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Urgent: Can I drive with this kinked fuel line?

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Old 03-31-2018, 04:32 PM
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Alfa40
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Exclamation Urgent: Can I drive with this kinked fuel line?

Hi everyone,

While changing the fuel filter, the fuel line behind it (993.356.065.01) was distorted due to turning the wrong nut. The part isn't quick to come by, can I drive the car in the meantime?

Best,
Alfa40



Old 03-31-2018, 04:57 PM
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Endoman
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You'll soon find out.
Old 03-31-2018, 05:09 PM
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BradB
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I would think you could.
Old 03-31-2018, 05:11 PM
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Alfa40
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Ok, I'll go and put it back together, make sure it doesn't spill and we'll see if it stalls.
Old 03-31-2018, 05:19 PM
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inkatouring
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Two issues come to my mind: (1) Is the metal compromised to the point it will leak and (2) will enough fuel flow through? It doesn't look -- look -- like the metal is compromised but does it feel like it is? Any brittleness to it? As to the second, time will tell.
Old 03-31-2018, 05:49 PM
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BlackSnake99
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I think it would run much like a car with a clogged fuel filter.
Old 03-31-2018, 06:47 PM
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INTMD8
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It doesn't look like it will leak and it will not effect pressure at idle and normal driving but could be restrictive enough to cause a lean condition under high load/rpm due to dropping fuel pressure.

IMO you can drive it normally but I would not run it under heavy throttle until repaired.
Old 03-31-2018, 07:15 PM
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Alfa40
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I can confirm everyone's suspicion: The metal isn't brittle, it does not leak. At idle, I don't notice any problems. Didn't drive it yet. Will take it easy until I have the part. Thanks!
Old 03-31-2018, 07:22 PM
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nine9six
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Originally Posted by INTMD8
It doesn't look like it will leak and it will not effect pressure at idle and normal driving but could be restrictive enough to cause a lean condition under high load/rpm due to dropping fuel pressure.

IMO you can drive it normally but I would not run it under heavy throttle until repaired.
I would say this sounds about right, with the exception of not driving under heavy throttle... I would purposely test it under heavy throttle just to see if it is in any way restrictive. If so, you will simply feel the engine starve for fuel at high RPM.
Old 03-31-2018, 09:45 PM
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Churchill
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Originally Posted by INTMD8
It doesn't look like it will leak and it will not effect pressure at idle and normal driving but could be restrictive enough to cause a lean condition under high load/rpm due to dropping fuel pressure.

IMO you can drive it normally but I would not run it under heavy throttle until repaired.
This is right.
Old 04-02-2018, 12:00 PM
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Mr.Woolery
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Disclaimer (OPINION ONLY)

I am of the opinion that a hard fuel line like this one would already likely be oversized for the application to begin with, otherwise we'd see this line (and all other connected fuel lines) being a required upgrade to flow enough fuel for any forced induction applications which would require significantly more fuel. The kink isn't severe, so I don't think it's going to reduce flow or pressure all that much, and likely not enough to cause any starvation to the engine.

Fuel restrictions happen further down the line in the fuel delivery system (like the injectors).
Old 04-02-2018, 12:31 PM
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Alfa40
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Update: I don't notice it while driving, I don't notice it while getting the revs up either, but I do notice it when starting the car in the morning. It almost doesn't want to start, today it took me 2 attempts and quite a bit of gas to get it to a point where it kept running. Afterwards, all good again. Hopefully that part will arrive soon.
Old 04-02-2018, 04:06 PM
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Mr.Woolery
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Originally Posted by Alfa40
Update: I don't notice it while driving, I don't notice it while getting the revs up either, but I do notice it when starting the car in the morning. It almost doesn't want to start, today it took me 2 attempts and quite a bit of gas to get it to a point where it kept running. Afterwards, all good again. Hopefully that part will arrive soon.
That might be the fuel system working out the air bubbles after the work you did, not necessarily because of the kink in the line.
Old 04-02-2018, 09:47 PM
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Alfa40
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Originally Posted by Mr.Woolery
That might be the fuel system working out the air bubbles after the work you did, not necessarily because of the kink in the line.
Happens on every cold start so far, though.



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