I am getting 12 mpg, I changed out my fuel filter and I'm not throwing any codes... occasionally there is a gas smell, fuel pump clicks on fine. Any ideas of what could be causing it? The car is a 94 Nissan Sentra, it should be getting 30-38 mpg

 

any sort of leaking at all?

 

only when gas tank is full, it has that odor, forgot to mention that problem

and supposebly that's when there was a little leak too

 

^

 

look at are your fuel rail...

 

looks normal

I'm about to take it in for a full diagonostic, but could still use ideas

 

I had that same problem one time. It ended up being the gas cap. Changed it and it was fine after that.

 

Check for any punctures in your tank, fill it up, turn the ignition on and off a couple times, then get under there and look around. Start at the tank and follow the line as best you can. There has to be a leak somewhere. If the car was running rich enough to burn that much fuel your car would bog like nobodys business and be smoking all day.

Edit : I see your in the 904, where you at? If you need I can take a look at it for you sometime on the weekend.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by t0eKnEe &raquo;</TD></TR><TR><TD CLASS="quote">I had that same problem one time. It ended up being the gas cap. Changed it and it was fine after that.</TD></TR></TABLE>

was there anything visibly wrong with the gas cap? That sounds weird that a gas cap could leak out a couple gallons of gas

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Edit : I see your in the 904, where you at? If you need I can take a look at it for you sometime on the weekend
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I checked aruond the fuel tank and lines there are no visible leaks/dripping anywhere... but this wasn't done on a full tank because I can't afford a full tank right now

I live in the Orange Park / Middleburg area

 

I'd say its a leak, a friend of mine had a bad one, it woudl leak just under half his tank over a day, so hed end up with like 16mpg. I'm up at 103rd, not too far if you ned some help.

 

it could be pretty much anywhere something connects in you feul system. check the drain plug, hardlines, return line, etc.
also check the injector gromets, i've had those go bad. turn the key on till the pump primes then push on the injector clips and wiggle the injector, if its bad you have anywhere from a faint smell of gas to a two foot streem spray up form the feul rail.
good luck

 

ok here's the deal, I just got back from driving around a little bit... started to smell a strong gas smell, checked around the tank and saw a pretty good sized wet spot.. It was definately gas and it was a pretty good amount of it

Any ideas on how to find the hole?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Steve90HB &raquo;</TD></TR><TR><TD CLASS="quote">

Any ideas on how to find the hole?</TD></TR></TABLE>
There is a right way, and a wrong way to do this. the wrong way would be to not take out your gas tank, the right way would be to remove it, and have it professionally sealed back up!

 

got a half tank of gas in there! anyone know what they do to "professionally" seal it?