I smell gass at the rear of the car after I cut it off. What could be leaking? gas line tank to tank?

 

Get under there and check the fuel filter connections for leaks. It is right next to the exhaust system, so you need to do this right away. Another possible area of concern is the fuel tank crossover tube, but look at the filter connections first.

 

I'm not going to run it anymore until I check it out. So that is where the fuel filter is that could be it. Thanks for the input

 

I only get the smell of Gas when I give someone a ride

 

http://forums.corvetteforum.com/c5-g...illing-up.html

 

I checked in to this today and yes it was leaking on the exhaust at the connection to the fuel filter. I ques they are a push in snap connector because this all I did and checked it again went for a ride checked again all ok. Should I be worried about this coming back??

 

Did it 'click' when you pushed it back?

 

yes and before it had some play in it and seems tight now so I'm hoping for the best.

 

Cool. Please watch it closely for a couple of days for any fresh fuel getting out. Fuel and exhaust pipes do not get along for obvious reasons.

 

This is a '97 problem. I see you have a '97 as do I. I have had this problem happen twice since I have owned the car (and I got it in '01).

It is a blown-out O-ring on the fuel filter. DO NOT DRIVE THE CAR! The leak is coming down over your muffler and can easily start a fire!! Later year C5's have a different style fuel filter and don't have this problem like we do.

Here is a post I made about this topic back in 2003:

I jacked the car up, dropped down the aluminum pan covering the fuel lines, and then pressurized the system by turning the key to the accessory on position. It was very obvious where the fuel was leaking from, it was pouring out of the quick disconnect fitting on the fuel filter. So I took out the fuel filter and noticed that the secondary O-ring (yellow one) had popped out of it's groove. I probably could have just pushed it back into the groove and been fine, but for the mere $16 it costs to buy a brand new fuel filter and feel safe I felt it was worth it. So I bought a new fuel filter, put things back together, started it up, and no fuel leak! If only every problem with these cars was so easy to fix!! Here are two pics of what went wrong:

Here is a picture of the old vs. new fuel filter. It's pretty obvious that the O-ring was blown out of it's groove.



Here you can see how the fuel was spraying onto the hot muffler... I feel very lucky that I didn't have a fire.
The only way I can reason that this happened, is that the FMU increased the line pressure on the fuel feed so much that the O-ring couldn't take it and gave way. That's a scary thing. I wonder how many PSI that FMU is jacking it up?!? Time to ditch the bandaid FMU and spring for some nice 42# injectors & dyno tune.



-------------------------------

Lastly, here is a link to my old post on the topic, but the pic links don't work which is why I reposted them above. But some more info here:

http://forums.corvetteforum.com/c5-t...-rear-end.html

 

If you're not, you are a better man than me.

 

After seeing JCOB2 post I went and got a new fuel filter it was only $18 and not worth the risk plus I did not know if it had ever been changed before. And I'm glad I did because it was not really fixed it didn't leak unless touched it then it sprayed everywhere.

I fell lucy that the car or me and the car didn't go up in smoke.

 

I'm glad you replaced it. By pushing the quick-disconnect in harder on your old fuel filter, you may have reduced the severity of the leak by putting more pressure on the O-ring, but I guarantee that it would have come back once the car got out on the road and the fuel filter got bounced around from driving around town.

It's such a cheap fix, very cheap insurance against a potentially deadly problem, and good preventative maintenance at the least! Over the years I have seen these posts come up quite a few times on 1997 C5's - enough that I personally believe this is a serious design flaw and am shocked that there has not been a recall due to the serious life and safety issue at stake. The O-ring groove is either inadequate to retain the O-ring, or something changes over time from being in contact with fuel, etc... When it happened to me, I initally thought it was because I was using an FMU and putting to much backpressure on the fuel supply line. This would obviously be pushing the O-ring beyond the pressure limits intended by GM, so I figured it was my fault. But I keep reading about rather stock '97 C5's with stock fuel pressures getting this problem.... not cool.

Glad it turned out good for you!

 

I agree and think you were wise to change it out.

 

I didn't know anything about this problem on the early C5 so thinks for the help and I will keep this in mind. I think it is a serious flaw I wonder how many have gone up in flames because of this? if any?

The forum helped me out with this one thats

 

You are a better man than I (not me)