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PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,625
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The fuel pump delivery test is measured at the return line to the tank. You disconnect the rubber hose that goes from the left front corner of the engine bay to the lower firewall, and measure the flow without the engine running. The FP has to deliver that amount of fuel through the entire CIS and back to the tank.
Post the picture anyway. It might give us some hints at other stuff. I don't know how the SP would be as low as 1.8 bar, unless the pressure regulator valve on the fuel distributor was assembled incorrectly. If you verify the gauge is reading correctly, and SP really is 1.8 bar, then the next step after the FP delivery test will be to remove and inspect the pressure regulator valve, to make sure it was assembled and installed correctly in the FD at the last "rebuild."
Also post a pic of the WUR and its connections.
Once you get it stated, how does it drive?
BTW, air in the lines will not affect the pressure readings. No need to go through any acrobatics to bleed them.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
Last edited by PeteKz; 03-02-2025 at 12:33 AM..
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