air buble problem fuel pump

[ektor]

the pipe between the fuel filter and the fuel pump boch lucas shows air bubble. I have checked all the pipes but they are ok.I think that maybe is the pump that have a problem.in traffic the engine is hot.pls help me. I have a peugeot 206 1.9 diesel. thank you

[spider]

I would guess the filter housing is the problem, check the seal around the lid / filter.

If there's air in the pipe between, then its likely the filter area or perhaps before that.

[ektor]

I dont think so because the filter is new.Maybe gets air from ( 45 in photo, Air bleed valve.)???

[spider]

It could be the pipe between the filter and the pump or likely (42) at fault.

Was the filter / seal good quality ? , a poor pattern one (to be fair I have not seen a poor / bad one) could not seal properly.