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Author Topic: 300 C Carburetor  (Read 55 times)

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Offline mb53nut

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  • Location: USA, Illinois
  • Year_Model: 1953 170Vb, 1956 300C
300 C Carburetor
« on: March 08, 2019, 08:07:37 PM »
Hello,

Can someone please help me identify the carburetor part circled in red in the attached pictures? Do you know what it does? I'm missing this part on my carburetor and I have troubles starting in cold weather. Could it be the reason?
I was unable to find it in the Niemoller catalog parts diagram.

Thank you, Peter

Offline Charles Adamson

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  • 1951 220 Sedan
  • Exterior Color: Black
  • Interior color: Brown
  • Location: Texas USA
  • Year_Model: 1951 220
Re: 300 C Carburetor
« Reply #1 on: March 08, 2019, 11:30:47 PM »
Peter

This was found in group 7.
The picture is at the bottom of this page.

Charles Adamson





































































































































































































































































































































































































































« Last Edit: March 08, 2019, 11:36:53 PM by Charles Adamson »

Offline CraigS

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Re: 300 C Carburetor
« Reply #2 on: March 09, 2019, 05:39:44 AM »
I think what you have is a carburetor from a 220s fintail. I am pretty sure that operates as a one way valve on the lead carburetor to prevent fuel flowing back to the tank.
« Last Edit: March 09, 2019, 06:02:44 AM by CraigS »

Offline TYPE300

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Re: 300 C Carburetor
« Reply #3 on: March 09, 2019, 04:36:49 PM »
Craig is correct twice,....They are 220s carburetors and the circled items are responsible for fuel return. The lower circled item with the arm pointer is attached to the accelerator pump. This sprays fuel with the slightest touch of the accelerator pedal. If the diaphragm within it are dry or cracked,..you will simply have hesitation problems.

The only thing that you should check is the starting aid diaphragm. It's located under the triangular metal piece at the top of the carburetor.

I have the parts if you need them.