loosing fuel pressure

[GilLesS72]

starts well, run well at idle, then when i start throttling up a bit it starts boging down, it picks up as soon as i start priming the bulb. It will work perfectly until i stop priming the bulb then it will bog down again. In forward gear at really low speed it does not bog at all but primer bulb is a soft. Leads me to trying to find an air leak somewhere. I did not find anything, swaped all my fuel lines for clear fuel lines. Found out that right after my fuel filter right before my first carb there's some air accumulating there. I joined a pic and circled it. The air accumulate only when i give it some throttle... any idea whay vould cause that?

please don't mind the 20 zip ties on the pulser hose, it's just so that it keeps shape XD

 

[Chris1956]

Your circle looks to be on the pressure side. No air should be sucked in there. I would look upstream of your fuel pump. Maybe the air is coming in slow, between the fuel pump and the fuel tank, and accumulated in the part you circled?

 

[GilLesS72]

Your circle looks to be on the pressure side. No air should be sucked in there. I would look upstream of your fuel pump. Maybe the air is coming in slow, between the fuel pump and the fuel tank, and accumulated in the part you circled?

thanks for answering back. i've just took the pump off and disasembled it. Found a broken check valve in there...freakin amazon fuel pump. Mistakes on me never again. quicksilver merc from now on.