If you have checked to make sure all lines are open and free of restriction,
has someone replaced a fuel line connecting the tanks under the floor? Has this
problem just started?
If it has been this way for a while and some one has replaced the fuel line,
it may have an expansion loop or excess hose length where the loop is not
horizontal. If there is a loop under the floor and the loop is anything but
horizontal, it can create an air trap that may restrict flow cross wise to the
other tank. Just a thought.
Gordon Smith (JOT) Illinois
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