5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHC4 fuel filler neck
Leading reported evidence
Replace fuel pump and fuel lines
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
We replaced the fuel pump and fuel lines with a very high flow fuel pump, enough to support 1000 wheel horsepower on E85.
Leading evidence: 'Replace fuel pump and fuel lines' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace due' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Discussions that contain suggestions
1
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Suggestion · Original poster
The garage have said where the filler neck joins the tank it has smoke coming from so the neck needs replacing due to a bad seal.
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Discussions that contain suggestions
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Suggestion
Wouldnt the better option be running a surge tank.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
A couple pictures show the large fuel lines and the key that I used to duplicate and use all the factory hoses inside the tank except for the seed and return coming through the pick up.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion
I have very large -10 fuel pressure feed lines, -8 return line, and I put a T inside the tank in the -10 pressure line in order to use the factory siphon tubes for the corners of the tank to draw fuel into the basket.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
A couple pictures show the large fuel lines and the key that I used to duplicate and use all the factory hoses inside the tank except for the seed and return coming through the pick up.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I have very large -10 fuel pressure feed lines, -8 return line, and I put a T inside the tank in the -10 pressure line in order to use the factory siphon tubes for the corners of the tank to draw fuel into the basket.
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5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
6SpeedOnline: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261026T183130Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi all I’ve had a smoke test done as I was getting a faint smell of fuel inside. The garage have said where the filler neck joins the tank it has smoke coming from so the neck needs replacing due to a bad seal. Is this a big job as they have quoted me just under £2000? It’s a Carrera 4 thanks
We replaced the fuel pump and fuel lines with a very high flow fuel pump, enough to support 1000 wheel horsepower on E85.
it was a direct fit and replacement for the stock pump in the stock basket.
I have very large -10 fuel pressure feed lines, -8 return line, and I put a T inside the tank in the -10 pressure line in order to use the factory siphon tubes for the corners of the tank to draw fuel into the basket. Basically I duplicated and kept the exact intake for your system how it originally was but its just not filling the basket fast enough unless the tank is full and fuel pours in through the top of the basket also. sucks it dry real quick
If my fuel level drops to below the top of the basket level, I start starving for fuel.
I was thinking of just cutting some holes in the bottom of the basket so it could draw fuel directly from the bottom of the tank but then Im worried about losing fuel during high G force side loads or acceleration. Maybe this wouldnt be an issue though?
trying to figure out what Im missing here from somebody who mightve already had this issue in order to make sure that Im not sucking the fuel basket dry with this big fuel system before it can refill itself when the fuel level is below the top of the basket.
As soon as Im down to about 3/4 of a tank which seems to be about the top of the basket, I start having issues. The car is not very usable if I gotta too off the tank every 45 minutes. Lol
Thanks for any advice on any proven tweaks I could make to eliminate this issue.
A couple pictures show the large fuel lines and the key that I used to duplicate and use all the factory hoses inside the tank except for the seed and return coming through the pick up. It just sucks that basket dry super fast!
Thanks
Wouldnt the better option be running a surge tank. Lift pumps from the OEM tank into surge cell and that should always be topped up as the return goes into it too
its been 18 years since production of 996TT has ended and there still is no quality proven plug n play e85 system for sale. This is why I stay away from tuning e85 cars with experimental fuel system kits, as they all are experiments...
