How does breather work on fuel tank

Mike F

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Fitted 1100 plastic tank to 2202 1159 GSA

Anything over 1/2 tank and it weeps a little petrol

comes from the big circular inspection plate on inside of tank (got the pump and a load of gubbins behind it).

Put a new o ring seal in.

Everyone says 1100 and 1150 seals are the same.

Been messing around and it seems there is pressure blowing it out. Why is there pressure, shouldn't breather take care of it.

Where is breather and how can I check its breathing. Is it in the petrol cap?

Tnx m
 
comes from the big circular inspection plate on inside of tank (got the pump and a load of gubbins behind it).

Put a new o ring seal in.

, shouldn't breather take care of it.

Where is breather and how can I check its breathing. Is it in the petrol cap?

Tnx m

The breather pipe runs through the big circular plate. Perhaps you've twisted the pipe when you removed/replaced the big circular plate
 


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