This happen to anybody else . . .?
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Hooked
05 Px150, 74 primavera 125, Honda super cub
Joined: 08 Nov 2017
Posts: 131
Location: Ma
Sun Nov 12, 2017 12:27 pm quote
I have an 05 PX150 and after every ride I find gas on the top of the tank under the seat. No - I didn't overfill it. It happens even when I am at 1/4 tank full. The cap seems fine.

gastank.jpg
after a quick ride.

Molto Verboso
1979 P150X, 1983 P200E, 1987 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
Joined: 02 Aug 2015
Posts: 1919
Location: Veria, Greece
Sun Nov 12, 2017 12:34 pm quote
Typical. Buy a new gasket but eventually it'll happen again...
Veni, Vidi, Posti
a not so normal vbb2 '64, a weirdo vbx '86, a not so normal pts100 '82 and a red lipstick '74 sprint
Joined: 15 Jun 2009
Posts: 5671
Location: Indo
Sun Nov 12, 2017 5:59 pm quote
i put a sheet of used cloth in there just to make it cleaner
Ossessionato
2 matching N.Z. '69 VBC Super, 177cc Racer, VespaCross Bodge, Puch SRA150, Piaggio Zip 100! & others
Joined: 26 May 2013
Posts: 3963
Location: That bushfire place
Mon Nov 13, 2017 5:26 am quote
I use a rag as well...but possibly breather is blocked
Hooked
1964 v90, 1970 VBC, lots of dumb twist n go toys
Joined: 21 Jan 2015
Posts: 220
Location: savannh, ga
Mon Nov 13, 2017 6:03 am quote
It's worse when you're test riding with no seat just a rag over the tank. Ouch.
Addicted
SS208, SX250 , RD's and a K1300s and an RZ350 and TZR250
Joined: 30 Sep 2012
Posts: 567

Mon Nov 13, 2017 7:48 am quote
Is it my imagination or has this gotten much worse with the newer fuel of the last few years?
Ossessionato
Joined: 26 Oct 2015
Posts: 2505

Mon Nov 13, 2017 11:16 am quote
I have 3 different PX style fuel tanks that have the screw on gas cap. None of them leak like yours, even when filled to the brim. Order up a new gasket.
Hooked
05 vespa px150 serie america
Joined: 22 Apr 2006
Posts: 304
Location: long island
Mon Nov 13, 2017 2:46 pm quote
Not happening w mine
Ossessionato
Joined: 26 Oct 2015
Posts: 2505

Mon Nov 13, 2017 5:41 pm quote
...or maybe the cap is just plain missing the gasket?
Hooked
PX 150
Joined: 06 Aug 2007
Posts: 341
Location: Dublin, Ohio
Mon Jun 29, 2020 8:35 am quote
I know this is an older thread, but I have the same problem with my 2005 PX150. I have ordered a new gasket and it did not help at all. I then tried a new gas cap and still does the exact same thing. Does anyone know of a solution, either a cap that doesn't leak or a new gasket that actually seals. I have no idea whether the fuel is getting past the gasket, or the cap is such a poor design that fuel is flowing through the vent and spilling under the cap outside of the gasket. This happens even when there is less than half a tank f gas in the tank.
Ossessionato
Joined: 26 Oct 2015
Posts: 2505

Mon Jun 29, 2020 8:45 am quote
apex wrote:
I know this is an older thread, but I have the same problem with my 2005 PX150. I have ordered a new gasket and it did not help at all. I then tried a new gas cap and still does the exact same thing. Does anyone know of a solution, either a cap that doesn't leak or a new gasket that actually seals. I have no idea whether the fuel is getting past the gasket, or the cap is such a poor design that fuel is flowing through the vent and spilling under the cap outside of the gasket. This happens even when there is less than half a tank f gas in the tank.
Maybe check the lip on the ring of the tank to see if it's not distorted? Another idea is to get a sheet of fuel (and ethanol) resistant rubber that's a little thicker than OEM and make your own gasket.
Hooked
Joined: 22 Jul 2018
Posts: 106

Ossessionato
Joined: 26 Oct 2015
Posts: 2505

Mon Jun 29, 2020 7:12 pm quote
What?!...that looks like the winner!
Hooked
Joined: 22 Jul 2018
Posts: 106

Mon Jun 29, 2020 7:25 pm quote
Land of 10,000 Scoots Rally   Vespa Wasp Pin Badges   Cool Ass scooter seat cover
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