| Go back to previous topic | | Forum name | Turbo/Nitrous Tech | | Topic subject | Fuel pressure staying the same at 8psi as at 4psi ??? | | Topic URL | https://forums.2gnt.com/dcboard.php?az=show_topic&forum=i8&topic_id=87918 |
87918, Fuel pressure staying the same at 8psi as at 4psi ???
Posted by sike, Jul-12-05 02:03 PM
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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87930, RE: Fuel pressure staying the same at 8psi as at 4psi ???
Posted by willmayo, Jul-12-05 07:47 PM
what injectors are you using? If stock that idle pressure sounds low to me. on stock injectors i run ~49ish at idle.
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87935, RE: Fuel pressure staying the same at 8psi as at 4psi ???
Posted by sike, Jul-13-05 09:10 AM
accel 335cc/m
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87976, RE: Fuel pressure staying the same at 8psi as at 4psi ???
Posted by sike, Jul-15-05 03:33 PM
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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87978, RE: Fuel pressure staying the same at 8psi as at 4psi ???
Posted by 96rs-t, Jul-15-05 09:29 PM
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...:D
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