so it's unlikely that the issues stems from the pump itself.
Oh really?
A fuelpump's task is to deliver fuel at a certain pressure, not draw electricity by merely running or make a noise.
Same for your injector, it has to delivery a certain qty of fuel by means of atomizing it through all its holes. So you can skip this too because it runs at times, so this item also will be fine hmm?
To assume is a nasty habit when faultfinding, and I'll spare you the ass, u & me bit -
check it, no,
all!
The reason why I suspect the injector is the gum old fuel creates, and this tends to clog fine capillaries as found in an injector.
Having said that, if the pump hasn't been disassembled completely when cleaned this is the next suspect.
Ditto for fuel lines rather than filters, reason being the latter is an obvious one.
Remedying fuel starvation is actually simple, one just has to work methodically
