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  #1  
Old 12-02-2011, 01:59 PM
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71 280SE 3.5 What is this part?

What is the device that is connected to the fuel pump, is it some sort of filter?

Thanks,



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  #2  
Old 12-02-2011, 07:19 PM
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Accumulator valve. It's there as a buffer for fuel system surges.
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  #3  
Old 12-03-2011, 05:04 AM
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It's actually a anti bubble container. It is connected in such a way that a small amount of fuel is allowed to flow back to the pump to keep it cool and prevent bubbling .
Djets do not have or need an acumulator.
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Old 12-03-2011, 02:54 PM
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Bubble Container

Do bubble containers go bad? What are the symptoms?

Thanks,

Dave
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  #5  
Old 12-03-2011, 04:03 PM
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no,there is nothing in there,it's like a mini swirl pot . what is your car doing?
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  #6  
Old 12-03-2011, 09:15 PM
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engine trouble

I had posted anther thread, 280se 3.5 engine trouble, my car has was dieing on me. Several suggestions were made, some indicated fuel pump or filter issues, that is why I wanted to know what this was and what it may do if going bad.

Thanks
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  #7  
Old 12-03-2011, 09:24 PM
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In the picture your pump looks fairly recent but I cannot see the filter. normally,a Djet pump set up,the filter is above the pump. Is it out of the pictures range.?? if you haven't changed it,it's time to do it.
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  #8  
Old 12-04-2011, 08:45 PM
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As far as I know, the filter is up front left of the radiator for the 3.5 coupes.

I have the same set up as in the picture for my car (also W111 280SE 3.5 coupe).

Bert
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  #9  
Old 12-04-2011, 11:28 PM
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That's a funky looking fuel pump. I heard that D-Jet fuel pumps are different between the 3.5 and the 4.5. I guess this is what the 3.5 pump looks like.
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With best regards

Al
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  #10  
Old 12-05-2011, 12:19 AM
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re. the filter location,yes thats right ,Same location as on the 6.3 . I had forgotten about that. 3.5 coupes are very rare here ( not as rare as cabs with only 68 RHD being made).
re. the pump,yes Al,the 3.5 has that extra port for the bubble thing.

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