Do you have a fuel pressure regulator in line? that could cause an issue. they are generally only used with later model pumps that put out too much fuel for the carbs. Also those are usually installed between the pump and carbs. So I'd say it's unlikely.


If you had a later model volvo, I'd guess that your fuel filter was clogged up.

If your lines and filter and carbs *and* pump is good, my only thought would be some sort of vacuum pressure in your tank. Can the tank "breathe"?

Still, my gut tells me it's your pump in some way...
--
1967 P220 Amazon, 1972 145S, 1973 1800ES, 1977 245 DL, 1983 245 GL, 1986 745 GLE, 1990 745 GL, 1995 945....
Sedan? .... What's a Sedan?