944 Turbo Fuel Line Question...

Talk and Tech about turbocharged 924/944/968 cars
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Tom
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gruhsy wrote: Fri May 20, 2022 12:00 pm I might be imagining this but I seem to recall a conversation back in 1994 with the mechanic at MCL Porsche in Vancouver talking about replacing the fuel line in my first 86 to a solid line due to it being safer in addition to the fuel rail recall.
I will have to dig through some old photos of my car from when I steam cleaned underneath it. It was the best cleaning job ever with the unit I used 😎
Yeah, I can't find the TSB yet, but there was a NHTSA recall on the fuel lines back in the day, along with talk of a kit from Porsche to cut the lines in the wheel wells and replace the last section with compression fittings like all the aftermarket kits. I'm guessing that's where the idea came from. It's possible Porsche updates my lines as part of that, though I don't see it in the records for the car, and I don't see that threaded coupler as being any risk at all. Of all the places you might develop a gas leak, that seems pretty low on the list.

On those '86 lines that you have, is the back half of the skinnier return line all metal? If so, any interest in selling it? I could use the new front half, with its new rubber, and use your back piece. Absent rust or corss-threaded couplers, I can't imagine the hard lines would 'wear out' at all?

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gruhsy
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It’s metal yes.

You can have it.

I will clean it up tomorrow

Do me a favor and reach out to me on here so I don’t forget lol

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Tom
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gruhsy wrote: Fri May 20, 2022 7:32 pm It’s metal yes.

You can have it.

I will clean it up tomorrow

Do me a favor and reach out to me on here so I don’t forget lol
Sorry, forgot to respond, but that would be awesome, thank you! I'll PM you to cover costs and such. :)

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Tom
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In my quest to figure out what happened with the return fuel line, I found an old Pelican post where someone said Porsche switched out the one-piece fuel return pipe for a two-piece unit. If so, I'm guessing that Porsche updated one old part number in PET with all the parts for the 2-piece set up, but didn't leave any evidence of the update. There looks to be a TSB 2-9001 re fuel lines, but I can't get my hands on that, and the timing makes me think it relates to the NHTSA recall over the rail-to-damper jumper hose (90V061000), since they are both dated in April, 1990. Anyone have access to that TSB?

But I also found this curious receipt showing an intermittent fuel leak with work description "K. T. 832" Anyone have any idea what K. T. meant? There's another with K. T. 356.
kt832.jpg
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Just figuring out a safe packaging method now Tom.

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Late to the party on this one. I have two '86 turbos. Tom did you need any more pics or did you find what you needed?

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Actually, I'd love more pictures of 1986 fuel lines under the car, with a focus on whether the two lines (feed and return) are one continuous tube all the way to the back fuel filter area, or if one or both of them are two-piece units with a coupler about half way back. The feed line on my car has the coupler shown in PET, but the smaller return line is one piece all the way to the back, and neither PET nor the dealer seem to have any reference to my one-piece line. I assume my car did come this way from the factory, but am looking for other '86's that are like mine to confirm....

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Here are some pictures of my white car. It has less miles on it and is more likely to be original. I don’t see a coupler.
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Thank you for those pictures! So far, my car is the only car I've seen with a two-piece feed line and a one-piece return line. I wonder if the dealer changed one early on, but not the other. There are some receipts referencing fuel leaks with unspecified 'campaign' repairs. I'll keep digging though. If Porsche updated the parts, then 'somewhere' there must be a TSB or something....

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my red 86
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