LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Need pics of fuel pump install..Walbro 255 lph..

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Old Nov 13, 2004 | 03:48 PM
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Question Need pics of fuel pump install..Walbro 255 lph..

anyone have pics of their fuel pump installation? I want to mainly see the pump and hoses going out from the pump. I have a problem with my Walbro 255 lph and want to see some other pumps to compare to.. Thanks!!
Old Nov 14, 2004 | 10:20 AM
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Question Fuel PUMP install ..Walbro 255 lph..

I tried to email you from your link on your page and it got returned.
My pump assembly looks like your pictures except the plastic flex hose on my old pump broke off when I removed the old pump from the cannister. I noticed your flex hose in the pictures was cut or removed also. I used a rubber fuel line and a set of hose clamps on the new pump on the out-going pressure line. Could that be a problem? Gimme some feedback...
anyone else got ideas why my pressure will not get past 20 lbs with the key on then suddenly fall to 0lbs after 3-4 seconds? I hear a sound in the tank like a toilet flushing so I guess that is the fuel pressure bleeding off quickly as the gauge shows the pressure fall at the same time as the sound(duh).
Thanks for help..
Old Nov 14, 2004 | 02:04 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Fuel pumps have an internal check valve to keep the pressure from dropping; it's possible that you have a faulty fuel pump. I helped a friend install a Walbro 255 lph last year, about six months later his fuel pressure didn't hold any longer. We'll be installing a Racetronix setup next weekend. As far as only getting 20 psi, you might try applying 12V directly to the fuel pump to have it run full time and see if the pressure comes up (as a test). If the pressure comes up then it's probably the check valve.
Old Nov 14, 2004 | 02:16 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Originally Posted by OBE1 95Z28
Fuel pumps have an internal check valve to keep the pressure from dropping; it's possible that you have a faulty fuel pump. I helped a friend install a Walbro 255 lph last year, about six months later his fuel pressure didn't hold any longer. We'll be installing a Racetronix setup next weekend. As far as only getting 20 psi, you might try applying 12V directly to the fuel pump to have it run full time and see if the pressure comes up (as a test). If the pressure comes up then it's probably the check valve.
doesnt the racetronix come with a walbro fuel pump also?
Old Nov 14, 2004 | 03:22 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

did you use fuel hose specifically designed for "high pressure"??? ie. fuel injection hose or was it regular fuel hose???
Old Nov 14, 2004 | 05:10 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Racetronix includes a modified Walbro pump that will fit the stock fuel can (plastic enclusure that the pump mounts in).
Old Nov 14, 2004 | 05:13 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Originally Posted by OBE1 95Z28
Racetronix includes a modified Walbro pump that will fit the stock fuel can (plastic enclusure that the pump mounts in).
well is the pump alone that they sell modified to fit the fuel can? like the one they sell without the wiring harness?
Old Nov 14, 2004 | 05:23 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Depends on what you mean by wiring harness. The basic kit comes with a wire adapter to fit the stock harness. That set up is $160 or so. The other kit comes with it's own wiring harness and doesn't use the stock wiring.
Old Nov 14, 2004 | 09:11 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

I used a standard fuel line. I think it is 5/16 or 7/16 something like that...It is internally braided but I dont think it is specifically for high pressure.
Old Nov 14, 2004 | 09:22 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Originally Posted by 1badasZ
well is the pump alone that they sell modified to fit the fuel can? like the one they sell without the wiring harness?
Yes, the FLT1-FPA has everything you see in our ad less the PnP upgrade harness.
Old Nov 14, 2004 | 09:28 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

OK..my Walbro 255lph didnt come with a new flex high pressure tube on it. what do I do to replace that flex tube?
Old Nov 14, 2004 | 09:33 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Originally Posted by ninetythreez
OK..my Walbro 255lph didnt come with a new flex high pressure tube on it. what do I do to replace that flex tube?
What a about a proper 30 micron sock to protect the gears in the pump?
The factory 70 micron sock does not cut it.
How are you going to get the new pump to properlly seal into the checkvalve at the bottom of the bucket?
How is the in-tank factory wiring and terminals. Burnt? Corroded / black?
Old Nov 14, 2004 | 09:37 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

The factory terminlas and wiring is fine.
The sock? What do you mean by sock?
Old Nov 14, 2004 | 09:48 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

Originally Posted by ninetythreez
The factory terminlas and wiring is fine.
The sock? What do you mean by sock?
http://www.racetronix.com/product/RX...LT1-FPKG-2.jpg
Old Nov 14, 2004 | 09:48 PM
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Re: Need pics of fuel pump install..Walbro 255 lph..

what is the price for a racetronix set upfor a 93 LT1 with some bolt ons?



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