Mercedes W124 pierberg 175 cd carb repair kit anyone know where you can get one?

[robbomerc]

Hi . I have a W124 1989 saloon which is a 200 carb version with a pierberg 175cd carb . Does anyone know where I could get a carb repair kit . It is a poor hot starter and poor hot idler . It starts well cold but is rubbish at starting / running when hot . I had it looked at by a Mercedes’ dealer. £200 to tell me it needed a carb specialist to look at the carb!1
it seems the diaphragm in the choke is cracked so I need a new one . I can’t find one available even at autodoc.de . Any ideas . It’s a lovely car only 58000 miles but it won’t run . I paid a lot for it but it makes me think I may have to scrap it

 

[grober]

W124 Pierburg / Stomberg Carburettor Bits and Advice Needed | Engine

First post - here goes. I'm the proud owner of a low mileage 1987 200 T with an unusual carb. Had it 6 months or so and want to keep it for a long time as a daily driver. Gradually replacing bits that have failed, car having done v few miles in the last 20 years just sat in a garage. On to the...

forums.mbclub.co.uk

 

[robbomerc]

Thank you . I have e mailed southern carbs , and tried to order from ruddies Berlin but no joy .

 

[grober]

Jens-Peter Adam Vergaser-Service

Wir halten über 6.000 verschiedene neue Ersatz- und Zuberhörteile, ca. 500 neue Vergaser sowie eine große Anzahl gebrauchter Teile für Sie am Lager. Unser Bestand wird ständig erweitert.

www-vergaserwelt-de.translate.goog

 

[robbomerc]

Thanks I managed to order a kit from Classic Mercedes in Poole . will see how that goes . Cheers Rob

 

[merc85]

I had that problem with a w201 190,

The diaphragm was split, So i got some tyre vulcanizing fluid and repaired the split with a small piece of rubber job done ran like new lol.

 

[robbomerc]

I have the auto choke diaphragm, does anyone know how to remove it ? It is sort of triangular in shape with a metal projection with a hook on the end . When I try and remove it the hook is catching on something . Thanks

 

[robbomerc]

Here

 

[robbomerc]

The new one

 

[Bellow]

I have the auto choke diaphragm, does anyone know how to remove it ? It is sort of triangular in shape with a metal projection with a hook on the end . When I try and remove it the hook is catching on something . Thanks

Does sliding it sideways - probably towards you when you are positioned as you were when you photographed it - not release it?

 

[robbomerc]

No . I think you have to take the auto choke off . Jeez

 

[robbomerc]

So ongoing Blooming saga . I have managed to buy a few carb rebuild kits plus an old carb . Jeez these things are hard to work on . Full of biodegradable rubber diaphragms and hard to get to . I took it to my Mercedes’ dealer and they charged me £200;to tell me the carb was @@@@@@ thanks I knew that . I took the old spare carb apart and springs flew everywhere. I have found a local chap who may be able to help. I have bought 2 carb kits and a Haynes carb manual to give him to work through . Interestingly I have rung John Haynes multiple times for help but they have a 9 month waiting list and do not return my calls . Shame as I used to put all my cars through them . Seems they favour modern Mercedes now

 

[optimusprime]

Have you looked in to updating it with a newer type carb ?

 

[robbomerc]

If all else fails then yes certainly . Has anyone any idea which carb will fit ?

 

[grober]

Suitable replacement would be something like Weber downdraught twin progressive choke like a 32/36 DGEV-same carburettor comes in a variety of forms you want to get a manual choke version if possible. Would need re-jetting of course and possibly a new inlet manifold or adapter. E.G.
WEBER Carburetors distributed by Redline : Mercedes Benz this is for an old twin carb setup on an older model but they may be able to advise? The Ford Pinto 2 L engine [Capri and later Cortinas] came with such a carburettor so you might be able to pick one up reasonably cheaply

WEBER 32/36 DGAV/DGEV parts diagram

WEBER CARBS, Carburettors, Jets, Emulsion tubes, Conversion Kits, Air Filters, Linkages, Rebuild Kits

www.carbparts.eu

 

[grober]

An intro to weber progressive choke carbs- lots of stuff on youtube about jetting etc

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[robbomerc]

many thanks for this

 

[Bellow]

A down draught carb will likely be tight for bonnet clearance and a manifold adaptor awkward to arrange. An 1.75'' SU or Stromberg would be a better match but they are hard to come by and the jetting is in the needle (profile) which has to be reasonably close but very difficult to identify by its code number and likely even harder to obtain. Even the throttle linkage could be a PITA and if as I suspect, there is a cable from it to the auto gearbox there is an additional complication as losing that synchronicity usually destroys auto boxes.

If you have the repair kit with replacement diaphragms and gaskets/seals I can't see why you can't rebuild your own carb. Just dissemble it carefully noting where all the parts go and re-assemble accordingly. There shouldn't be many springs (one big one above the piston but I can't think of any other internal ones).
The last of the carb rebuild expertise BTW, resides in garden machinery repair shops....

 

[grober]

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[grober]

A down draught carb will likely be tight for bonnet clearance and a manifold adaptor awkward to arrange. An 1.75'' SU or Stromberg would be a better match but they are hard to come by and the jetting is in the needle (profile) which has to be reasonably close but very difficult to identify by its code number and likely even harder to obtain. Even the throttle linkage could be a PITA and if as I suspect, there is a cable from it to the auto gearbox there is an additional complication as losing that synchronicity usually destroys auto boxes.

If you have the repair kit with replacement diaphragms and gaskets/seals I can't see why you can't rebuild your own carb. Just dissemble it carefully noting where all the parts go and re-assemble accordingly. There shouldn't be many springs (one big one above the piston but I can't think of any other internal ones).
The last of the carb rebuild expertise BTW, resides in garden machinery repair shops....

You are correct about bonnet clearance- might need a new manifold. The beauty of these WEBER carbs is there's lots of information about setting them up in English whereas much of the info on Mercedes carburettors is in German! It's unfortunate that Mercedes never imported the later carburetted cars into the states-by that time it was easier to achieve better omissions using fuel injection. Had they done so I'm pretty sure someone in states would have produced an upgraded carburettor set up for these cars.
Anyone who can produce a correctly jetted Weber 32/36 kit for these later 4 cylinder cars would be highly popular on the side of the pond.