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Subject: "Fuel pressure staying the same at 8psi as at 4psi ???" Previous topic | Next topic
sikeJul-12-05 02:03 PM
Member since Aug 06th 2003
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#87918, "Fuel pressure staying the same at 8psi as at 4psi ???"


          

I don't understand what the problem is here. I was getting about 45~48 psi fuel pressure at 4psi boost, so I jacked up the boost to 8psi, and it doesn't go any higher. I'm running SFMU with the largest disk, short/dark spring, vacuum screw all the way in, bleed screen in tight, boost port is blocked, 24psi idle pressure, and walbro 255. Any ideas?

  
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willmayoJul-12-05 07:47 PM
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#87930, "RE: Fuel pressure staying the same at 8psi as at 4psi ???"
In response to Reply # 0

          

what injectors are you using? If stock that idle pressure sounds low to me. on stock injectors i run ~49ish at idle.

--------------------
99 GS-Turbo 3.55 MTX
S16G @ ~15psi - FMIC - Forged Internals
Clinton Township, MI

Status: Parting Out...

  
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sikeJul-13-05 09:10 AM
Member since Aug 06th 2003
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#87935, "RE: Fuel pressure staying the same at 8psi as at 4psi ???"
In response to Reply # 1

          

accel 335cc/m

  
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sikeJul-15-05 03:33 PM
Member since Aug 06th 2003
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#87976, "RE: Fuel pressure staying the same at 8psi as at 4psi ???"
In response to Reply # 2

          

FYI, it was the fuel pump not pumping enough fuel. It was a walbro 255. Replaced it with a new 255. Dunno if it was simply the prefilter on the pump that is clogged or what, but everything is working now.

  
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96rs-tJul-15-05 09:29 PM
Member since Jun 04th 2003
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#87978, "RE: Fuel pressure staying the same at 8psi as at 4psi ???"
In response to Reply # 1
 Jul-15-05 09:29 PM by 96rs-t



          

Originally posted by willmayo
what injectors are you using? If stock that idle pressure sounds low to me. on stock injectors i run ~49ish at idle.


daym! On my stock injectors i run 60psi @ idle.. emoji



SoCal DSM
1996 RS-T: Under Construction
1999 GS AE: New daily driver
"USING NO WAY AS A WAY, HAVING NO LIMITATION AS A LIMITATION"--BRUCE LEE

  
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