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do both pumps have to be working for 240 to start? PS-Content added 1988

uid 18083's pic
posted by  lucid on  Mon Jun 9 08:32 CST 2014
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

"do I have to somehow prime or fill the black tube that runs from the tank to the pump? It's dry even though the tank is full,

• I don't think the main pump can suck air, although they've been known to pull fuel thru a dead tank pump. Try jumpering from the LEFT side of fuse 6 (always 12V there) to the RIGHT side fuse 4 contact with the fuse removed. That point leads directly to the tank pump.
(it would also back-feed to the main pump if the fuse was in place.)

The tank pump should run. The reason for pulling the fuse is to prevent powering the main pump, to make it easier to listen for the tank pump.

"...and can I get it to run if the in tank pump is bad?"

• Not if that tank-to-main pump hose is dry.

P.S. I'm concerned about that BANJO at the filter outlet. Replacements are available HERE .
And Art Benstein has a nice banjo installation write-up at his cleanflamtrap site here FUEL LINE FIX.

--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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