I have upgraded my fuel system with a KGParts 1680cc second rail and additionally I have installed a Bosch 044 fuel pump and rewired the fuel pump to the battery (OEm fuel pupmp relais now steers an additional relais instead of powering the fuel pump)
See for info
http://www.rx7club.com/showthread.php?t=847009&highlight=fuel+pump+rewiring
Now, when I put the key in "ON", the pump briefly runs and stops (not starting). This is normal as it wants to fill the lines before starting.
NOw, my KGParts rail came with a FPR. When the pump briefly runs, it shows pressure on the FPR gauge and drops to zero when the pumps stops. From my point of view it seerves no use in that way.
Wouldn\'t it make more sense if the fuel system would contain a one way valve (between pump and prim fuel rail) to hold pressure on the fuel rails? Even when the engine is not running?
You have to buy a oneway valve to fit on the fuelpump ;-)
Just ask Clive, he will help you out ;)
http://www.google.be/imgres?imgurl=http://www.expressfuelpumps.com/images/bosch-fuel-pumps/bosch-044-fuel-pumps-3.jpg&imgrefurl=http://www.expressfuelpumps.com/bosch-044-fuel-pump-inline-p-3805.html&usg=__Acq09BNEllakf2uh8ZHGTgalyYc=&h=381&w=600&sz=111&hl=nl&start=0&zoom=1&tbnid=C11kIO9t2ulb-M:&tbnh=111&tbnw=175&ei=Kiq8Te-sFMLD4gb_ofm0Bw&prev=/search%3Fq%3Dbosch%2B044%2Bfuel%2Bpump%26um%3D1%26hl%3Dnl%26sa%3DN%26rls%3Dcom.microsoft:nl-be:IE-SearchBox%26rlz%3D1I7GFRD%26biw%3D1003%26bih%3D590%26tbm%3Disch&um=1&itbs=1&iact=rc&dur=563&page=1&ndsp=14&ved=1t:429,r:6,s:0&tx=95&ty=62
Crap... I though it came with the pump as standard
If you\'ve got one from Clive it\'s already on it ;-)
I got mine from atomic rex if I recall correctly and if I remember it waas on but I changed it in order to put on another sort of nipple to put the hose on.... fark
will check :)
Are you using push on or AN fittings?
Most Bosch 044\'s come with a one way valve as part of a banjo arrangement. However, if you remove this to switch to AN fittings then you lose it.
The one I sold you certainly had the one way valve on it.....all genuine Bosch pumps do. People for some strange reason modify them though....Annoyingly though Bosch wont sell the valves on their own
OK thanks, liek I said, I need to check things again then. I recall altering the connection to the pump due to space issues. (I did it months ago)
Thanks again !