81 Air Cooled, Fuel Injection.

I think after and afternoon of messing with it, I can ask some intelligent
questions, as opposed to "it don't work <g>"

I used the bentley and a lamp to test the double relay and it checked out
okay.

As daylight faded, its stuck in the street with no way to get it up the
driveway to the garage, I figured what the heck and cut the fuel line that
crosses over to the injectors on the left side.

Cranked the engine, and no fuel. Since I can't work on it right now, I
wanted to ask if anyone could explain the fuel delivery system. Bentley is
teaching me, but its slow going. :)

I could live with needing a new pump, but I can't sleep wondering <g>
Assuming the fuel is reaching the pump, and I just replaced the fuel
filter a month ago, are there secrets to AFC system that I don't yet
understand which would give me a reason to suspect something other than
the fuel pump, or its electrical connections.

The output of the pump goes right to that crossover line, or so I am led
to believe, and in the world of carbed machines where I grew up, if there
was no fuel at the carb, there was blockage, or the pump wasn't working.
Does this apply in AFC as well, or are there other sections that could be
failing to prevent the pump from doing its thing.

I suspect there is more to it than this, as the Clymer manual says to
disconnect the return fuel line? from the pressure regulator, which is
under the vehicle. Does that mean that something else could prevent the
fuel from reaching the line I cut, other than the pump failing, or
blockage?

Life is such that the van sits along the curb in the street, so I cannot
get underneath and test the pump. I will have to assemble a gang on Monday
to push it into the garage......

Do all vans have the big cover over the bottom of the van, or is it their
on mine because of the aux heater? That thing is a drag for getting at the
pump.

Anything anyone can add would be appreciated, as now I feel like I should
be able to fix this myself, rather than taking the easy way out and towing
it to the shop. :) Once I found the Clymer manual in the basement, it made
it a little easier to test stuff, as the Bentley doesn't offer much in the
way of troubleshooting.

Thanks for the help and moral support.

Regards,

John