Fuel Pressure Problem

m0rpheus666 · Post by **m0rpheus666** » July 25th, 2007, 12:03 am

Everytime i go to put gas into my car there is alot of pressure that is released from the tank. I mean a lot of pressure, more than normal. I have read that high fuel pressure will cause bad gas milage and just needing to know what i can do to correct this problem.

Limegreen mx-3 · Post by **Limegreen mx-3** » July 25th, 2007, 1:35 am

are u letting ur gas tank go to emtpy a lot lately.

xboxlivemonkey · Post by **xboxlivemonkey** » July 25th, 2007, 1:56 pm

how do you know if there is too much pressure ?

Bochek · Post by **Bochek** » July 25th, 2007, 2:45 pm

usually its not pressure... but a vacume.

m0rpheus666 · Post by **m0rpheus666** » July 25th, 2007, 10:13 pm

It is going to pretty close to empty the last couple of times, and im sure its not a vacuum i feel air coming out when i undo the gas cap.

xboxlivemonkey · Post by **xboxlivemonkey** » July 25th, 2007, 11:41 pm

when my tank is almost out , my car starts to shake

is that normal ?

Limegreen mx-3 · Post by **Limegreen mx-3** » July 26th, 2007, 2:19 am

gas keeps the car going. wouldn't u think.

xboxlivemonkey · Post by **xboxlivemonkey** » July 26th, 2007, 11:41 am

[quote="Limegreen mx-3"]gas keeps the car going. wouldn't u think.[/quote]

no i mean my tank is over a wuater full not on dead line

m0rpheus666 · Post by **m0rpheus666** » July 26th, 2007, 7:08 pm

thanks for hijacking my thread, should i be worried about this pressure build up? My car seems to stumble and run rough when it builds this pressure up but if release the pressure my car seems to run better and idle alot smoother. Is there something wrong with the evap system? How can i test this?

jimpuntoy · Post by **jimpuntoy** » July 26th, 2007, 7:18 pm

im sure this is normal a few of the cars i have owned have had pressure escaping when i take the cap off, this usually happens when its nearly out of petrol and it hasnt been opened for a few days