Author Topic: Petrol Gauge going up  (Read 113 times)

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Offline vdubdave

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Petrol Gauge going up
« on: September 17, 2017, 09:26:03 pm »
I've got a weird problem - I was driving Saturday morning with about 3/4 of a tank of petrol in the super 4 motion.

And as I drove west out of Auckland the fuel gauge slowly went up not down...
So I stopped and undid the petrol cap, and the level fell to 1/2 (like it should have done)...

Hasn't happened since (but I've not quite screwed the cap on fully)..

So - any ideas what could be pressurising the tank?
Also - how is excess pressure normally vented?

Probably have a stuck valve...
82 GTi Cabriolet EG engine
82 GTi Pretender PG engine
03 Supercharged V6 24v 4 Motion

Offline spooln

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Re: Petrol Gauge going up
« Reply #1 on: September 18, 2017, 07:51:01 am »
Weird. But if your tank is self filling share that trick around!
77 CS1 Fiat Spider. 78 Mk1 Scirocco. 83 Mk1 GTI.12 Abarth 595C Competizione, 17 XC90 T6 Polestar.