This sounds like a fuel starvation problem. Start with the simple stuff, i.e. fuel filter (whoops already did that), accumulator, fuel lines, pump function (see if you can get the fuel pressure read), check the vacuum line from the manifold to the fuel pressure regulator. Did this start all of a sudden or has it been getting slowly worse? How many miles on the motor? Anthing else been done to it recently?

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Jeff L
1987 300e
1989 300e
1987 BMW 325

[This message has been edited by jeffsr (edited 04-13-2000).]