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PTFE fuel line melted??

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Old Oct 8, 2022 | 08:28 PM
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91 Z28's Avatar
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From: Armstrong BC
Default PTFE fuel line melted??

Hey guys just like the title says, anybody experience a melted fuel line?? 3rd gen car but still same locations. I'm running the hooker turbo setup and I'm finding my fuel pressure dropping significantly after the car warms up.

I've ordered more fuel line to replace my feed and return and a bunch of heat tubing to throw onto my new lines.

Any opinions I'm extremely open to. Thanks guys
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Old Oct 9, 2022 | 03:15 AM
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PTFE melts at < 700F...
Exhaust that's reaching a dull red is about 1000..

All the race cars I've built I've run hard line except for just enough to bridge the gap from frame to powertrain, and that's high temp wrapped Stainless braid.
I work turns road racing / dirt track have for about 20 years.. watched enough car-beques due to push-fit rubber oil lines, and plastic fuel line I just cant do it.
Not much sucks as bad as being in a car when its on fire..





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Old Oct 9, 2022 | 10:30 AM
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Originally Posted by 91 Z28
Hey guys just like the title says, anybody experience a melted fuel line?? 3rd gen car but still same locations. I'm running the hooker turbo setup and I'm finding my fuel pressure dropping significantly after the car warms up.
First, If the pressure is dropping only after it warms up I doubt it's the fuel line because it would have low pressure all the time if the line was compromised in some way.
Second, A return style system will usually keep the lines cool as the fuel flows through it to some extent. I would pull and inspect the fuel line first.

Last edited by LLLosingit; Oct 9, 2022 at 10:36 AM.
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Old Oct 9, 2022 | 01:44 PM
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From: Armstrong BC
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Originally Posted by LLLosingit
First, If the pressure is dropping only after it warms up I doubt it's the fuel line because it would have low pressure all the time if the line was compromised in some way.
Second, A return style system will usually keep the lines cool as the fuel flows through it to some extent. I would pull and inspect the fuel line first.
Yes pulling the lines will be first on the list. After that I'll rip the regulator apart
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