Thread: Need Fuel system help 1991 300SD, Bosch CSI
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Old 03-18-2020, 09:04 AM
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MS Fowler MS Fowler is offline
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Location: Littlestown PA ( 6 miles south of Gettysburg)
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Quote:
Originally Posted by christuna View Post
If you're getting 85 psi then your accumulator and fuel pump are in excellent shape. If you measured that pressure at a correct port in the fuel distributor then you FPR is likely good enough to get the car to run.



Your system pressure is supposed to be between 75-80psi


more info:
http://w124-zone.com/downloads/MB%20CD/W124/w124CD1/Program/Engine/103/07.3-1603.pdf


to check if your fuel injectors/fuel distributor is good what you may want to do is set up something similar as in this video (I did that on my SE to check my injectors/fuel dist):


https://www.youtube.com/watch?v=6yrwqspHhak
Nice video of your injector test setup. I have pulled one injector and used the air compressor to force some fuel thru it, and the spray was very fine. After I make sure it runs, I might cobble together something like you did to quantitatively test the flow and pattern in all. But first I want to have it running.
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