gas mileage problem

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gas mileage problem

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Hyundai >> Vehicle Line Up >> Hyundai Elantra >> gas mileage problem

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gas mileage problem - 8/8/2006 5:13:18 AM

kuyi84

Posts: 17
Joined: 3/14/2006
Status: offline

I own an '03 Elantra gls.. and I've been getting poor gas mileage for the past while. I filled my tank a few days ago.. I've only driven about 50 miles, and already I'm down a quarter of a tank. Any ideas as to what's goin' on??

Post #: 1

RE: gas mileage problem - 10/21/2006 11:01:51 PM

Jlivan

Posts: 31
Joined: 7/11/2005
From: Ocala, Florida
Status: offline

From least to greatest check on the following: Oil, fuel filter, spark plugs & wires (distributor cap/rotor), O2 sensors, muffler, & timing belt. I say if you change the first 3 and still are having problems then maybe take it in to check diagnostics.

(in reply to kuyi84)

Post #: 2

RE: gas mileage problem - 11/2/2006 7:26:31 AM

graham7773

Posts: 12
Joined: 7/13/2006
Status: offline

Hi to Jlivan. I own a 1994 1.8litre Lantra which is the ame as the Elantra and it does not have a distributor. It has a coil pack controled by the computer. I think this setup is standard. Did Hyundai change back to distributors in the later models?

(in reply to Jlivan)

Post #: 3

RE: gas mileage problem - 11/21/2006 7:55:59 PM

gary2

Posts: 1
Joined: 10/29/2006
Status: offline

bad oxygen sensor will cause poor gas mileage

(in reply to kuyi84)

Post #: 4

RE: gas mileage problem - 12/11/2006 8:11:44 AM

LeChuck

Posts: 2
Joined: 12/11/2006
Status: offline

I don't want to scare you, but it wouldn't be the first time, that a tank has shrunken to half size. A friend of mine had this problem with his Opel Corsa and it must be an issue every now and then with many brands. Not only Hyundai.

< Message edited by LeChuck -- 12/11/2006 8:12:44 AM >

(in reply to gary2)

Post #: 5

RE: gas mileage problem - 12/22/2006 8:16:18 AM

Da_Roach

Posts: 13
Joined: 12/21/2006
Status: offline

Definitely oxygen sensor or plugs and wires. My mechanic said it is very rare for a fuel filter to go bad. I changed my Ox sensor at 80,000 miles, big difference, changed plugs and wires twice, big improvement.

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smokin v-tecs for 3 1/2 years

(in reply to LeChuck)

Post #: 6