The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Great but let us know how you solved it EOM (archive)
[ Follow Ups ] [ 3-series (E21) Message Board ] [ Msg. Board FAQ ]
Posted by Maybe we can learn as well. on July 11, 2000 at 22:14:04:

In Reply to: never mind, problem solved posted by RJ on July 10, 2000 at 15:24:31:

: : I am currently working on the fuel system of my project car (e21 with 3.5 from a 635CSI. I know the pump feeds the fuel to a pressure accumulator, then to a filter, through a pressure regulator, and then to the fuel rail. Is the fuel pump supposed to run all the time when the ignition is switched on?
: : The pressure regulator works on the vacuum in the intake manifold. Does the regulator cut the flow of fuel entirely when there is no vacuum in the intake manifold?
: : I'm asking because today I hooked up all the fuel system components and then put everything under pressure by putting starter cables directly to the pump (just to check for any leaks). After the pump had built up pressure it seemed like it kept on trying to built even more pressure, making a lot of noise. If the pressure regulator cuts the flow of fuel to the fuel rail when there is no vacuum, and because of that fuel cannot be pumped back to the tank, then where is the pump trying to pump the fuel to? Thanks in advance for any help.

Follow Ups:


[ Follow Ups ] [ 3-series (E21) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2009 Jump Internet Inc. All rights reserved.