I searched but didn't find my questions so here goes :

1984 300CD , has had some really bad fungus and dirty fuel issues in the past , I bought it as a junker and have been enjoying it ever since .

The initial problem was : horrible smoking , grey/black , @ idle and much worse off idle and HUGE CLOUDS of evil grey Diesel smoke when I stamp on the throttle . I like to run it at 85 MPH most of the time .

Valves all adjusted .

Turbo rebuilt .

New filters , both .

Injectors pop tested , all spray a fine mist (no streams) and pop within a few pounds of each other .

I recently found a 1981 W-116 headed to the crusher and pulled all five delivery valves and pintles , took them home and cleaned them all up , they had some super fine black stuff in them .

Took the delivery valves out of my '84 Coupe and TWO were assembled inverted (!) all are different looking than the photos in the FSM .

# 1 was corroded , I wire brushed it but it still has dull spots so I didn't want to re use it .

Installed all the '81 W116 valves and pintles , the car runs *much* smoother now but still smokes a bit .

When I took the delivery valves out of my coupe I looked in the open IP wells and saw greyish opaque liquid , dirt and one tiny water bubble (!) plus some rusty looking stuff in one of the wells , I cleaned them all out with ether and swabbed inside with new Q-Tips to ensure cleanliness .

So , my questions :

What the hell are the different looking valves from , any way ? .

I hear talk of ' elements' and ' delivery valves ' in the IP , what are the ' elements ' ?? .

All this began when a very helpful member here tried to time my IP but the flow never slowed down and when he took the delivery valve spring out for the drip method , I spotted lots of tiny black bits of crud in there ~
I *thought* I'd killed off the terrible fungus but I see a tiny bit of black crud in the clear plastic intake screen .

Thoughts , comments please .

Car runs very well now, less smoke but still a shoot of grey smoke sometimes when taking off from a dead stop and it's now slightly less powerful ~ still chirps the tires going into second gear but takes longer to reach 100 MPH .

TIA , I'll appreciate all the chatter I read .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

the elements are small pistons that goes deeper into IP and when you take
DV out you actually see upper part of elements.These also can deteriote.
they can be adjusted by releasing two upper screws but it is a operation
that requires pump on the bench and proper Bosch shop.

if you are still unsatisfied with cleaning results you can take all DV's out
and pour some chemicals into openings, clean afterward...but if car runs good meaning that fuel supply is constant and proper...I would not go further with "extermination"

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

Thank you Cho ! .

I always hear ' the elements are leaking on my IP ' and I mis understood what part they were talking about as the leaks always seem to be the top threaded piece .

Question :

How to remove the copper sealing ring ? .

I tried with my American made Dental Pick and couldn't budge it .

Still hoping others will chime in here , i know many have experience with tinkering the IP .

I was a bit concerned about there being more crud further in but so far so good ~ I gave each open valve well a generous spray of starting fluid (Ether) until very clean .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

You might look through the below link and see if you can find some pics.

http://www.peachparts.com/shopforum/diy-links-parts-category/142399-fuel-delivery.html

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84 300D, 82 Volvo 244Gl Diesel

Where the Element is and what it looks like depends on if it is an M or MW Fuel Injection PUmp.

In the first pic on the left you see the Element inside of the Fuel Injection Pump. The shadowed area in the center actually has a Plunger that moves up and down in it and the shiny circular area is the top of the Element Barrel.

In post nuber 6 of this link you see the outer Barrel of the Element in the first pic and the arrangement of the parts in the 2nd pic. But that applies to an M type Fuel Injection Pump.
Delivery valve O-ring problem; car clacking loud

In the 2nd thumb nail pic from the left you see a MW Type Element (don't remove it or it changes the amount of fuel that the Elemtn puts out and you are supposed to re-calibrate it at a fuel inection shop). The Plunger is not shown because that stayed inside of the Fuel Injection Pump when I pulled the Element out.
In this link in post number 6 you see the Plunger still in the MW Fuel Injection Pump and the Element pulled out but it still has the Delivery Valve Holder installed.
Stuck injection pump

Also the Plunger is mated to the outer Barrel of the Element and they cannot be mixed with other Plungers and Barrels. The same with the Delivery Valves.

Removing the Elements from either the MW or M type Fuel Injection Pumps can lead to trouble.

Attached Thumbnails

   

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84 300D, 82 Volvo 244Gl Diesel

THANK YOU ! .

I took a crappy , blurry picture with my iPod and will post it before too long , I'm still working 18 hour days (even Sunday ) but I want you alls to SEE these ' barrels ' (?) as they're different .

That's a long list of reading , I'll get to it bit by bit .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

O.K. ;

Here's my crappy blurry photo :


You can see the one on the left (3 1) is dull from corrosion ~ just -barely- etched , I wire brushed the crap out of it but it's kaputi I think .

Anyway , look at the difference between these and the normal ones encountered :

part # 6 of course .

Can anyone tell me what the other ones are all about ? .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

I don't know which of the Delivery Valve assemblies in the pic are the correct ones for your IP. In fact I have never pulled them out of My MW Fuel Injection Pump.

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84 300D, 82 Volvo 244Gl Diesel

So far everything points to the item # 6 in picture # 2 .

I thank you for at least looking and commenting .

I know there are others here who have done this rodeo before .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

.

I encounter both versions of #6 in MW..no problem if different
but if significantly damaged/rusted or scratched these has to go.


.

__________________
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

THANK YOU ! .

I'm always reading the detailed posts of folks here doing this or that and I knew someone would know .

There seems to be a variety of corrosion on various parts , I've had to discard three of the steel IP to injector pipes because the ball ends had corrosion I was unable to clean off with vigorous wire brushing , they weeped no matter how tight I snugged them .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better