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On 7 Dec 2005 at 22:50, Tim Johnson wrote: > ok my parts car fastback is fuel injected i had this fire by feeding the > plenum so i know it will run. there was no fuel pump in the car. i now > have one but the lines in the car are rotton so i was going to rig it at > the back right off the motor just as a temp thing as I want to test the auto > trany that is in the car You can do that for testing purposes, but I don't think it will be any easier than running it from the front. > questions > > #1 how much fuel pressure is it 30 psi > # 2 does the regulator reulate the retun fuel or the incomming The fuel input is on the left side, while the return is on the right, bled off of the regulator output. > #3 can I hook the pump to 12 vots and run it on it's own or must it be > timed with the computer (just wanted to get pwr from + side of coil) You can just hook it to 12V for a test. The polarity is marked on the side of the connector. The three nipples are as follows: pump input is farthest from the connector. Pump output is in the middle. The nipple closest to the connector is the overflow, which you can probably just block off for this test. (Blocking it off MAY make it hard/impossible to prime, so you may have to open it briefly to get the pump to actually pump.) -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~