no im not the one with the wagon.. i have a sedan..i just joined this post to ask how different it would be in a sedan.. i wish i had a wagon but cant get everything in life

http://www.peachparts.com/shopforum/diesel-discussion/105304-biobor-what-why-do-i-need.html#post723857

http://www.peachparts.com/shopforum/diesel-discussion/115952-filters-fungus-biocide-etc-post823378.html#post823378

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brandon is this the same for a w126?

w126 is right in front of the drivers side rear tire. Its up near where the last of the suspension compenents are....probably a good foot or 1.5 in front of the tire.

Its UP in there...a few inches...so you have to sorta hunt.

i cant seem to find that bellshaped thing...it comes off of a line coming out of the tank correct..the driver's side bottom right? All I have soming out of there is a line..that goes to some rubber jobby then goes into another line then to a metal line that goes upfront..

I will try to take some pictures of mine tomorrow.
Too darn tired at the moment.

go back one page i posted a pic of mine on my saloon ( sedan.. i like using saloon instead of sedan)

Regarding my original question regarding sluggish fuel delivery...this occurred slowly over time...sluggish accelleration on highway, skipping at idle, then difficult starting. Now the car will not start. The car "catches", want to start, but just wont go...exactly as if it is fuel starved. I checked these possibilities...changed fuel filters (in case of possible clogged filters), disconnected fuel lines leading to tank and put hoses into a can of fuel, as if doing the diesel purge routine (in case of possible clogged tank screen). Still, car won't start. I am now thinking that fuel pump is bad...when car was running but sluggish, the fuel going through the small pre filter was moving very slow....even when reving....in the past, when running properly, I remember that fuel surges through here quite rapidly...so something is prohibiting fuel movement...thus fuel pump.

Questions...I understand that the housing on the IP that holds the hand pump is the fuel pump. In the past I have replaced the hand pump only, but never the whole housing...does this thing actually circulate fuel through the IP?? Or is it just a housing for the hand pump. I see in the MBZ manual that this "fuel pump" is easily removed and replaced, but I see note threads on it in this forum, and I see no "fuel pump" in fastlane parts.

Any suggestions, or clarifications on fuel pump problems??

Thanks,

mark

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1984 300TD Wagon, 407,800 mi (current daily driver)
1985 300DT Sedan, 330,000 mi (gone to that great autobahn in the sky)

this is what i have coming out of the driver's side back of my tank





I didnt see any bellshaped thing. Also, my wheel was difficult to get off..apparantly rusted inplace. I had to beat it with a rubber mallet (from the back) to get it off.

Rear pads looked good still.

Keep following that line and you will find where the bell is

Its not "at" the tank...its remote.

that line goes into a metal line...ill have 2 follow it

That is the diesel fuel LIFT PUMP, not fuel pump.
No, it does NOT circulate anything through the body of the injection pump, it lifts fuel through filters to the injection pump.


PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1984 Mercedes Benz 300TD Turbo Wagon
Part: Primer Pump Assembly
D2011-13591 Primer Pump Assembly Bosch IN STOCK $150.56

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1O318DB3D1O510VCBU&year=1984&make=MB&model=300-TDT-001&category=D&part=Primer+Pump+Assembly

The horn deal on a w126 is on the end of a metal line yes...but if that leads to one of the lines that goes all the way forward to the engine bay...then thats not it obviously

FYI...

w126 the bell shaped thing is right near the driver's side rear subframe mount...ull see it.

right between the two piece of metal kinda forming a Y e---pic:
it connects to that black valve thing in my post above..

Mark ;

Resist the gurge to blindly toss $$ and parts at it , or take things way too far apart before making a simple test and temp. repair to get it runnng .

The good hint is : it took a long time coming , you've been nticing problems worsening over time .

Take off the hose in the engine compartment leading to the pre filter and try to blow back into the steel line ~ use a bicycle pump if needs be , or whatever you use to fill footballs , soccer balls etc. , untill you hear gurgling in the tank . then re-connect and use the hand pump on the IP to pime the system , if that fixes it , your in tank screen is likley clogged up with gunk , it's easy to clean but you'll need a large drain pan , some clean jugs for the fuel you'll drain out , lots of rags or old carpet as you'll most certainly spill out some fuel and a 46 MM socket , 6" enxtension and ratchet to get the screen out of the tank .

Please note that afgter blowing the screen clear you can drive but you
-realy- should clean the screen by removing as the accumulated gunk will once again clog up the screen in time and it's not good for the IP to work so hard sucking the fuel .

-Nat

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-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