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  1. 3rd Generation Optima (2011 - 2015)
    My 2013 Kia Optima LX lost power doing 75 mph on the freeway. No Acceleration, just completely lost power. After barely getting across to the shoulder had it towed to my mechanic. After reading a lot of post about others losing power I feared the worst. Engine failure or something else...
  2. 4th Generation Optima (2016 - 2020)
    Just curious about that, folks. Zero issues with this car with regular fuel (always use Shell or Chevron), thankfully, but just curious if there's any noticeable difference with premium, like it's the case with most turbos. I was surprised not to see any reference to premium fuel in the owner's...
  3. 4th Generation Optima (2016 - 2020)
    I plan on taking a 1,000 mile trip in the near future. Just wondered what I could expect for fuel mileage with our 2019 Kia Optima LX with 2.4 engine? I should average 70 mph because the road is near empty of traffic, and 70 mph will be a good speed to enjoy the scenery. The manual on the Kia...
  4. The Service Center
    Hi, Hoping someone may be able to help with an issue having with our 2013 Kia Optima EX. Gas gauge quit working and threw a check engine light saying the fuel level sending unit was the issue. Took a look in the trunk to find out something chewed through a wire and it was missing a section and...
  5. 3rd Generation Optima (2011 - 2015)
    Hello, Some said filling up full all the time will get lower fuel economy due to no space for evaporation (EVAP systems) to work? And also car is heavier with full tank and engine has to work harder, so that we get lower fuel economy? Are they true? Just wondering if you fill up to full all...
  6. New Member Introductions
    I have an 2019 Optima EX with the 1.6T and I seen several places on the internet people having issues with fuel dilution of the engine oil. Is this common with the 1.6? Most of my driving is highway driving, my commute to work is 52.5 mi each direction, about 55 min drive. Should I be...
  7. Engine and Technical Discussion
    NEVERMIND i got my questions answered.... Hey everyone, So my car is leaking fuel in the engine bay. Took my car in to the dealer and the guy that was helping me didn't seem very intelligent in what he was talking about. First he gave me an update saying that it was my low pressure fuel line...
  8. The Service Center
    Hey all, I have a failed fuel level sensor which I believe is part of the whole fuel sending system/float/etc. Is this a repair that is reasonable/practical/relatively simple to DIY? Or does the tank have to be dropped? Would it be something to just bite the bullet and have done? Thanks all!
  9. 3rd Generation Optima (2011 - 2015)
    Does anyone here know *officially* approximately how much fuel is (supposed to be) remaining once the low fuel light/warning comes on? I ask because IMHO I think Kia programmed it to be a bit conservative as to how much fuel is remaining once the warning appears--in my case, the low fuel light...
  10. Vendor Deals
    <p class="p1">A clean engine is a more efficient engine (and also a more powerful one), so a fuel injector cleaning is an important part of maintaining your car. While you can always visit a mechanic to get this service done, this is actually one of a few maintenance items that are pretty...
  11. Engine and Technical Discussion
    Just got my Safety Recall notice (#18V907) in the mail concerning the High Pressure Fuel Pump (HPFP) fuel pipe that has been suspected of causing engine fires on cars who have had the engine replaced (via #17V224) due to being "damage, misaligned or improperly torqued during the engine...
  12. The Service Center
    2015 Optima EX 2.4L gdi black 38,000 miles Symptom: battery died a couple weeks ago - around 3.5 year old so bought a new battery. Last week, Thursday battery was dead again after 1 day parked. Scheduled service, dropped off this morning. Had noticed in the last month the fuel pump running...
  13. Kia Optima News, Rumors and Updates
    Read more about the Top 15 Best Fuel Injector Cleaners at AutoGuide.com.
  14. 4th Generation Optima (2016 - 2020)
    Hi, I have a 2016 Kia Optima LX+ (2.4L) and recently filled a couple of tanks of premium 91 fuel from different stations and was blown away with the results. I always thought that premium fuels were a waste of money, however now I'm starting to question this. With Regular 87 I get: (from...
  15. The Service Center
    I have one big problem with my 2012 SX tgdi. When I drive car it doesn’t matter how far I don’t have any worries about. But when I for example stack in traffic the high pressure pump get over heated and shut down the engine. I must manually cool down this pump to drive. What do u think? What...
  16. Engine and Technical Discussion
    Hey so a local gas station to me recently started carying E85, does anyone know of a good flexfuel kit for a 2012 optima lx. I found one on change2E85.com
  17. New Member Introductions
    Hi, Fellas, good day to you. My battery got disconnected right before my inspection was due. What are the chances. Now I can't pass the inspection. I put on like 700 miles but still sensors not ready. I am afraid to reset, because I can make it even worse. What would you suggest? Thanks...
  18. The Service Center
    Hey guys. I dropped a bottle of Techron into the tank before a fill up. I had two bars left when I did so. Today, my instant fuel gauge was way off. At idle the bar was rising close to 10L/100km. At barely half throttle the bar was showing I was flooring it. Is this normal while the techron...
  19. 3rd Generation Optima (2011 - 2015)
    With my 2015 SX-L the warning light would come on when the display said there was about 30 miles or so predicted to be left and then that estimation would go away and not show any numbers anymore. If I went 30 or so miles though and then fill up I could put in about the full capacity minus about...
  20. Engine and Technical Discussion
    Not really a full blown diy post. I wasn't going to give the dealer $1000 bucks to replace it. from Amazon, $29 custom brand, nissan e2068 fuel pump fits my 2011 Korean optima 2.0 with some minor fitment issues. Those issues being that the outlet port has barbs that need to be sanded off for a...
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