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Re: To Return or Not Return
There is a fairly recent thread where someone tried installing a 'proper' 3 line pump in place of the existing 2 line pump. Things didn't go well.
Who knows why the PO installed the 2 line pump.
Possibilities include but not limited to:
Was sold the wrong pump.
Specified the wrong pump.
Return line rusted out and leaking.
Replaced 6 port dual tank valve with 3 port valve.
Went on a replace ALL evil emissions stuff bender.
Put wrong replacement sender in tank(s).
If it is working fine now, don't change anything until you have time/ inclination to figure out why that line is plugged. In the mentioned thread, when the OP switched back to a two line pump, it started working fine.
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