fuelling issue- can you give me advice
06-22-2007, 11:26 AM
#1
Staging Lane
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fuelling issue- can you give me advice Just want to make sure that i have this right.
i have an F-body '02 LS1 with an LS6 intake. i "seem" to have a fuel retun line from the engine. Does this therefore mean that i do not need a pressure regulator and just need to buy and in line pump?
what terms should i seach for on Summit to find suitable fuel pumps. I just seem to find thousands and thousands of fuel pumps for carbs!
i have an F-body '02 LS1 with an LS6 intake. i "seem" to have a fuel retun line from the engine. Does this therefore mean that i do not need a pressure regulator and just need to buy and in line pump?
what terms should i seach for on Summit to find suitable fuel pumps. I just seem to find thousands and thousands of fuel pumps for carbs!
06-22-2007, 11:32 AM
#2
If it is a OEM fuel rail, that mean you have a early style fuel rail that uses a return line to the tank. You still need a regulator. Search the forum for information on using a regulator with a early style fuel rail (97 vette). I have seen drawings posted.
If you don't want to run a return line front to back, just pickup a return less fuel rail.. you can get them on the 4 sale section for anywhere from cheap to $50.00 or go after market fuel rail and regulator.
Add EFI to the search. Many use the Aeromotive bypass regulator.
If you don't want to run a return line front to back, just pickup a return less fuel rail.. you can get them on the 4 sale section for anywhere from cheap to $50.00 or go after market fuel rail and regulator.
Add EFI to the search. Many use the Aeromotive bypass regulator.
06-22-2007, 11:58 AM
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ok guys, thank for both your replies.
i "think" that only one of you can be right though
i "thought" that the blob with the vaccum tube on the fuel rail was a regulator, but i'm not even 80% sure of that!
i "think" that only one of you can be right though
i "thought" that the blob with the vaccum tube on the fuel rail was a regulator, but i'm not even 80% sure of that!
06-22-2007, 01:03 PM
#6
Originally Posted by pugwash
ok guys, thank for both your replies.
i "think" that only one of you can be right though
i "thought" that the blob with the vaccum tube on the fuel rail was a regulator, but i'm not even 80% sure of that!
i "think" that only one of you can be right though
i "thought" that the blob with the vaccum tube on the fuel rail was a regulator, but i'm not even 80% sure of that!
What does your's look like?
97-98 Corvette Dual
The top one in this pic is a 2002 style single rail.
Last edited by stealth71; 06-22-2007 at 01:11 PM.
06-22-2007, 01:34 PM
#7
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umm it doesn't really look anything like either of those!
if anything it looks most like a 97-98 dual rail, but it has 2 flexi hoses which end in male and female quick connectors of some sort!
i'm surprised that it is an "early" version as the vehicle it came from was a late '01 F-body LS1 with an corvette LS6 intake!
if anything it looks most like a 97-98 dual rail, but it has 2 flexi hoses which end in male and female quick connectors of some sort!
i'm surprised that it is an "early" version as the vehicle it came from was a late '01 F-body LS1 with an corvette LS6 intake!
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06-22-2007, 09:35 PM
#10
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Could it be the evap. emissions line your seeing? This would clip on to the fuel rail but the hose connects to the intake manifold just behind the throttle body.
06-22-2007, 10:12 PM
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A 2002 f-body does not have a dual line fuel rail.. its returnless.. hosspowerinc is right I think you are looking at the evap system.. you will need an aftermarket regulator.
06-23-2007, 09:22 AM
#13
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If all the parts on it are from GM, your engine does not have a return line or a regulator on the fuel rail. Period.... There are two lines running to the engine. The fuel feed line and the fuel tank vent line. Look at your entire fuel rail. I'm sure there is only one line connecting to it. you will need to install a pressure regulator somewhere in the line before the rail.
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Re'
06-25-2007, 08:00 AM
#14
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Originally Posted by stealth71
You are wrong. Please don't miss inform people.
Reread my post and do sum research before you call me wrong.
I have a 2000 5.3 in a 89 suburban witch uses a return line and don’t need a regulator other than the one in the rail. On my 89 s10 with a 98 ls1 with no return on the rail witch did need a regulator with a return.
http://www.hotrodlane.cc/PDFFILES/Lisa%20Tahoe.pdf
Last edited by 88s10; 06-25-2007 at 08:54 AM.
06-25-2007, 09:09 AM
#15
Originally Posted by pugwash
i have an F-body '02 LS1 with an LS6 intake. !
88s10.. If I read Pugwash question correctly, He stated he was working with 02' LS1 F-Body Engine and intake(LS6 should be the same as older LS1's).. which is not like the 5.3L truck engines.
So, if we are talking F-Body intake and fuel rail and not a truck 5.3l system.. it would be a returnless system and would need some regualator between the pump and fuel rail (unless Pugwash is using a complete F-Body Fuel pump sender unit with pump and regulator).
To clairfy, Pugwash, can you post the part number of the fuel rail ? if there is one still on it.
06-25-2007, 09:38 AM
#16
Roger. It was just confusing. It sounded like you were stating if you have a return line you don't need a regulator.
When you were saying if you use fuel rail (insert specific fuel rail here) it has a built in regulator and you don't need one. Sounds like you are talking about one of the truck fuel rails.
We are talking about vette/f-body rails.
When you were saying if you use fuel rail (insert specific fuel rail here) it has a built in regulator and you don't need one. Sounds like you are talking about one of the truck fuel rails.
We are talking about vette/f-body rails.
Originally Posted by 88s10
Reread my post and do sum research before you call me wrong.
I have a 2000 5.3 in a 89 suburban witch uses a return line and don’t need a regulator other than the one in the rail. On my 89 s10 with a 98 ls1 with no return on the rail witch did need a regulator with a return.
http://www.hotrodlane.cc/PDFFILES/Lisa%20Tahoe.pdf
I have a 2000 5.3 in a 89 suburban witch uses a return line and don’t need a regulator other than the one in the rail. On my 89 s10 with a 98 ls1 with no return on the rail witch did need a regulator with a return.
http://www.hotrodlane.cc/PDFFILES/Lisa%20Tahoe.pdf
06-25-2007, 10:07 AM
#17
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thanks for all your replies guys
can't get down to the workshop for a few days but when i do i wll take a close up and see if i can find a part number.
If you chaps could be good enough to have another look after i have posted the piccies then i would be very grateful.
many thanks
Jim
can't get down to the workshop for a few days but when i do i wll take a close up and see if i can find a part number.
If you chaps could be good enough to have another look after i have posted the piccies then i would be very grateful.
many thanks
Jim