I just did all viton injector return lines on my engine, now im down to the last injector, the little plug, but the viton hose being softer i wander if theres a secret on how to plug it so it will stay? maybe a small clamp?
Anyone tried this?

There is a metal plug that should go into the hose.

Yes on the mervedes benz hose it is firm and the plug holds up well, but this stuff its so flexible.
Is there a small hose clamp that would clamp a return line?

Sorry, I misread your first post.

If it says on the injector, the plug should be no problem. The plug is the insert used in the injector minus being hollow.

A small ziptie would work very well if you're that worried about it.

i'm still wondering what that word means

__________________
1985 300SD
1998 Jetta TDI
Previous: lots of diesel VW's, MB's, KW's, Pete, Freightliner


Walking isn't a lost art: one must, by some means, get to the garage.

I have Viton on all three cars including the final plug and there's been no sign of the plug working loose. However, I don't recall (during installation) the Viton being "softer." Are you sure you bought real Viton? What was your source and all that?

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Viton can stand up to bio diesel, whereas rubber does not, over the long haul.

__________________
83 SD

84 CD

I took the metal plug and put it in the viton hose last year. Seems to be holding up.

__________________

Where is a good place to buy bulk viton line the right ID for the return circuit? Also, to run bio effectively, is the only modification one needs to do is to use viton return lines? What about the metal lines running the length of the car underneath, are they compatable with b100?

__________________
Regards,
Ian White

1995 E300 Diesel w124 OM606
2014 E550 w212 M278 biturbo

2001 BMW 740i E38 M62 (past)
1981 300SD w126 OM617 (past)

What other plastics are biodiesel resistant?

I've found some other fluoropolymers that are in roughly the same size. Mainly FEP and PFA (seem to have appropriate teflon-like chemical resistance and they're rated at high temperatures)

One is FEP with a 3.2mm ID and two different ODs, 4.8mm and 6.4mm. The max working pressures at 70F are 289 PSI and 450 PSI (which seems to be overkill). Anyone know the reasons for recommending the thicker wall tubing? 289 PSI is overkill, and the price difference between the two wall thicknesses is very large (for 25ft - $25 versus $73).

Links: FEP tubing, 1/8"ID x 3/16"OD
FEP Tubing, 1/8"ID x 1/4"OD

$1 a foot doesn't seem to be too bad of a deal...

__________________
1982 240D, sold 9/17/2008
1987 300D TurboW124.133 - 603.960, 722.317 - Smoke Silver Metallic / Medium Red (702/177), acquired 8/15/2009
262,715 and counting

I am using stock plug with the viton now but it seems a little flimsy, but then again it is flimsy even on rubber hose. If a little old on the last injectors the plug moves when touched and fuel can spray.

member J.A. Davis offers a Viton Kit for a very reasonable cost,
except for this one item.

It Ain't never gonna leak/seep:

Attached Thumbnails

   

__________________
'84 300SD sold
124.128

Thats what i need..

use a screw that has a slightly larger diameter than the inside of the hose.

__________________
Current
2006 E320 CDI, 57K bought at 67K "Liesl"
1986 190E 2.3-16, 198K bought at 56K "Brigitta"
1987 300TD (Chuggin Along), 292K "Friedrich"
1995 E320 Wagon, 200K "Louisa"

Past
1987 300SDL, (sold) 125K, bought for 1$ "Kurt"

there are two rubber lines from the fuel tank to the hardline underneath the car that need replaced. there are also two rubber lines under the hood. One that feeds the IP and the return hose from the secondary fuel filter. word of caution after replacing these lines replace your filters. (i speak from experiance)

__________________
1987 300D 180k
1985 300SD 330k Helga
1992 300D Lola 269k- Sold
1986 325 coupe Bessie >300k Original engine(ODO Broke) sold
2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it