fuel return line

T4spanish · Aug 13th, 2020, 22:03

Hello, I see many topics in which they speak that they have a fuel return line mounted on the modified T4s, and I don't really know how it is, I would like someone to tell me how I could mount it in my car if it is beneficial, and where it is the profit, thanks

clarkey1984 · Aug 14th, 2020, 10:01

The T4 doesn't have a fuel return, what it has instead it 2 fuel pressure regulators that constantly adjust the flow so that there's nothing that needs to be returned to tank, this is in order to keep fuel temperatures down I believe, which is beneficial for performance.

T4spanish · Aug 14th, 2020, 14:46

But in my car I only see a pressure regulator on the rail of the injectors, what is the other one? If so, no return line is necessary, I understand

T4spanish · Aug 15th, 2020, 11:32

possibly phase II has two pressure regulators, but phase I seems to only have one, so I want to be able to make a return line, but I would like to know someone who takes it where it connected

clarkey1984 · Aug 15th, 2020, 16:05

It can't need one though, otherwise it would have one from the factory right?

T4spanish · Aug 15th, 2020, 19:26

The stock car should not need, but I have mine with 306 hp and I think it could benefit you

clarkey1984 · Aug 16th, 2020, 09:46

I think the 2nd regulator is in the tank attached to the fuel pump and sender unit assembly.

T4spanish · Aug 16th, 2020, 21:57

ok thanks, I'll investigate

Aug 13th, 2020, 22:03	#1
T4spanish I've Been Banned Last Online: Apr 14th, 2023 00:08 Join Date: Jun 2019 Location: Huelva	fuel return line Hello, I see many topics in which they speak that they have a fuel return line mounted on the modified T4s, and I don't really know how it is, I would like someone to tell me how I could mount it in my car if it is beneficial, and where it is the profit, thanks

Aug 14th, 2020, 10:01	#2
clarkey1984 Premier Member Last Online: Apr 13th, 2022 09:41 Join Date: Jul 2014 Location: Beccles	The T4 doesn't have a fuel return, what it has instead it 2 fuel pressure regulators that constantly adjust the flow so that there's nothing that needs to be returned to tank, this is in order to keep fuel temperatures down I believe, which is beneficial for performance. __________________ 02 V40 T4 S, "Sargent silver" she's back!

Aug 15th, 2020, 16:05	#5
clarkey1984 Premier Member Last Online: Apr 13th, 2022 09:41 Join Date: Jul 2014 Location: Beccles	It can't need one though, otherwise it would have one from the factory right? __________________ 02 V40 T4 S, "Sargent silver" she's back!

Aug 16th, 2020, 09:46	#7
clarkey1984 Premier Member Last Online: Apr 13th, 2022 09:41 Join Date: Jul 2014 Location: Beccles	I think the 2nd regulator is in the tank attached to the fuel pump and sender unit assembly. __________________ 02 V40 T4 S, "Sargent silver" she's back!

Aug 14th, 2020, 14:46	#3
T4spanish I've Been Banned Last Online: Apr 14th, 2023 00:08 Join Date: Jun 2019 Location: Huelva	But in my car I only see a pressure regulator on the rail of the injectors, what is the other one? If so, no return line is necessary, I understand

Aug 15th, 2020, 11:32	#4
T4spanish I've Been Banned Last Online: Apr 14th, 2023 00:08 Join Date: Jun 2019 Location: Huelva	possibly phase II has two pressure regulators, but phase I seems to only have one, so I want to be able to make a return line, but I would like to know someone who takes it where it connected

Aug 15th, 2020, 19:26	#6
T4spanish I've Been Banned Last Online: Apr 14th, 2023 00:08 Join Date: Jun 2019 Location: Huelva	The stock car should not need, but I have mine with 306 hp and I think it could benefit you

Aug 16th, 2020, 21:57	#8
T4spanish I've Been Banned Last Online: Apr 14th, 2023 00:08 Join Date: Jun 2019 Location: Huelva	ok thanks, I'll investigate

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