Car smells like gas/bad mpg.

[iambape]

about 3-4 days ago my car started smelling like gas.

i rarely smell it when im in the car. windows down or up.

after having it parked for 2-3 hours in the garage it starts smelling like gas.

it was coming from under the hood.

the smell was near the intake manifold.

i also get VERY bad mpg. it was about 5-7 mpg.

i would pour 20$ and would only be able to get couple of miles.

help please.

[lightsource]

Fuel Pump - $50 - $100 (Depending on whether you get a Walboro or a Stock Pump)
Fuel Filter - $5 - $15: This filter's definitely going to give you better MPG
Fuel Tank/Pump Gasket - $10

I'd say replace your fuel hoses or check for a leak in any of them.

if the smell is coming from the intake manifold, it is either a leaking hose, or filter, or the hardline that comes from the chassis that goes into the filtration system for the dual cam.

If you're STILL having problems, you've got an injector problem, time to replace O-Rings OR the injectors themselves.

[duffman1278]

I would go ahead and replace the giant o-ring at the gas tank. You should also look into replacing the feed and return lines at the gas tank. Mine were cracked from old age and it caused fuel to leak from there.

[xdumbxguyx]

check what the said above and
since you said from the engine bay
check the feed and and return line in the engine bay
make sure when you buy a replacement hose
that its a fuel line 5/8"
and maybe a new gas cap

[jimmytango00]

im having the same problem but mine is from the trunk.

[lightsource]

im having the same problem but mine is from the trunk.

If yours is frm the trunk, then it's either the gas tank/fuelpump gasket AND OR a cracked/leaking fuel line coming from the fuel pump, I'm 100% sure either of those will be the problem.

Funny thing about this is that when I had my tank/pump gasket missing, I opened up the tank to see if it was there (which it wasn't), I pulled the pump out and sure enough the gasket was wrapped around the pump.

[iambape]

i dont see any leak at all thuogh.

but imma go check the hoses today.

thanks.

someone also said something about the canister.

could that be the problem as well?

[lightsource]

well a leak is PROBABLY not your problem.

'canister'? what 'canister'

[MavericStephenc]

I'm having similar issues, could an old fuel pressure regulator be to blame?
I have replaced the fuel pump and the fuel filter, mabye I should look at injectors

[demonspeed]

+1 my car smells like gas too but my mpg hasn't gone down O_O ive already checked the fuel pump and filter so i guess its injector time for me, lol

[ericcastro]

Most all of your problems are the soft line.

In the front, it will be the one right under the fuel filter canister thing.
these are cracked on half the old 240's you tech at the track.
just reach under the canister thing and rub your hand along the bottom of the rubber line there.
Bunch of moist dirt and crap on your hand huh?
replace it.

In the rear, its one of the 2 lines coming out of your fuel pump.
you can get a look at most of it by looking at it from underneath with a flashlight.
Or take the cover off and look at it from above.
Its probably cracked where it hooks onto the fuel pump.

Both are extremely common.
The other problems are more rare.

[jspaeth]

about 3-4 days ago my car started smelling like gas.

i also get VERY bad mpg. it was about 5-7 mpg.


help please.


1) Stop farting in your car

2) Ease off the gas.

Just playing man.

[Dream240]

well a leak is PROBABLY not your problem.

'canister'? what 'canister'

I hate to break it to you, but a leak is most definitely his problem. If you smell pure gas coming from the intake mani side of your car....HELLO....leak!

Your fuel lines run from back-to-front on the passenger side, so you're leaking fuel from a bad hose/clamp. Worse case it's your injector seals.

You need to start your car, have the front end lifted up, get under there with a flash light and look for the wet spot on the fuel lines. It shouldn't be hard to find if you're getting only 5-7 mpg, you've got a bad leak.

As for the stuff that others mentioned for you replace, that's all fine and good for improving MPG, but not a leak. The only way your fuel filter is going to be the culprit is if it's been punctured somehow. (runaway screwdriver?)

Also someone else mentioned fuel smell coming from inside the car, if this is the case, you've got a leaking fuel pump cover gasket, or it's improperly sealed. simple.

Get to checking and save that Petrol!

GL

[ericcastro]

I hate to break it to you, but a leak is most definitely his problem. If you smell pure gas coming from the intake mani side of your car....HELLO....leak!

Your fuel lines run from back-to-front on the passenger side, so you're leaking fuel from a bad hose/clamp..........
As for the stuff that others mentioned for you replace, that's all fine and good for improving MPG, but not a leak. The only way your fuel filter is going to be the culprit is if it's been punctured somehow. (runaway screwdriver?)

GL
YUP
Let us know the results.
Takes 5 minutes to look

[iambape]

thanks guys.

just bought another fuel filter (300zx) and i found a cut in one of the hoses.

replaced it.

imma see if the mpg improved or not

thanks alot guys

[Bigsyke]

Why does every body say a fuel filter will increase gas mileage? Somehow by increasing the strain on the fuel pump is going to open up the injectors or something?

[Max_PSi]

Why does every body say a fuel filter will increase gas mileage? Somehow by increasing the strain on the fuel pump is going to open up the injectors or something?

I would think by replacing an old clogged filter it would be less of a strain on the pump.

[J40sx]

check under your car for gas leaks, mine leaked under where the gas tank was at, it was the fuel pump lines to the gas tank if i remember, and yea it smells of gas and bad gas mileage.

look under the car if it leaves a puddle of gas or see if you can catch it dripping mine did!

[FaLKoN240]

iambape I would like to meet you one day for dealing with all the bullshit you've been through in that damn car.

[iambape]

LOL..

ever since i lefted NCD

there would be a problem everyday.

but rather than before i did research first lawlz.

finally smell is gone.

edit* there was no leak besides the one near the fuel filter.

i never see any liquid on the ground.

[FaLKoN240]

LOL..

ever since i lefted NCD

there would be a problem everyday.

but rather than before i did research first lawlz.

finally smell is gone.

edit* there was no leak besides the one near the fuel filter.

i never see any liquid on the ground.

Gas evaporates quickly.

If you have visible gas leaks, you shouldn't be driving that thing around.

[iambape]

^^ got it fixed.

i dont smell nor see the gas anymore.

[grnappletree14]

^^ got it fixed.

i dont smell nor see the gas anymore.

what did u do to fix it?

[ericcastro]

Good work mang :)

always feels nice to get the problem on the 240 on your first try, lol

[iambape]

lol thanks.

uhh, well i replaced all the hoses (does the hoses diameter have to be exact ?)

and changed the fuel filter.

driving it around later see my mpg is okay.

[Max_PSi]

I had a hard time trying to find metric sized fuel line, but the closest size I could find was 5/16th's ID. Personally I would try to keep the hoses I use to as close the diameter of the hardlines/filter as possible.

[iambape]

mine was like .. - that much smaller than the orginall

should that be fine?

[Geezy]

i'm having the same problem right now, and i know its coming from my gas tank.

the fuel pump gasket, where can i get one? i know autozone only sells it with their replacement fuel pump kit.

[DALAZ_68]

i'm having the same problem right now, and i know its coming from my gas tank.

the fuel pump gasket, where can i get one? i know autozone only sells it with their replacement fuel pump kit.


gee...i dunno...i just wish car makers would supply parts for there own cars... :faint:

there 10 bucks...

[rb26man]

^^^^ lol thats funny

[Geezy]

genius!!
+1