Strong Gasoline Odor, No Dripping! - Kia Forum
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#1 (permalink) Old 11-27-2005, 10:08 AM
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Hello everyone

Ever since I bought the car back in 2003 I've been having difficulty with fuel consumption and strong gasoline odor when the car is running. At first I would get about 100 miles to a full tank! What I would notice also was a strong smell of gasoline, when the car was parked but running. Even outdoors it was pretty strong. With some modifications I have been able to increase performance to about 200 miles per tank (replacing corroded exhaust, replacing the fuel filter, installing a new performance air filter and using DynoTab when fueling up.

After several months of these changes, while the fuel efficiency has increased by 100% (not bad IMHO), I still smell gasoline in the area of the fuel cap and in the rear wheel well (driver side). Has anyone had any experience with this kind of situation?

I was thinking of replacing the fuel cap as it may not seal properly. Any thoughts on that?

Also, what is the normal mileage to a full tank of gas on a Sephia 96 1.8L? I mean, for normal driving conditions, not racing.

Thanks for any information you may have.

Pedro Maldonado
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#2 (permalink) Old 11-28-2005, 07:50 AM
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you should check and make sure the connections on the fuel filter arent leaking could be..
also maybe check the fuel injectors see if the rubber seals are leaking... otherwise maybe you have a gas tank leak??

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#3 (permalink) Old 11-28-2005, 06:11 PM
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I wouldn't hope that mods are going to take care of the odor. You might have some leak somehwere. Isn't this car still under warranty? Have it checked, car fires are not very good!!
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#4 (permalink) Old 11-28-2005, 10:56 PM
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97mov
its a 97 sephia i am betting it has no warrinty.

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#5 (permalink) Old 11-30-2005, 06:26 PM
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Quote:
Originally posted by 1fastkia@Nov 28 2005, 11:56 PM
97mov
its a 97 sephia i am betting it has no warrinty.
My bad. Lack of sleep ma...an.
Now I have a '97 and I have heard some of them have a recall on the EVAP system. Call Kia usa and give your vin and have them check it. Mine was not included. I have 90000 miles as we speak and is in good shape tune-up wise. I do mainly hwy driving, if I manage to keep the speed at 65 or less for the most part I get 34mpg. If I go my regular 75 then it drops to 30mpg. You have to average the gas mileage over 3-4 tanks. I never let it go bellow 1/4 so miles per tank is not reliable.
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#6 (permalink) Old 12-02-2005, 05:18 PM
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You can try a PSI (Pressurize) or KpA (Vacuum) test on the tank starting with a good sealed cap with a hole drilled through the middle of it in addition with a length of pipe coming from the cap. Use a low regulated compressor for PSI or a shop vac for KpA. I found a down spout leak in a very old Accord just where the down spout and tank met using this very same method.
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#7 (permalink) Old 01-08-2006, 09:31 PM
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Hello, I have a 2001 Kia Sephia which was giving me terrible gas smell problems starting this winter. I looked in the engine compartment and did not see any gas leaks. The information on these forums helped me find out exactly what was wrong with my car. I found that the fuel pressure regulator (located on the fuel rail/distributer) was leaking. I tried fixing this regulator but was unsuccessful. I was surprised to find the exact replacement part from the local Kia Dealer. I paid around 42 dollars. It looks likes this is a common part that goes bad. I was hoping that the new part would have a new design, but it did not. I replaced the part (had to remove two screws only). I also replaced the fuel hose (provided with fuel-type-quick-connects) with a regular 5/16 in. I.D. fuel hose since this original connection did not look in the best of shape. The length of the hose was about 13 in. I made sure I provided good sealed connections with screw-type hose connectors. You may want to leave the original hose if you do not feel comfortable changing the hose. You will however, need special plastic fuel hose disconnect tools to disconnect the regulator from the original hose. These disconnect tools can be purchased from any auto parts store, aroung 15 dollars. I had to reduce the size of the plastic disconnect tool (by cutting it) in order to get it to fit. Anyways, after the installed the new fuel regulator and installed the new hose, the fuel smell was gone! I originally was going to replace the fuel injector o-rings but I did not see any signs of fuel around the fuel injectors.


I hope I provided you with some good information.
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#8 (permalink) Old 01-15-2006, 07:28 AM
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hey engineer the 98-01 sephias are 2nd generation sephias you posted your info in the wrong generation car.. they are totally different...... so this does not apply to the 97 sephias..

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#9 (permalink) Old 04-12-2006, 01:59 AM
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320 miles on average to a tank.

The factory gas cap is a piece of crap. So is the radiator cap for that matter. Both of mine failed after less than 3 years.

In the case of the fuel cap, the CEL illuminated with an evap system fault and there was a fuel odor near the rear of the car. I replaced the cap and after three drive cycles the CEL went off and has not been on since(about to turn 96k on my 97 sephia).

Chris
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#10 (permalink) Old 04-12-2006, 02:04 PM
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Originally posted by halatos@Apr 12 2006, 01:59 AM
320 miles on average to a tank.

The factory gas cap is a piece of crap. So is the radiator cap for that matter. Both of mine failed after less than 3 years.

In the case of the fuel cap, the CEL illuminated with an evap system fault and there was a fuel odor near the rear of the car. I replaced the cap and after three drive cycles the CEL went off and has not been on since(about to turn 96k on my 97 sephia).

Chris
96200Miles here on '96 and get 34+ MPG on freeway driving 70-75mph.
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