100 series fuel tank venting

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Joined
Nov 20, 2025
Threads
4
Messages
6
Location
Lancaster England
Hello there,
Does anyone know if my 100 series Diesel Amazon vents the fuel tank through the cap alone, or if it has another vent somewhere else?
I opened my cap to refuel today and there was a lot of vacuum behind the cap. I’ve been having the yellow engine light coming on and loss of power so hoping that might be the issue. Clinging to straws!!
Many thanks
 
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