Crankcase (pcv) Problems of Kia Motor Optima

Engine is failing and using over 3 quarts of oil every 700-100 miles. Spark plugs have become oil fouled and replaced all 4 spark plugs June 11th, 2024 and replaced all 4 spark plugs again January 12th, 2025. Today July 7th, 2025 check engine light came back on with engine misfire code p0303 cylinder 3 misfire, changing spark plugs again today. My safety is put at risk because oil consumption is a know issue with kia gdi engines. At any moment my car can run out of oil if it is not check every other week causing my engine to completely fail or a spark plug become oil fouled and a spark plug needing to be replaced. In July of 2024 when this happened I was on the highway going 70 mph and my car just completed shut down. I could have been seriously injured had I not been able to pull over and only been 5 miles away from my home. I called kia today to start an oil consumption test, stated I am the 2nd owner and while this is a known issue I will pay for and upper engine clean which is only a band aid. This problem has been confirmed with kia that the gdi engines are consuming oil. I have also replaced all engine coolant, coolant temperature senor, thermostat as well as the pcv valve.

See all problems of the 2017 Kia Motor Optima 🔎.

This 2. 4ltr engine burns 1 quart per 1000 miles! 53769 miles, kia claims not under warranty and wants over 600 dollars for an engine flush! kia of port charlotte FL. They filled my oil too much! it is at least a half a quart above full! they also filled the kia with 5-30, I do understand that from book and temp. Ranges. Found pcv valve partially defective and replaced that. . . Can you help me understand why I have no warranty under 54,000 miles and why engine is not covered under 100,000 miles? also, is this defect acceptable to the ntsb? it has caused multiple accidents due too engine failure and seizing sincerely, mark t. Dorobiala !.

See all problems of the 2016 Kia Motor Optima 🔎.

The contact owns a 2017 kia Optima. The contact stated that oil was leaking from the vehicle onto the driveway of her home. The vehicle was taken to the dealer, and the mechanic stated that the spark plugs needed to be replaced. The sparks plugs were replaced but the failure persisted. On another occasion, the contact noticed that oil was leaking from under the vehicle again, and the vehicle was taken to the dealer to be diagnosed. The contact was informed that there was oil cylinder #3 spark plug. The spark plug and pcv valve was replaced; however, the failure recurred. The vehicle was taken back to the dealer and the contact was informed that the engine needed to be replaced. The vehicle was not replaced. The manufacturer was contacted and stated that the contact would receive a call back. The failure mileage was 93,226.

My car is consuming major oil. I am having to put at minimum 3 to 4 quarts of oil every 3 days. I am having major loss of power. My car has oil fouled far too many spark plugs. In the last 3 months, I have had to replace the spark plugs three separate times. Within the last 3 weeks I have replaced the following: 1. Ignition coils 2. Valve cover gasket 3. Pcv valve 4. 2 separate sets of spark plugs and 1 singular spark plug for cylinder #4. My car is having a major oil consumption problem and the performance has been severely affected.

On November 16, 2020, lucy robinson was driving her 2017 kia Optima when she started seeing smoke. She pulled into a gas station and the engine was on fire. The fire department extinguished the fire. A cause and origin was conducted and it was found that the fire originated within the engine compartment. The fire was caused by the release of heated oil coming from the leaking pcv located at the top portion of the valve cover.

Excessive oil consumption. No visible leaks, took to the dealer once and they replaced the pcv valve. Since that point the car uses a quart within a weeks time. No leaks, no smoke. Used for ordinary everyday highway driving. 40 miles a day round trip.

See all problems of the 2015 Kia Motor Optima 🔎.

I was driving my car on the freeway and when the speed hit 60mph the car stalled and alot of smoke came out of the exaust. The card behind me had to slow down. I managed to pull over to the side and the check engine light came on and the car shut off. I turned it on and the check engine light was not on anymore and the car made smoke. I called comunity kia on baytown and they said there was a bad pcv valave that had to be replaced. I paid for it and they replaced it and as I drove off home the car kept doing the same and stalling. I called the dealer and they told me they had to do an oil consumption test. The first test my car was low 2 quarts and they said the car was fine. "it lost 2 quarts but we dont know where its going" I told her it didnt feel safe to drive I didnt want it to catch fire and she said the car was fine. Than I drove it 600 miles and the car threw a whole lot more smoke and the engine was knocking and I took it back to the dealer. They said it was fine and the smoke I claimed was coming out was not. That the technicians turned it on and drove it did not see any smoke. I showed up to the dealer and turned it on and smoke came out and pressed on the gas and a huge cloud came out. They told me it was unbelievable. So now they want me to get a new engine and say its because I failed to do the oilchange.

While driving 15 - 20 mph vehicle just quit in its track. Consumer had the vehicle towed to the dealer, where consumer was told that this vehicle was being recalled for the crank shaft position sensor recall 03v067000. Consumer then contacted the manufacturer, who indicated that this vehicle is not included in the recall due to VIN.

See all problems of the 2001 Kia Motor Optima 🔎.

Driver noticed that the check engine light appeared on the dashboard and remained on. Vehicle was taken to the dealer for inspection, and mechanic determined that the pcv pipe needed to be replaced, and replaced it. However, the problem recurred. While driving 25 mph vehicle stalled. The driver was not able to restart vehicle, and it was towed to a dealer for inspection. Mechanic determined that the cam shaft position sensor needed to be replaced and replaced it. However, the problem recurred.

Crankshaft sensor failed. As a result, engine stalled. A recall was issued. However, this vehicle was not included in the recall due to VIN.

I have took my car in numerous time for the squeking brakes. Also, the thermostat has been replaced for the 4th time. I have had my car since Nov of 2001. Since then I have had it in the dealer ship about 10 times. I have taken it to 2 different dealers. The brakes they just blow out and say it is mettalic dust. That I need to clear them out when the car is washed. The squeak still comes back. They have also told me it is the humidity doing this. The thermostat has been replaced for the 4th time today. Also, I have had problems with my locks and enigne light coming on all the time. I have had problems with the air bag light also. The car has been nothing but problems. I have notified the kia consumer customer services no help at all. My complaints go back about 1 yr. It all started in Jan of 2002.

03/06/02 purchased a Optima kia 2001, still under warranty until 2/6/06. Problems with airbag, engine, and locks from the date of the purchase of this car. Car brought in for airbag light problem 14 times since 2002 to present date 2005 and still not fixed as we speak. Engine brought in 6 times, and locks work when they want too. Last time service on airbag was 6/5/05 light back on. Kia knows this car can not be fixed and refuse to give me a safe car for me and my 11 year old son.