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Started by Labninja, 07 December 2023, 08:03 AM

Labninja

1976 450SE I have a high idle problem. I was looking around for vacuum leaks and fixed a few but I kept hearing a leak. I found that the adjustment hole between the fuel distributor and the air inlet was pulling air in.

After watching many videos I saw a few that had plugs. Mine didn't.  Is there supposed to be a plug? It looks threaded, if it is supposed to be plugged can someone tell me the bolt size/thread it uses.
Thanks

daantjie

Yes it should have a threaded little bolt in there.  I don't have the size but as a stop gap you can just put a snug fitting silicone type cap over it to seal in the meantime.
Daniel
1977 450 SEL 6.9 - Astralsilber

rumb

#2
 Comes from factory plugged so you dont mess with it. When you eventually need to adjust  use
009975986
Little blue cap made for this purpose.
'68 250S
'77 6.9 Euro
'91 300SE,
'98 SL500
'14 CLS550,
'16 AMG GTS