That line should be plugged.

Thanks for the quick reply!

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

There is a special Rubber Cap to cap that end off or the Original has a special Steel Plug that goes into a short length of the Hose.

In my case I made a plug by using a fine threaded Maching Screw slighly fatter than the Hose inside diameter with the threads covered with Silicon Sealant. Simply shove it inside of the new dry length of hose and let it cure before installing it.

Any tupe of Plug in the Hose that will not leak is OK.

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84 300D, 82 Volvo 244Gl Diesel

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?"

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Treetops
06 E320 CDI 127K Miles
87 300TD 231K Miles

99 E300 269K Miles-Sold

Should, that engine is self priming.

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83 SD

84 CD

Keep fuel line, both fuel filters (2 each), wrenches & cutters in the trunk.You'll be happy when you need them.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

I also have an issue with the return line on my last injector (from 4th to 5th) i replaced the line about 4 times now and its still leaking. The braided line is wet all the way not just where the nipples are. is there a trick to this?

I found some generic line from the auto parts store. Slightly smaller. I heated it with the heat gun and pushed it on with pliers.

Probably not recommended, but I tweaked the nipple on the injector out a little bit.

Works good, problem is taking it off.

+1 on carrying some extra.

I've been wondering what that cigar tube return is. I used a normal hose and it's starting to look cigar shaped. Lol.

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

Sixto
MB-less

The nipples barbs might be nicked preventing a proper seal with the return line or in fact cutting into fresh line. Maybe you can file smooth any imperfections. I don't think replacing nipples is a job for mortals.

Sixto
MB-less

It acts as a fuel pressure damper.

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83 SD

84 CD

As a former farmer, I can get that. Definitely necessary as mine is swelling.

I've seen a scratch in the nipple do that before. I would recommend my method, melting a smaller line on. Correct way would be to replace the nozzle body.

I ran out of OE braided and installed NAPA 1/8" between 2 injectors where the braided line was leaking.

I used some pliers that work for hose clamps and was easily able to seat the NAPA line well. Do we have any current data on how well it holds up?

I'll order some of the real stuff to have in case but am just wondering whether I'm apt to have trouble immediately.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

Back in 1992 my lines leaked on the Volvol Diesl that uses the same Injector bodies. I replace that line with some vacuum hose and that lasted about 2 weeks. So I had to buy the real thing from the volvo dealer wich was also the VW Dealer and VW Rabbits used the same hose.

Since 1992 there has been changes with the chemical make up of Diesel Fuel so there is no telling how long a hose not made for the purpos will last.

On the same Car I also replace one of the fuel return hoses with silicion vacuum hose. That worked for over 2 years. However, when I removed it it was rock hard and needed some carful cutting to get it off.

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84 300D, 82 Volvo 244Gl Diesel