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Hyundai Sonata Fuel and Fuel System Questions

55 messages,  Last post on Oct 02, 2009 at 6:38 PM

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What is this discussion about? Hyundai Sonata, Fuel System, Fuel System, Sedan

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#46 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [jlindh] by huntet02 Apr 09, 2009 (6:32 pm)
Replying to: jlindh (Apr 05, 2009 7:18 pm) I think the past maintenance on my car is an important factor here and maybe it just didn't have all the maint. flushes and things it needed to run right, I think theres a lot of Maint things recommended by Hyundai that have never been done. Carmax where I bought it. put a new air cleaner in it and want me to drive though 3 tanks of gas and then report back to them. I won't let them off the hook. Then their mechanics who we never get to talk to say my bra on the front (thats made specifically by Hyundai) is lowering my gas mileage...BS!! Maybe 2mpg but were off at least 6MPG here....I'm still only getting today 21MPG unnaceptable!! My local Hyundai dealership says the bra should not make any difference and that they could run some DG fuel cleaner through it and a few other things that would definetly make it run like it should but it would cost $600+ and I'm out of warrantly at 60K but Carmax will make it right. So when their "new air cleaner" doesn't do much I'll be tellling them it needs to go to Hyundai. Replies to this message: jlindh (Apr 10, 2009 6:24 am)
#47 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [huntet02] by jlindh Apr 10, 2009 (6:24 am)
Replying to: huntet02 (Apr 09, 2009 6:32 pm) I'm thinking that you might have misunderstood my posting. 25 mpg for an entire tank is doable on my car, but it takes a LOT of effort. If you're using gas with ethanol, don't have the tires overinflated, are in a location that still is selling the winter gas formulation, drive much in the city, don't use cruise control, don't baby the accelerator from a stop, don't try to avoid full stops whenever possible, don't coast up to stop signs and aren't using synthetic oil, 21 mpg might be a reasonable mileage.   I went so far as to purchase an add on "ScanGauge" to show the instantaneous mileage the car is getting and indicate the best techniques to use. Based on my experience, I would guess that my efforts might be netting 3 mpg above my former driving style.
#48 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [huntet02] by targettuning Apr 10, 2009 (9:56 am)
Replying to: huntet02 (Apr 05, 2009 1:56 pm) "I could be driving what I really like/want (truck) at this kind of gas mileage"  I don't think that any truck can AVERAGE over 20 mpg over an entire tank or tanks. That would mean a large portion of the tank (1/2) would be at the middle to high 20's range and I just don't see any truck doing that. I was just wondering if you are resetting the dash fuel economy readout after each fill-up? Otherwise the average can decrease as time goes on with differering driving situations cutting into the average currently showing. Reset for a fresh perspective at each fill-up. I don't think a 22 mpg average is to bad with a V-6 ...think of it this way if you get 19 city and 26 highway the average for that tank is 22.5 mpg.
#49 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [jlindh] by ray78 Apr 10, 2009 (3:36 pm)
Replying to: jlindh (Apr 05, 2009 7:18 pm) I drive 60 MPH and no jackrabbit starts and no skidding stops. Also most of my driving is on 4-lane highways. I also check my mileage at fillups. Replies to this message: jlindh (Apr 10, 2009 6:36 pm) ray78 (Apr 13, 2009 7:22 pm) jlindh (Apr 14, 2009 5:46 am) and 1 more...
#50 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [ray78] by jlindh Apr 10, 2009 (6:36 pm)
Replying to: ray78 (Apr 10, 2009 3:36 pm) Ray, are you saying that you got 31 - 34 mpg when you checked your mileage at fill ups? Replies to this message: ray78 (Apr 13, 2009 7:22 pm) jlindh (Apr 14, 2009 5:46 am) craigbrooks (Apr 23, 2009 6:01 pm)
#51 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [jlindh] by ray78 Apr 13, 2009 (7:22 pm)
Replying to: jlindh (Apr 10, 2009 6:36 pm) Yes- from Joplin, MO to Kansas City, MO and back I averaged 32.8 MPG. Replies to this message: jlindh (Apr 14, 2009 5:46 am) craigbrooks (Apr 23, 2009 6:01 pm)
#52 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [ray78] by jlindh Apr 14, 2009 (5:46 am)
Replying to: ray78 (Apr 13, 2009 7:22 pm) I think that's outstanding for a V6 Sonata. I've fueled up at a station on the highway, reset the computer, pulled onto the highway, accelerated slowly to 65 and watched the mpg gradually increase to 29 or 30 mpg. I think 32 mpg is out of the question for my car, try as i might. Replies to this message: craigbrooks (Apr 23, 2009 6:01 pm)
#53 of 55 Re: 06 Sonata getting only 20-22 MPG.....looking for answers [jlindh] by craigbrooks Apr 23, 2009 (6:01 pm)
Replying to: jlindh (Apr 14, 2009 5:46 am) Did you do the manual calcs? You might be surprised.
#54 of 55 Problem Pumping Gas by sprkgtz Oct 02, 2009 (6:30 pm)
My 08 Sonata is difficult to gas up. The gas nozzle "clicks off" every few seconds as if it is full even when the tank is practically empty. This has happened at numerous different gas stations, with different family members pumping gas. It is difficult to tell when to stop pumping gas because of this. Has anyone heard of an ongoing problem of this sort? When I spoke to the Hyundai service manager about this today, he seemed oddly eager to have me bring in the car for repair. This makes me wonder if it is anything potentially dangerous? He did mention that he has quite a few recalled Sonatas to work on right now. Recalled? What recall would that be? Did I miss something? Replies to this message: backy (Oct 02, 2009 6:38 pm)
#55 of 55 Re: Problem Pumping Gas [sprkgtz] by backy Oct 02, 2009 (6:38 pm)
Replying to: sprkgtz (Oct 02, 2009 6:30 pm) Sounds like a kinked hose to me. Or maybe the carbon canister is full of gas. Have you ever "topped off" the tank? That can force gas into the carbon canister.   The last recall by Hyundai on the 2008 Sonata was 18 months ago, for the OCS. I'd think those cars would have been fixed by now.

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