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| Home > Help Needed / General Tech Chat > Pressure is building up in my fuel tank | |||||||
 3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
19th Mar, 2005 at 11:51:56pm
just wondering, im using a mpi/spi tank and when ive just been driving it for a couple of hours and i open the cap to fill up, theres a loud whoshing noise, as if air is rushing in. Whys the pressure building up so much? I thought it was supposed to be vented? I blew through the pipe that comes out of the top and it seems to be clear! Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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Forum Mod  4828 Posts Member #: 154 Post Whore Midlands |
19th Mar, 2005 at 11:59:07pm
no idea, its usually the breather being blocked that causes it, was the pipe kinked anywhere or caught under anything?
On 20th Oct, 2015 Tom Fenton said:
Well here is the news, you are not welcome here, FUCK OFF. |
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Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
20th Mar, 2005 at 12:34:35am
Yes should have a breather off the tank. Or alternatively get a fuel cap off an estate as they are a vented cap as standard as the estate/van tanks do not have a breather.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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71 Posts Member #: 316 Advanced Member Staffs |
20th Mar, 2005 at 09:06:38am
yes i have mpi tank in my mini and that does it. |
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 1014 Posts Member #: 238 Post Whore essex |
20th Mar, 2005 at 10:04:49am
my tank also does this.... ““A turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.”” - Jeremy Clarkson
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 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
20th Mar, 2005 at 11:54:37am
Vapor lock don?t worry about it
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485 Posts Member #: 149 Senior Member Alberta, Canada |
20th Mar, 2005 at 05:48:49pm
On 20/03/2005 11:54:37 benross said:
Vapor lock don?t worry about it On a tank with a vent pipe are you sure that?s possible?? (I'm not sure it is) unless the vents blocked in some way. I would say that it's all to do with the tank coming from an emissions car and if I?m not mistaken doesn?t the vent have to go back to the inlet or some form of carbon canister to stop the fuel vapors venting into the atmosphere. Just my 2 pennys worth. :) Edited by Doodmeister on 20th Mar, 2005. Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe. |
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9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
20th Mar, 2005 at 06:05:54pm
feeb: stated that the pipe seems to be clear!? (or is it!)
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3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
21st Mar, 2005 at 08:53:17pm
Yep blew down it and no restrictions! Wierd!
Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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 2909 Posts Member #: 83 Post Whore Glasgow, Scotland |
22nd Mar, 2005 at 07:22:15pm
you tried suckign thro the pipe to se if it has a 1 way valve hidden somewhere !? turbo 16v k-series 11.9@118.9 :)
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