And miss the opportunity for a simple diagnostic check?
There's a reason I do this for a living. 
With all due respect to you and the world's most famous mouse, hanging an improper fuel pump with cable ties is what we call "Mickey Mouse mechanics". Perhaps it's OK just to see if the gravity issue is at play here, but those wires have cracked insulation, the terminals are exposed, and this looks like a hot mess. I'd say rip it out and do it right. Is it worth spending so much time (which translates to money if you paying someone to do it) to diagnose?
On many cars of the era, people mistake electrical problems for fuel problems, and in one old British service guide for our old Austin Cooper, it said "Carburettor is a French word meaning 'It's the electrical system, stupid!'" However as we all know, NOT SO with the Pagoda. fuel pressure and fuel volume are critical. The injection system is a complex mechanical marvel. We all know there are a number of things that affect that, chief among them the fuel feed pump. Too often people are trying to take the least costly or cheap route to a solution instead of the proper route. You can mouse around with various fuel pumps, or you can bite the bullet and replace with a proper one. You can clean your screens and tank, and even have your tank coated or some such, but there's no substitute long term for a replacement. These are NOT cheap cars to maintain, and cheap solutions don't last.
No I don't do this for a living, but there's a reason why my 52 year old car is pretty well sorted. I didn't take shortcuts, for what its worth.
(Now that being said the next few months will tell all; the car hasn't been run seriously in several years...so maybe some work ahead of me...)
