Fuel Rail Problems


Asked by pam711 Jul 14, 2013 at 02:12 PM about the 2004 Kia Optima EX V6

Question type: Maintenance & Repair

it is not getting fuel to the fuel rail. What is wrong?

6 Answers


Check for fuel pump operation and or pressure

2 out of 2 people think this is helpful.

Remove the gas cap and put your ear close to the filler tube. Have a helper turn the ignition on but DON'T crank the engine. You should hear the fuel pump run for about 3 seconds. If not, replace the gas cap and using a hammer, hit the bottom center of the gas tank while your helper tries to start the engine. Don't beat the tar out of it, just 3 or 4 whacks will do. If the engine starts you need a fuel pump. If not, check your fuel pump fuse and fuel pump relay. HTH. -Jim

1 out of 1 people think this is helpful.

if hitting the fuel tank with a hammer worked....why does this mean i need a new fuel pump?


Because the electric fuel pump is in the gas tank. It's basicly an electric motor with a fan (impeller) on it. It stopped working because the motor is worn and hit a "dead" spot. By banging on the gas tank the vibration jarred the motor and moved the insides of it past the dead spot and it started spinning and pumping gas again. Very glad it worked!! HTH. -Jim

1 out of 1 people think this is helpful.

IT worked, just like you said! thanks...now, I have to replace the fuel pump...can I axcess the pump through the back seat on a 2006 V6 LX?


I don't really know on your specific car. Some vehicles have an access panel on the trunk floor or under the back seat. Others require the gas tank to be removed. HTH. -Jim

Your Answer

Add photo

Related Questions

Looking for a Used Optima in your area?
CarGurus has 39,001 nationwide Optima listings starting at $2,400.

Search Kia Optima Questions

Kia Optima Experts

#1 Tom Demyan
Tom Demyan
Reputation 760
#2 tenspeed
Reputation 250
#3 kc07kia
Reputation 240
View All

Related Models For Sale

Used Hyundai Sonata"
880 Great Deals out of 60,108 listings starting at $1,595
Used Honda Accord"
1,118 Great Deals out of 71,375 listings starting at $1,200
Used Nissan Altima"
994 Great Deals out of 71,969 listings starting at $400
Used Toyota Camry"
1,207 Great Deals out of 76,684 listings starting at $800
Used Ford Fusion"
1,075 Great Deals out of 64,890 listings starting at $1,950
Used Nissan Maxima"
350 Great Deals out of 20,394 listings starting at $399
Used Chevrolet Malibu"
1,015 Great Deals out of 63,155 listings starting at $1,000
Used Kia Sorento"
458 Great Deals out of 34,624 listings starting at $960
Used Honda Civic"
769 Great Deals out of 60,958 listings starting at $399
Used Mazda MAZDA6"
185 Great Deals out of 15,931 listings starting at $1,250
Used Chevrolet Impala"
1,453 Great Deals out of 47,781 listings starting at $995
Used Hyundai Elantra"
630 Great Deals out of 43,556 listings starting at $650

Used Cars For Sale

2015 Kia Optima For Sale
43 Great Deals out of 27,910 listings starting at $13,273
2014 Kia Optima For Sale
65 Great Deals out of 2,389 listings starting at $11,998
2013 Kia Optima For Sale
212 Great Deals out of 4,509 listings starting at $9,433
2012 Kia Optima For Sale
103 Great Deals out of 2,117 listings starting at $9,495