fuel tank question.

coxie

New Member
i went to fill up with optimax earlier tonight and when i unscrewed the petrol cap there was a loud hissing noise as if pressure was built up in the tank.i have never noticed it so loud before if at all.why did it do this :?:
 

andygtir

Member
yep, all perfectly normal. just means you've got a good vacuum around your filler cap - i.e no fuel can escape!
 
J

J-GTi-R

Guest
that is indeed just pressure releasing from the petrol tank. Don't worry, perfectly natural.
 
J

Jamie_GTIR

Guest
mine does the loud hissing noise every time i fill up
does anyone else get scared they are gonna forget to put the petrol cap back on and leave it at the petrol station
i only ask cos ive done it before with a micra and had loads of fuel splashing out when going round bends, not good!
 
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