Yeah the pump is mounted above the axle about 12” from the tank. The battery is over the rear right so it’s kinda close to the pump. And yeah I’ll need to readdress my wiring job. I’ll do that when I change out the 1 gauge wire with 3/0.

Does the pump have a “flooded head”. Or is it having to lift the fuel from the supply side??

Greg I know that I don't know you that well, but I'm not hip to "gay slang". I sure as hell don't know what a flooded head is. And "lifting the yellow"....is that a derogatory anti-Asian statement from back in the days of WW2?? I think I might be triggered by those statements.:)
Just kidding brother. No dude, I seriously don't know what you mean.

LOL ---- Okay - Okay!


Flooded head -- means does the fuel flow to the pump intake side without any help (suction). So it would be about like saying -- is the PUMP lower than the TANK


Yellow? Yeah that's the color of my race gas! Did I really say that??? LOL I corrected the post and substituted the word FUEL for Yellow.


So what happens with most electric fuel pumps -- they're not made to SUCK fuel - they're made to PUSH fuel -- so if the head (pump) is flooded -- the fuel flows to the pump naturally -- and the pump only needs to push it along...... IF you have to lift the fuel -- i.e., the pump has to SUCK fuel to feed itself --- the suction can create cavitation (air bubbles) - and if it's too severe can cause the fuel to "boil".....


I'm really just trying to help get this sorted out - and not being able to see the set up etc - causes questions.

The pump is a little higher than the tank so it’s sucking about a foot and a half of fuel and pushing the rest. Would a fuel pump controller work in this situation? I’ve got some 3/0 gauge wire coming and so I’ll try that as well. When my fan turns on, that’s when the pressure drops on my regulator.

Heat Soak
 

My A1000 pump on my firebird was mounted at the top of the
tank and the outlet feeding it was approx 2-3' away and at
the bottom of the tank... no issues with a 750hp 494 cubic inch
Ponitiac... type of pump (these babies pump a lot) and location
are not his issue.. sounds like too much for his current electrical
system... hopefully his alternator will keep up with things

Bob

Where is your feed and return?
Hopefully not next to each other in the same sump?

Any updates


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The 2/0 cables seem to be working. My alternator gauge is reading slightly under 14. At the battery it's reading 14.5. Gauge could be off a little. I can't connect my laptop to my ECU bc it keeps crashing (long story). I really need to see what my ECU is reading, that's the main thing.