The failure to pump is due to either a ruptured or displaced diaphragm, or sticking or displaced check valves.
As an aside, some of the replacement pumps on the market a few years ago had terrible problems with the check valve assemblies falling out...
Glen
--Previous Message--
: after 2 days of off and on and toying
: with it, and poking and prodding on two
: other forums I think I have the answer.
: The exploded diagram shows a curved arm
: and the one I have is straight. My
: spare is curved, so I swapped em and no
: issues.
: But now it is not pumping, even though
: that diaphragm was good just yesterday.
: Guess it's time to install the new
: diaphragm.
: I don't recall ever swapping my fuel
: pump, but maybe I did for some reason
: since I stopped driving my car in 97.
:
: --Previous Message--
: Been a while since I asked anything
: here,
: so I'll let you have the first crack at
: it since it will be a day or so before
: I can act on the advice:
: I got my engine started for the first
: time in years. (YAY!) The problem is,
: last time I messed with it I must have
: cross threaded the outlet of the fuel
: pump. (stock glass domed mechanical
: one), so after dealing with a leaking
: pump for the first test firing I
: replaced the now bad part with a spare.
: Hindsight tells me I could have done
: this without removing it,
: but....Anyway, now the priming lever
: works but the engine seems to run till
: the carb bowls run out of fuel, so it
: sounds to me like I didn't get the pump
: seated correctly. Any ideas on properly
: seating the lever?
:
: Just for kicks, here is it running.
:
:
: https://www.youtube.com/watch?v=f-IEeZ4rzns
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