I can't say that I have, do I just pull a line off and see that it's pushing fuel?

I figured since the fuel was getting up into the canister filter that the lift pump was operating.

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1987 300SDL 167k
1992 Volvo 740 140k
1990 Volvo 740 250k
1989 Volvo 240 269k

Anyone want to trade an old Volvo for an '87 300sdl?