Thread: Help..Diesel MB. high school, metal shop project car
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Old 04-05-2007, 01:38 PM
SD Blue SD Blue is offline
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
I'm assuming that one 3-way valve is for fuel input and the other is for the return?

Double check that both of the 3-way valves are switching completely. It sounds as if the return line may be blocked and causing pressure to build in the system.
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Sam

84 300SD 350K+ miles ( Blue Belle )
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