If your little primary filter does not cure the problem my bet would be on the tank strainer.The one in our car caused exactly the same problem and when i took it out there was black slime about 2/3 of the way up the screen so when the fuel got low it could not get enough thru the slime to run right. Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles