Fuel injector return line

[howards@howards]

What size is fuel injector return line. My has no clamps ?? were can I buy it aftermarket. Thanks

[vstech]

2mm I believe.
1/8" tygon weed eater fuel line works well...

[Lycoming-8]

What really worked WELL was the system the W-115 diesel used. All metal between the injectors and only the crappy rubber hose between the last one and the main line back to the tank. MB really dumbed it down for the 123!!!

Drove the 115 220D/8 for twenty years and never had leak one in the fuel system. Now thats durability.

[sixto]

Originally Posted by vstech

2mm I believe.
1/8" tygon weed eater fuel line works well...

I had a return line blow on me yesterday. I'm waiting for braided line to arrive by mail. Meanwhile, I got some garden tool fuel line, didn't say Tygon on the package though. This is the situation after 5 minutes of idling. You can see the bluish fuel and air gaps in the line. Does it stay this way or does the air eventually bleed away?



Does Tygon line have a yellow-orange tint?

Sixto
87 300D

[treetops]

Originally Posted by sixto

I had a return line blow on me yesterday. I'm waiting for braided line to arrive by mail. Meanwhile, I got some garden tool fuel line, didn't say Tygon on the package though. This is the situation after 5 minutes of idling. You can see the bluish fuel and air gaps in the line. Does it stay this way or does the air eventually bleed away?

Sixto
87 300D

Hi folks reviving an old thread for my question.

I just replaced my return lines on the 87 300TD with the aforementioned tygon hose and wanted to know the answer to this question too, "does the air work its way out of the return lines?"

[sixto]

Originally Posted by treetops

Hi folks reviving an old thread for my question.

I just replaced my return lines on the 87 300TD with the aforementioned tygon hose and wanted to know the answer to this question too, "does the air work its way out of the return lines?"

Two years later the line is still dry and flexible and the bubbles are still there.

Sixto
MB-less

[toomany MBZ]

3.2 mm, try using the button at the top of the page.

[Diesel911]

National Auto Parts (NAPA) sells the real thing.

Where to buy fuel return hose
Diesel Injector return lines, where to buy? - PeachParts Mercedes ShopForum

The Thread with the part numbers
fuel return line replacement part - PeachParts Mercedes ShopForum

Viton Injector return Hose part numbers
VITON Return line number - PeachParts Mercedes ShopForum

From my notes:
Injector return hose plastic tube
any lawnmower/chainsaw repair shop should have hose that will work too.
I bought a 50' box of 1/8" tygon clear fuel hose and the stuff holds up for about 3 years.
cost me like 15.00
The brand I used is Oregon, it is a Tygon fuel hose.

All sorts of info can be found here:
DIY Repair Links
DIY Links by Parts Category - PeachParts Mercedes ShopForum

PeachPartsWiki: Do It Yourself Articles - Mercedes Vehicles

[wilburtual]

I just ordered some from Pelican Parts (i believe the new sponsor of this site..) its only $4 per meter. they also have the end plug for the last injector.

605-078-05-81-M20 $4.00
Diesel Return Hose 3.2 X 1.9 mm For Diesel Injectors (Sold by the
Meter), 240D M616.912-, Brand: Cohline

403-070-01-55-M21 $2.25
Diesel End Plug, 240D M616.912- Brand: Contitech

i ordered yesterday and they already shipped it out today for tomorrow delivery!

[vstech]

Originally Posted by wilburtual

I just ordered some from Pelican Parts (i believe the new sponsor of this site..) its only $4 per meter. they also have the end plug for the last injector.

605-078-05-81-M20 $4.00
Diesel Return Hose 3.2 X 1.9 mm For Diesel Injectors (Sold by the
Meter), 240D M616.912-, Brand: Cohline

403-070-01-55-M21 $2.25
Diesel End Plug, 240D M616.912- Brand: Contitech

i ordered yesterday and they already shipped it out today for tomorrow delivery!

... in my yard I order it by the roll... my last order (from fastlane then) from phil was for 25' I'm nearly out of it...

[Diesel911]

Originally Posted by vstech

... in my yard I order it by the roll... my last order (from fastlane then) from phil was for 25' I'm nearly out of it...

Yes, it is a good idea to keep some extra on hand in your trunk as you can easly leak off enough Fuel that would cost more than the extra Hose when one the lines leak.
It is also good for use on other projects.

[wilburtual]

Originally Posted by Diesel911

Yes, it is a good idea to keep some extra on hand in your trunk as you can easly leak off enough Fuel that would cost more than the extra Hose when one the lines leak.
It is also good for use on other projects.

so true! it will work in a pinch for vacuum line too! my 240 snapped a vac line once and wouldnt shift out of 2nd gear..i pulled over, threw a bit of 1/8" hose i had with me on there and i was back on the road! hmm, now that i think about it, i dont think i ever went back and replaced that hose with actual vacuum line... i guess it worked pretty good then!

[gatorblue92]

Originally Posted by wilburtual

I just ordered some from Pelican Parts (i believe the new sponsor of this site..) its only $4 per meter. they also have the end plug for the last injector.

605-078-05-81-M20 $4.00
Diesel Return Hose 3.2 X 1.9 mm For Diesel Injectors (Sold by the
Meter), 240D M616.912-, Brand: Cohline

403-070-01-55-M21 $2.25
Diesel End Plug, 240D M616.912- Brand: Contitech

i ordered yesterday and they already shipped it out today for tomorrow delivery!

That's good... When I needed it it wasn't available so I had to get it from the dealer. Luckily my dealer goofed and ordered me twice as much as was needed for my 240D so the parts guy gave me the excess and I had just enough for my 300D.

[wilburtual]

as i mentioned, i ordered from pelican parts yesterday afternoon - and it just arrived! thats some fast shipping. its my first time ordering from them, im glad to see they are on top of things. i look forward to their new and improved catalog they are speaking of, i'll definitely be ordering from them again!

[Biodiesel300TD]

Originally Posted by howards@howards

What size is fuel injector return line. My has no clamps ?? were can I buy it aftermarket. Thanks

They don't clamps if you buy the correct hose.