Hissing

Malix · 12-12-2007, 02:48 AM

Well,

Since I just started driving my car again (Still overjoyed lol) I remembered the squeaky belt, but I had forgotten about a hissing underneath rear left door, probably gas pump. Dad says it is a regular sound, but I'm not too certain.

~Malix

CharleyO99Alero · 12-12-2007, 02:54 AM

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Snakes in a car?

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AGT · 12-12-2007, 09:41 AM

I got this one mothereffer!

jayson_waltz · 12-12-2007, 10:02 AM

is it a constant hiss or just when your rpm's are up a ways?

Malix · 12-12-2007, 10:21 AM

Constant. Always there. And at times, you can smell raw gas, but we guessed that we need to change the spark plugs to eliminate the smell.

~Malix

jayson_waltz · 12-12-2007, 10:27 AM

its an air leak on the gas tank, probably the filler neck. while the car is running, there is always a little pressure in the tank. if theres a leak that would explain the hissing and raw gas smell. wired though, the service engine light will usually come on if theres a air leak. You should put the car up on a hoist while its running and see if you can tell where the hiss is coming from back there.

[ion] C2 · 12-12-2007, 10:32 AM

and don't use a match as a light to inspect with

Gr1m · 12-12-2007, 11:00 AM

i dont think you would hear the hissing if it was from where the pump assembly connected into the tank, just my $.02

Vinalero · 12-12-2007, 12:10 PM

Fuel pump always makes a small hissing when the car runs. If you turn the Key on, but not starting it, do you hear the hissing for about 4-5 seconds, then it stops?

Malix · 12-12-2007, 11:07 PM

Yea, as soon as the switch is turned on, not the car, the hissing begins, but it still doesn't stop. And when I arrive wherever I'm going to, you immediately get the gas smell. Still, no SE light will come on. Only change oil and low pressure.

~Malix

jayson_waltz · 12-14-2007, 09:23 AM

^ you know u can reset the change oil and low pressure light using the reset button in the drivers fuse panel, don't you?

Gr1m · 12-14-2007, 11:06 AM

sounds like something is wrong with the pump aseemb, is your mpg getting bad? your probably running super rich

[ion] C2 · 12-14-2007, 11:14 AM

hmm my car smells like gas a lot and i get crappy mileage, but my tune runs rich

Gr1m · 12-14-2007, 11:24 AM

Quote:

Originally Posted by [ion] C2

hmm my car smells like gas a lot and i get crappy mileage, but my tune runs rich

running rich would cause both of those

Malix · 12-14-2007, 06:17 PM

What does it mean to run rich? lol

[ion] C2 · 12-14-2007, 06:25 PM

more fuel than stoichiometric

14.7:1 is the perfect air:fuel ratio. a rich one would be like 11:1

Malix · 12-15-2007, 12:23 PM

So,

that is why we get crappy mileage and gas smells? Kinda confused, but ok. lol.

cherrington17 · 12-15-2007, 12:27 PM

^i don't think you'd have a "running rich" problem, normally. unless you were tinkering w/ your tuning, which... by the sounds of it... you don't know how to. and running rich would cause bad mph and gas smell... NOT hissing.

don't use ion's issues as a possibility....

hes special.

i'd have the fuel assembly checked out. you could also take it to a car parts place and have them check for codes... see if your computer is throwing anything. (just for fun, its always good to check)

[ion] C2 · 12-15-2007, 04:09 PM

my computer throws 0171s at me telling me i run lean hah, but i screwed things up when i tapped off the O2 sensor for my A/F gauge