

Just had to try it, zoom zoom!
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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.
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  #27  
Old 11-09-2012, 11:01 AM
cho's Avatar
cho cho is offline
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Quote:
Originally Posted by Silber Adler View Post
I put in a new air filter before a road trip. Seemed to run quieter and have better part throttle response but no better on top. The old filter was a mess.

Just had to try it, zoom zoom!
and now...fuel filters and please please check linkage!

cheers
ChO


.
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w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded
next wish/project: w114 coupe OM603 powered
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  #28  
Old 11-09-2012, 08:17 PM
Silber Adler's Avatar
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I got the fuel filters in.
The Pre filter was not as pristine as I once thought. Here it isI compared it directly to a new one.


Also noticed that linkage would not open all the way like many said. Was 8-10 mm shy of the stop screw. Also has new oils in the engine and transmission.

I think it is peppier.

Still want to do the valve adjustment. A friend has an extra set of wrenches and an extra valve cover gasket.
__________________
85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.
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  #29  
Old 11-09-2012, 08:27 PM
Silber Adler's Avatar
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Join Date: Oct 2012
Location: Living on a gravel road in a Red State
Posts: 593
Oh I also did an "injector cleaning by using straight diesel fuel injection cleaner in a pop bottle. After I was finished there was a fair amount of debris and discoloration in the bottle.
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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.
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  #30  
Old 11-09-2012, 10:51 PM
Silber Adler's Avatar
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Join Date: Oct 2012
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Oh once I changed the spin on filter it wouldn't start. I figured out how to run the primer pump (unscrew the white knob then work it in and out) by hand and with my wife cranking it started within a few seconds.
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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.
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