Need fuel pressure specs for 2000 3.9

I can't find the running KOER fuel specs for a Lincoln LS 3.9 Can someone help me out.. The engine has a miss when driving on a pull. No codes the dealer checked for codes and couldn't find any either and said to lean towards a fuel problem .. Any help greatly appreciated...

Have you searched this forum for misfire threads? It is very common for the 2000-2001 LS to have a misfire due to leaking spark plug well seals saturating the coils with oil. In the early stages, the misfire may not be bad enough to cause a misfire troublecode, but enough that if you go into the component parameters, there will be a higher than zero misfire count on one or more of the cylinders. Fortunately, the 3.9L is pretty easy to pull the coils and check for signs of oil into the plug wells.

As for your original question, Engine running fuel pressure 207-308 kPa (30-65 psi).

-Rod

THanks Shorod, Yes I did search a little on the forum about the miss and seen and heard of the miss due to oil on the coil boots.. I removed all boots no oil. I have 30 pounds of fuel pressure thats all..

the spec is 40psi at the injector nozzle - so do not be fooled when you measure it - if you are measuring at the rail air in the fuel line - you will read lower by the intake vacuum..... so at standard idle you should see about 22hg of vacuum (-10.8 psi roughly) so 40psi - 10psi = 30psi....