Mine is similar to this, only return pipe goes to bottom of surge tank.
Thanks
Surge Tank diagram.jpg
Mine is similar to this, only return pipe goes to bottom of surge tank.
Thanks
Surge Tank diagram.jpg
it's weird to me to have a surge tank without putting the pressure pump inside of it (quieter and cooler, that's why all car manufacturers put them in there)
to be clear which return is at the bottom? for the high pressure loop, or the fuel tank return? your fuel tank return should definitely be at the top to ensure maximum filling of that surge tank.
is your regulator vacuum referenced?
Return is to bottom of surge tank. I could put a T in the top bung to share bung with overflow tube. Regulator is open to air per Aeromotive recommendation. Thanks for the advice.
Abe
i would prefer to see it like the picture with everything at the top. the way you have designed it sounds like the kitchen sink with the drain open which is the worst possible design. it'll never fill. you really want that thing to be completely full or the returning fuel from the high pressure pump will aerate and eventually you'll just be pumping froth. put your feeds at the bottom and returns at the top.
this might not be your problem but it's worth making sure it's ideal
it's way better to just chuck the pump in the bottom of the tank
Have you checked the voltage at the EFI pump and compared readings with engine running and key on not running? Maybe its dropping when the engine is turned on. Whatever it is as KOEO (key on engine off), it should be higher with engine running since the alternator / generator comes into play
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