^Smart move. Empty tank = mucho easier.
So interesting. Bad pump, replaced with new, new pump sun standard and short in the connector on the pump side? While a bit unusual, not unheard of. I’ve had more poor quality with out of the box new parts in recent years than I recall ever back in the day…
To the point that I generally start with diagnosing if the new part is the problem since it has been on multiple occasions. (Not just fuel pumps)
I have one of those suspect fuel pumps in our boat.
Boat runs a common GM in tank fuel pump for efi engines. Replaced a couple years ago when the original one died.
New one fixed that issue, but it does not sound as good as the original and 2 out of 3 tries it won’t fire the engine on the first attempt, even waiting for priming to stop before cranking it over. And it always cranks longer than it should, to start.
It makes proper pressure, even under full throttle, tested that as I’d prefer not to replace it unnecessarily. But it is not a good pump. Being a boat, it has had less than 100 hours of run time since replacement.
But my suspicions were confirmed completely last week after being on a buddys boat with the same engine and same exact replacement pump. (His boat has far more hours and his “new” pump has lasted hundreds of hours now and it sounds healthier than the poor quality one I have. Thus when mine died I bought the same brand /model pump he did because he already had years of operation on the new pump with no issue )
Mine sounds like an electric motor spinning a small rock tumbler by comparison…