Massey Fergusson 6290 fuel leaking

[Antonis Theod]

Hello again.
Following to this thread https://thefarmingforum.co.uk/index.php?threads/mf-6290-fuel-problems.369377/
After fixxing my fuel pump and tried the tracktor on field for 2 days the problem seemed fixxed but the third day it started leaking from tank cap a little bit again.... any ideas?
I have new tank cap and i fitted a second flange too. Sorry for my bad english and thanks for your time. I would be really happy to hear your advices and try them.

 

[Farmer_Joe]

Tank breather blocked?

 

[Antonis Theod]

Tank breather blocked?

Checked its clean (the one from the top side)

 

[masseybreaker]

disconnect the steel pipe from the inlet manifold to the boost valve on the side of the injector pump and see if that cures it

 

[Antonis Theod]

disconnect the steel pipe from the inlet manifold to the boost valve on the side of the injector pump and see if that cures it

Disconnect and reconnect? Sorry if my question is silly but i am new to all this

 

[masseybreaker]

no disconnect and run the tractor just cover ends of pipes to keep them clean