When I open the gas cap....WHOOSH!
#1
When I open the gas cap....WHOOSH!
There's a serious suction whoosh whenever I open the gas cap of my 91 SE. Could I be experiencing vapor lock or is this common for Max's? I'm not experiencing any idleing problems or major lack of power ( other than the fact it's a VG ) although my fuel milage isn't the greatest.
#5
I believe you'll hear that whoosh when your tank is low.
If you check your tank when there lots of gas in it, there either wont be that sound or it will be less noticable.
I always thought it had to do with the pressure built up in the gas tank.
If you check your tank when there lots of gas in it, there either wont be that sound or it will be less noticable.
I always thought it had to do with the pressure built up in the gas tank.
#7
Max's have a pressurized fuel system, that whoosh is a good thing... Mine hasn't done it for a while, and now that I've figured out the trick to locking my gas cap every time, it pressurizes, and I went from 14 gallons getting me 300 miles to 14.5 gallons getting me 350-380 miles.
#8
That woosh is the fuel vapors escaping from the tank. Yes they will probably be worse on a hot day and if you were throwing your car around corners. Its almost the same as shaking a bottle of pop the bottle builds pressure and once you open it it releases it. Its quite normal and not to be worried about unless you are having a smoke while taking it off
#11
Originally posted by Mizeree_X
Isn't it the sound of air rushing in? The pump is pumping fuel to the engine, therefore the fuel tank experiences a vaccuum as the headspace grows larger and the pump draws fuel away
Isn't it the sound of air rushing in? The pump is pumping fuel to the engine, therefore the fuel tank experiences a vaccuum as the headspace grows larger and the pump draws fuel away
#12
glad some1 posted about this cause i find it strange that my tank only "whooshes" about half the time, and my tank is always near emtpy when i fill it (less than a quarter tank) very strange, i was wondering that maybe the gas i use has something to do w/ it (as i use different brands, im not picky) hmmmmmmm
#13
What's the Trick?
Originally posted by Taegost
Max's have a pressurized fuel system, that whoosh is a good thing... Mine hasn't done it for a while, and now that I've figured out the trick to locking my gas cap every time, it pressurizes, and I went from 14 gallons getting me 300 miles to 14.5 gallons getting me 350-380 miles.
Max's have a pressurized fuel system, that whoosh is a good thing... Mine hasn't done it for a while, and now that I've figured out the trick to locking my gas cap every time, it pressurizes, and I went from 14 gallons getting me 300 miles to 14.5 gallons getting me 350-380 miles.
#16
Re: What's the Trick?
Originally posted by male
I lost my cap (drove away with it on the roof, doh! smoked that one away!) replaced it with a Stant replacement. I get about 350 miles on a full tank. So what's the trick to locking it, just turn till it clicks a few times right?
I lost my cap (drove away with it on the roof, doh! smoked that one away!) replaced it with a Stant replacement. I get about 350 miles on a full tank. So what's the trick to locking it, just turn till it clicks a few times right?
#18
Originally posted by eric93SE
I remmember reading that when closing the gas cap that you should do 3 clicks (normally). Thats what I've always done. I gonna try four and see if there is any diff.
I remmember reading that when closing the gas cap that you should do 3 clicks (normally). Thats what I've always done. I gonna try four and see if there is any diff.
#19
Originally posted by awsm66
Man yall are carefull. When I put my cap on I just turn real hard and let it click several times (after all it is a clutch type deal to prevent over tightening)
Man yall are carefull. When I put my cap on I just turn real hard and let it click several times (after all it is a clutch type deal to prevent over tightening)
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