Carb fuel pressure regulator
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BammBamm
- Posts: 240
- Joined: Fri Jul 31, 2015 1:23 am
- Your car is a: 1982 Pininfarina Spider
- Location: az
Carb fuel pressure regulator
For whatever reason I cant get my FI to work. So I want to swap it over to the carb I have. WHen i connect the fuel line with my FI fuel pump gas just pours out of the carb. Is there a pressure regulator that i should use?
Bill Woodbury
Design Engineer
Zero Shock Seating
1982 Spider 2000
Design Engineer
Zero Shock Seating
1982 Spider 2000
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geospider
- Patron 2020
- Posts: 585
- Joined: Mon Mar 20, 2017 9:07 pm
- Your car is a: 1979 Spider 2000
- Location: concord, ca
Re: Carb fuel pressure regulator
Need a lower volume/pressure fuel pump. Wouldn't mess with a press reg. The Facet pump works great: I believe 2-5 psi..
geo
geo
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18Fiatsandcounting
- Posts: 3798
- Joined: Fri Mar 15, 2019 11:23 pm
- Your car is a: 1969 and 1971 124 spiders
- Location: San Francisco Bay Area
Re: Carb fuel pressure regulator
Geo has it right: a carb is designed to receive around 3psi pressure from the fuel pump, give or take a psi. Any more than that and it will overwhelm the needle valve on the float, which sounds like what's happening with your engine. The FI system is built for a much higher pressure, and so the fuel pumps are designed accordingly. But they won't work for a carb setup.
If you're going to switch back to a carb, you'll need to switch back to the fuel pump designed for that.
-Bryan
If you're going to switch back to a carb, you'll need to switch back to the fuel pump designed for that.
-Bryan