I moved my wiring harness to the side and discovered what appears to be a hose connection with nothing attached or close by. It's about 1/2" barbed connector on the right side of the head between the 4th and 5th injectors. I can't see anything hanging, or an obvious "other end" where a hose should go. Does anyone have any idea what should be attached there?

I might know what hose you're talking about, is it a CIS 104 or fuel injected 104? I know theres some 1/2in hoses on the CIS one,

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99 Jetta Mk3
07 Jetta Mk5
89 300E W124
10 E 350 W212
08 C300 W204
Benz's aren't mine

Can you take a picture?

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE

It's fuel injected, and I can get a shot of it tonight.

What year is it????????????????

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A Dalton

Boy, the make, model and year would have been nice to include, wouldn't they? Doing two posts at a time when brain dead...
93 300E 2.8, and here's a picture.

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OK.. "93/104 is HFM/SFI ..wit a fuel rail. I do';t see the hose you are talking about , but if it is on the LEFT side , it may be either the Purge Valve or the FP regulator.

You mention Right side. Do you really mean right side?

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A Dalton

Driver's side. In the picture it's at 335 degrees from my thumb, right between the two injectors.

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Driver side is LEFT.

Anyway, nothng goes there .I think that is assembly fixture at manufacture..
I have one right here and it is vacant..

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A Dalton