Diesel Shooting Everywhere

[bmeares]

In the rush to change out the fuel filter on my '86 190d 2.5, I inadvertently busted a hole in the fuel line running out of the filter and into the injection system, leaving diesel all over the driveway. I have found 2.5mm fuel line to replace the busted section, but don't know how to attach it to the two threaded end pieces that connect to the filter housing and to the injection system. There are what appear to be brass crimp-on fittings--does anybody have any experience with these or know where I could find some fittings and something to crimp them with--or know where I could buy a line that already has the end pieces attached?

[Bajaman]

Use a heat gun to heat the plastic and remove the old banjo fittings, use the heat gun to reattach to new piece? That's all I can think of doing.

[Diesel911]

I have an 84 300D so I am not sure if what I say will relate to your vehicle.

When I cracked the hard plastic tubing that goes from the Fuel Supply Pump to the Secondary/Final filter I replaced it with regular 1/4 rubber fuel hose and clamps.

I used a Butane Lighter to heat up what was left of the plastic tubing left on the Barbs of the Banjo Fittings to pry it off. After that it is easy to slide the fuel hose on.

I did the same to the other plastic tubing that carries the fuel returning from the IP to the Secondary Filter.

[bmeares]

Thanks for the advice. I took the whole filter housing off to gain access and noticed (when one of the lines tore in half) that the old plastic lines were quite stiff and brittle, which you would expect out of something that has had diesel running through it constantly for the last 22 years.
I didn't have any 1/4" fuel line (which would have fit the banjo fittings perfectly) to re-plumb the lines, but I did have some 5/16" fuel line from a recent boat project lying around. I cut a 2" section out of each of the 2.5mm ID plastic lines and then inserted each end inside the 5/16" line (fits snuggly) and put a hose clamp on each end. This worked great and will hold things together until I get some 1/4" fuel line and have time to re-plumb the system.

[F18]

Originally Posted by bmeares

Thanks for the advice. I took the whole filter housing off to gain access and noticed (when one of the lines tore in half) that the old plastic lines were quite stiff and brittle, which you would expect out of something that has had diesel running through it constantly for the last 22 years.
I didn't have any 1/4" fuel line (which would have fit the banjo fittings perfectly) to re-plumb the lines, but I did have some 5/16" fuel line from a recent boat project lying around. I cut a 2" section out of each of the 2.5mm ID plastic lines and then inserted each end inside the 5/16" line (fits snuggly) and put a hose clamp on each end. This worked great and will hold things together until I get some 1/4" fuel line and have time to re-plumb the system.

Don't use gasoline rated rubber fuel line! You should use Diesel rated fuel line.
There is a difference in the polymer/rubber compound used. Diesel will degrade rubber gasoline grade fuel line. You can get the stuff at NAPA or any other good autoparts store in any length you want.

[bgkast]

Any fuel injection hose will stand up to diesel and biodiesel.

[Diesel911]

Originally Posted by F18

Don't use gasoline rated rubber fuel line! You should use Diesel rated fuel line.
There is a difference in the polymer/rubber compound used. Diesel will degrade rubber gasoline grade fuel line. You can get the stuff at NAPA or any other good autoparts store in any length you want.

I do not the remember the number [I found the number- SAE 30R7 GoodYear] that is on the hose but the 2 biggest AutoParts chains in my area and the other Autoparts in my area all sell GoodYear fuel hose. The fuel hose that they sell is also rated for Diesel Fuel.
If you go to the GoodYear internet site they list the specs and uses for their hose.
However of the rubber hose that is sold as as Vacuum or Heater house should be used for fuel.

Here is the GoodYear site with the spec sheet.
http://www.goodyearep.com/ProductsDetail.aspx?id=10526

[F18]

Originally Posted by Diesel911

I do not have the remember the number [I found the number- SAE 30R7 GoodYear] that is on the hose but the 2 biggest AutoParts chains in my area and the other Autoparts in my area all sell GoodYear fuel hose. The fuel hose that they sell is also rated for Diesel Fuel.
If you go to the GoodYear internet site they list the specs and uses for their hose.
However of the rubber hose that is sold as as Vacuum or Heater house should be used for fuel.

Here is the GoodYear site with the spec sheet.
http://www.goodyearep.com/ProductsDetail.aspx?id=10526

Yep....that is the stuff...it is a dual rated fuel hose....good for diesel and for gasoline. If they are rated for diesel they are usually good for both fuels and should be stamped on the hose. There were some brands that were gasoline rated and should not be used for diesel unless stated.