Is the last injector return line supposed to be plugged? I looked under my 220d hood today and the last injector return line was a short stub that was open and squirting fuel. On my 123 it has a plug in it. Can I just seal it off somehow like with a screw?

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sophie2
1987 300TD, 168K
1981 300D 220K
1968 250S W115 Diesel Converted,
2006 E320 CDI
2006 Yanmar 3YM30 / Vindo Sloop
29 Vintage Bicycles

yes.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

It sounds like the hose swelled and spat out the plug. Probly anything is better than nothing to block it but should replace the piece of hose too. I can send you a spare bit of bypass hose if you need it.

Allot of fuel can come out of an unplugged return line. Yesterday I fueled up, checking under hood, of course, got home, went in the house, came back out an hour later and theres a big puddle of fuel under the car. It was leaking at a return hose connection on #3 injector (hardest too get to) . The car was stopped and fuel was running out the return hose when I pulled it off the injector. I guess I have never changed return lines on a 123 with a full tank of fuel I can imagine how much would be squirting out when under way.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

I had the return hose come off on the highway. Stopped after smelling fuel for a while, found the hood pad soaked and the hose on top of the head. Whadda mess!

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Gone to the dark side

- Jeff

A broken injector return like can quickly pump out 1/4 tank before most people will notice it.

I have heard that theres just as much fuel "returned' as burned.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

403 070 00 55 should be the part number. Less than $5.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

BTDT! It started leaking on a trip while about 500 miles from home. I managed to cobble together a patch and then bought the cute little piece of hose with plastic plug. That was about 1988, I think they have a one piece plug now.

I probably lost a quarter tank of fuel before figuring out what was going on. I am quite sure that a LOT more fuel comes out that plug than is burned in the engine, that is if it is totally gone and not just dribbling.

Buy two - always carry one as a spare. That way you'll likely never need it. Works for me.

Len
'83 240D 346,000 miles original owner