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Fuel Pump Install Question

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Old Oct 8, 2012 | 07:34 PM
  #1  
Rich92 RS's Avatar
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From: Crestview, Florida
Car: 86 IROC-Z, 98 Z28
Engine: 370 LSx, LS1
Transmission: T56's
Axle/Gears: 3.73, 3.42
Fuel Pump Install Question

Installing the new fuel pump in the pickup assembly for a 92z L98 and ran into a little dilemma. The stock setup had this thing connecting the pickup tube to the fuel pump, and was wondering if I should re-use it or use the supplied rubber hose instead. Fuel pump kit is from Racetronix, and I emailed them aswell.
Attached Thumbnails Fuel Pump Install Question-img_8005.jpg  
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Old Oct 9, 2012 | 07:05 AM
  #2  
afremont's Avatar
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Joined: Feb 2008
Posts: 1,004
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Car: 90 IROC
Engine: 5.7 TPI
Transmission: 4L60
Axle/Gears: 3.23
Re: Fuel Pump Install Question

I believe that it's called a pulsator. It's a rubberized chamber that I believe is there to absorb shock waves created by the injectors opening and closing in a batch. Last time I changed my pump I didn't put it in, next time I think I will just to see if it stops the fuel pressure gauge needle from vibrating like it does.
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Old Oct 9, 2012 | 08:29 PM
  #3  
eseibel67's Avatar
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From: Kitchener, ON
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: Fuel Pump Install Question

Yes, it is the pulsator. It's not needed, neoprene hose will do the job.
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Old Oct 10, 2012 | 02:18 AM
  #4  
88camaroscv6's Avatar
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From: Long Island, NY
Car: 1989 Formula, 1988 Camaro
Engine: Vortec 350 TPI, 2.8 V6
Transmission: 700r4, 700r4
Axle/Gears: 4th Gen 3.43 Posi, 3.43 Open
Re: Fuel Pump Install Question

throw that out and use the hose, pulsators start to leak eventually and are useless
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