Lj78 lack of fuel pressure (1 Viewer)

[Alberto Portas]

Hello guys, I have a lj78 prado 2lte. It was parked for many years. So I star to work on it changing oil, filters, and others. The issue is with the fuel filter, I installed a MAN fuel filter. But the engine feels lack of fuel and not make acceleration; when i pump the primer with the engine running it accelerate fine for couple minutes... then it feels lack of fuel again. But If I bypass the filter it run beautiful with not issues at all... what's do you think can be?
Thanks for the help, Alberto

 

[TheBussman]

it's sucking in air somewhere, around the filter gasket, a hose or the primer

 

[Alberto Portas]

it's sucking in air somewhere, around the filter gasket, a hose or the primer

Thanks bussman....Yes I was thinking on that too...To be fear i didn't spend to much time analyzing the problem...but yes that could be a possibility and when i bypass the filter may not suck air becase is les resistant so if is sucking air should be after de primer that actually is new too.... I will work on it next weekend again to see if I find anything and keep you update
Thanks again Bussman.

 

[Alberto Portas]

it's sucking in air somewhere, around the filter gasket, a hose or the primer

I came early from work today and start to see if i find the air licks.... and find it! Was the o-ring of the water separator drain, look pretty flat and actually if I pump the primer little hard fuel coming out front the whater drainer.
Thanks bussman for your help