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Thread: Engine Compartment Fuel Line Routing '71T Coupe

  1. 06-07-2015, 11:42 AM #1
    Stretch32
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    Engine Compartment Fuel Line Routing '71T Coupe

    After I got my CV axles back together yesterday and took the car for a quick drive I noticed a very strong gas smell coming out of the vents (heat was on a little). After shutdown I looked in the engine compartment and found a significant puddle of fuel on the left side around the hard line that comes from under the car. Quick trouble shooting showed the soft braided line had cracked(?) and was dripping fuel where it makes a sharp bend from the hard line to an inline metal fuel filter (before heading to the hard line that feeds the carbs). I've never seen a braided fuel line do this before and the lines are only about a year old so I'm thinking I've got something set up wrong.

    Is there a different way I should have this fuel line routed and is a metal inline filter in this location an acceptable addition? I've been running this for a few years with no issues so I'm not too sure what happened. Looking at the PET diagrams it appears the factory simply ran a braided rubber line from the hard engine bay inlet line to the split tubing for the two carbs to feed from.

    Any thoughts would be appreciated.

    Stretch

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  2. 06-07-2015, 11:50 AM #2
    classic
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    Your setup looks fine. My only suggestion is to fit Norma clamps to your fuel lines, rather than the spring ones you have fitted at the moment.

    When you fit the hose, don't force it on, heat it with hot water to make it malleable.
    Tony
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  3. 06-07-2015, 02:09 PM #3
    Fishcop
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    The hard line on my 69T actually corroded through where it passes through the chassis rail - have a good poke and prod in this area.
    John Forcier
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  4. 06-07-2015, 03:03 PM #4
    Stretch32
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    It's the soft line for sure. With the ignition switch in run (engine not running) and the fuel pump going you can clearly see the fuel start to bead up and weep from the soft braided line where it makes the bend. I'm not sure how this happened since the lines are fairly new and I can't imagine they'd have already dried and cracked. I drive the car a lot, almost daily, so I'm pretty lucky I didn't start a fire during my drive yesterday.

    Stretch
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  5. 06-07-2015, 03:46 PM #5
    edmayo
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    Leaded or unleaded gas,,,,,and who is the supplier of the fuel line?
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  6. 06-07-2015, 04:01 PM #6
    Stretch32
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    Ed,

    It's unleaded gas that I buy locally, 91 octane with no alcohol added. I bought the line from Parts Klassik and I'm pretty sure it's German. Was planning to buy some more today since I've run out of the smaller 7mm stuff.

    Stretch
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  7. 06-07-2015, 07:18 PM #7
    edmayo
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    Just curious whether it might have been alcohol in a poor quality fuel line,,,,sounds like it was neither.
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  8. 06-07-2015, 08:16 PM #8
    37yrold911
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    what's wrong with those spring clamps?
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  9. 06-07-2015, 10:50 PM #9
    classic
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    The sharp edges can cut the fuel line.......Norma clamps have a turned edge to prevent this.
    Tony
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