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Mysterious Piece During Fuel Pump Install!?!? can i do without???

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Old Jul 17, 2005 | 08:18 PM
  #1  
CamarosRUS's Avatar
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
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Mysterious Piece During Fuel Pump Install!?!? can i do without???

what exactly is this piece?? all it looks like is a coupler between the fuel pump and the fuel lines but whats up with the metal part. when i went to put the new pump on this piece doesnt fit snugly but could i just use a piece of rubber fuel hose to connect the pump to the metal lines???

Last edited by CamarosRUS; Dec 30, 2006 at 12:35 PM.
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Old Jul 17, 2005 | 09:47 PM
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Its the pulsator. Basically a muffler for the fuel system.
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Old Jul 17, 2005 | 10:45 PM
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
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Axle/Gears: 3.08 10 Bolt
ah okay. so i can get away without using it and just connecting the pump and lines with a piece of hose?
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Old Jul 18, 2005 | 10:37 AM
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From: Greenville, SC
Car: 1991 Chevy Camaro
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3.42
Originally posted by CamarosRUS
ah okay. so i can get away without using it and just connecting the pump and lines with a piece of hose?
Yes, but it needs to be a specific fuel hose (this quote is from APEUSA.com, a place that sells Walbro fuel pumps):

If you need to use a piece of fuel hose inside your tank, be sure it is SAE J30R10 spec hose. That hose is high pressure fuel hose that was designed to be immersed in fuel. DO NOT use fuel hose that is designed for inline use only [SAE J30R9]. It will not survive inside the tank.
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Old Jul 18, 2005 | 11:22 AM
  #5  
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From: South Carolina
Car: 91 GTA - 94 TPI Suburban
Originally posted by Benm109
Yes, but it needs to be a specific fuel hose (this quote is from APEUSA.com, a place that sells Walbro fuel pumps):
I wish I read that before mistakenly installing the low pressure hose when I converted my 94' Suburban to TPI. The hose eventually split under the pressure. Luckily for me, the Suburban tank is easy to drop, unlike the 3rd gen cars. I had to buy a new pump to get the right hose, but it was worth the piece of mind.

Whatever you do, do NOT install the wrong hose:



Ed
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