How hard to replace pipe connecting to fuel filter

I'v been having starting problems with my 91 accord, so I tried
replacing the fuel fitler. When I screwed in the nut on the flared
input hose, I misthreaded it and I think I messed up the bolt, but I
was not sure. So I turn the key to on several time to pressure the
fuel system, and there was no leaking so I though it was ok (but the
car still wouldn't start). It did not seem like there was any pressure
in the fuel system. I had an extra main relay so I tried swapping that
out, and it didn't help. Then I tried the test to see if I was getting
voltage at the fuel pump, I unplugged the 3 pin connector at the fuel
pump and shorted the main relay pins(see
http://www.honda.co.uk/owner/AccordManual/400/6-215.pdf). I was not
getting voltage but noticed that the wire going to the 3 pin connector
plugged had a plug about 15 inches up it and this had come unplugged.
So I plug it back in(it is still not connected to the fuel pump at all)
and fuel starts spraying out of the connection to the fuel filter. I
pulled the shorted main relay and it stopped.

So i have 3 questions
1) How hard is it to replace the fuel hose that connects to the fuel
filter(the one the goes toward the back of the car). Specifically, do
you need to take out the fuel tank, or does it connect somewhere easy
to replace. I couldn't find anything about this in the online shop
manual. Or is there a way around replacing it.

2) Why did it start spraying then. The fuel filter did not get turned
on. the only difference I could see was that the wire was not
connected to ground before I plugged it back in. Is there a check
value somewhere that just did not open until then, or what would cause
the the pressure to build up then(considering the fuel pump was
disconneted.

3) If I leave the car for a day, any fuel that sprayed would have
evaporated, right? So Assuming I don't spray any more fuel I should be
ok to run the car in a day, right?

Thanks;
-Ed

 

Replacing the hose is hard since it runs inside the cabin.

The pump is (often times) grounded somewhere inside the fuel tank. The
pressure builds up because the fuel pump didn't run or run at full power before.

Yes if the cross thread is fixed. -- I've cross thread this bolt many years
ago. It's much easier to re-attempt to thread it correct by visually aligning
(with a mirror or what not) before re-attempting the bolt.

 

I got a new fuel filter, and was able to screw it on properly this
time, so I don't need to replace the line after all.

The fuel is all evaporated, but the gas still smells like gas. Does
the smell take longer to go away then the actual fuel. I checked and
verified no gas is leaking anymore.

 

Fuel evaporates before you can see it. Some of the places that can
do this is around the fuel injector o-rings or the fuel filter.