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Blocked fuel return line inside tank
Posted: Mon Jan 13, 2025 8:25 am
by Onure30
My return line inside my fuel tank is blocked,
Anyone know a good way to unblock it?
Ive sprayed it up with WD40 and let it soak for days and air pump to (200psi) and still not budging.
Re: Blocked fuel return line inside tank
Posted: Tue Jan 14, 2025 3:44 pm
by Speedtouch
Perhaps try 'dyno-rodding' it with a length of wire or bowden cable, perhaps? Also try using a degreaser such as Gunk rather than WD40....
This thread may offer some tips:
https://www.bimmerforums.com/forum/show ... rn-Blocked
Re: Blocked fuel return line inside tank
Posted: Wed Jan 15, 2025 9:02 am
by Onure30
I need a new tank,
I cut open the fuel tank and removed the pipe and unblocked it, i then filled the tank up with water and the siphon is still not working. Something is messed up inside the pipe
Im after a used or new fuel tank..
Re: Blocked fuel return line inside tank
Posted: Thu Jan 16, 2025 4:36 pm
by E30Derbyshire
Fuel tanks are still available new from BMW, but they ain’t cheap!
Re: Blocked fuel return line inside tank
Posted: Fri Jan 17, 2025 1:22 pm
by Onure30
E30Derbyshire wrote: ↑Thu Jan 16, 2025 4:36 pm
Fuel tanks are still available new from BMW, but they ain’t cheap!
Got a used 55l tank and fuel gauge to go with it,
The 63l tanks seem unreliable, 55l runs the transfer pipe outside the tank.