2019 Kia Optima Complaint Log

On October 30th 2024, I purchased a 2019 Kia Optima from San Diego Chrysler Dodge Jeep Ram. On November 26th the car was stolen from in front of my house, while the alarm was activated and the key was in our possession. I went online to the Kia website to find some information and found that there was a recall on that vehicle to install an anti-theft device. San Diego Chrysler did not have this done. I contacted them in regards to that not being done and they replied that they offered me to purchase a GPS system. They don't seem to feel anything was done wrong but if a car has an open recall, it would seem that a dealer needs to have that done PRIOR to selling a car to a consumer who is unaware of the theft problem. I had the car for three weeks, lost my trade-in, deposit and still have it financed. Big conglomerates need to be held accountable.

I am the owner of a 2019 Kia Optima SX Turbo in Snow White Pearl (SWP) paint. At approximately 100,000 miles, I observed bubbling and peeling of the paint—no collision or exterior impact occurred to trigger this. The peeling area has since enlarged, exposing the underlying primer or bare metal, which is visible in an attached photo. I contacted Kia around 115,000 miles when I fully realized the paint failure. Kia declined to offer any repair or goodwill assistance, citing that the vehicle is no longer under warranty. However, this is a widely reported defect affecting many Kia and Hyundai vehicles with the Snow White Pearl paint. Numerous owners have experienced similar peeling and flaking without misuse or accidents. This is clearly a manufacturing defect in paint adhesion, rather than normal deterioration. It compromises both the vehicle’s aesthetics and resale value, and it may lead to rust or more serious long-term problems. There are pending class-action lawsuits in Canada for identical issues with SWP paint. Yet, U.S. owners are left to manage this defective condition on their own, without support from Kia. I respectfully request the NHTSA open an investigation into this paint failure issue involving Kia vehicles painted in Snow White Pearl, including the 2019 Optima, and consider issuing a recall or a mandatory repair campaign.

The contact owns a 2019 Kia Optima. The contact stated that while attempting to perform an oil change, the contact became aware that the hood latch was not operating as needed. The contact was unable to unlatch and raise the hood. The vehicle was taken to an independent mechanic and the contact was informed that the hood latch release cable had failed and needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 70,000.

The contact owns a 2019 Kia Optima. The contact stated that while driving at various speeds, an abnormal engine oil consumption was noticed. The check engine oil warning light illuminated abnormally often, shortly after an oil change had been performed. The vehicle was taken to a local dealer, where it was diagnosed with defective piston oil rings. The vehicle was not repaired due to the warranty being deemed invalid. Upon further investigation, the contact related the failure to an unknown recall; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 65,000.

Since January 2024 I have had to replace the spark plugs more than 3 times. It has also had to have an oil change done at least every two months regardless of the miles that were put in it. BURNING OIL LIKE CRAZY Mid October 2024 a full tune up was done as well as oil change and less than two weeks later it started bucking like a bronco and all oil was gone out of it. Check engine light is on and oil light goes on and off. Cannot drive at all

Forward collision Avoidance assist system - warning comes on, was told the hydraulic electrical control unit failing, this may need a recall.

My engine is burning oil at an alarming rate, my car is not recognizing low oil, so I no oil lights are appearing. I have to go to the oil change place weekly to have my oil checked. When my oil is low, I have to pay to have my oil replenished between months of my oil changes. My and my son safety was put at risk, when I found out at an oil change visit, I had less than an quart of oil I was driving around with. Which can cause engine failure while driving, overheating, and reduced performance while driving. This was confirmed by an oil change facility. I am currently in a ongoing dispute with the dealership I received my car from. The Kia dealership is refusing to do any maintenance until I can produce five years of oil change records that are not showing on car fax. To date my car oil light is not coming on, no signs are shown in my car showing this issue. I have to just get it checked weekly and pay for oil to be safe until, I can get a new engine.

PAINT CAME OFF OF THE HOOD AND TRUNK (PEARL WHITE)

Under normal operating conditions all sensors malfunctioned causing all abs systems to stop working.

I brought my Kia Optima into the dealership in October 0f 2024, because my airbag light came on. It has not been there over 6 months because my passenger airbag module is not operable and rending all my airbags useless; it is also on backorder with no ETA. The dealership wouldn't help with my escalation it has taken me 6 months to get to the escalations department and now they will not offer additional support with payments or a buy back "due to warranty". I feel helpless and like my investment has been thrown in the trash and lit on fire as my car is sitting in the parking lot in the AZ sun, not being moved and not protected from the elements. They continue to offer no real resolutions and tell me to wait for a piece that has absolutely no ETA.

The car is using oil like crazy and is not leaking anywhere out of the vehicle. Stalling out while driving and then accelerating. Has completely lost power and rolled down an onramp. Completely unsafe. Took for diagnostic and they wanted to say I needed a new gas cap. Replaced, still doing same thing. Hesitant to start even and the alternator is less than a year old.

Subject: Complaint Regarding Excessive Oil Consumption and Engine Hesitation in 2019 Kia Optima SX To Whom It May Concern, I am writing to formally lodge a complaint regarding my 2019 Kia Optima SX. Despite meticulous maintenance and care, I have been experiencing significant issues with the vehicle that are concerning, especially considering its relatively low mileage of only 107,000 miles. The primary issues are as follows: 1.Excessive Oil Consumption: My Kia Optima SX has been burning an excessive amount of oil, necessitating frequent top-offs well before the recommended oil change intervals. This is not only inconvenient but also raises serious concerns about the long-term health and reliability of the engine. 2.Engine Hesitation: The vehicle exhibits extreme hesitation during acceleration. This hesitation occurs sporadically, making it difficult to anticipate and presenting a potential safety hazard, especially when merging onto highways or attempting to overtake other vehicles. These issues are unacceptable for a vehicle with such low mileage and are not in line with the quality and reliability I expected when purchasing a Kia. Given the prevalence of similar complaints from other owners of the same model, it is evident that these are not isolated incidents but potentially indicative of broader manufacturing or design flaws. I urge the National Highway Traffic Safety Administration (NHTSA) to investigate these issues thoroughly. Owners of the 2019 Kia Optima SX should not have to endure such significant and potentially dangerous problems with their vehicles. Thank you for your attention to this matter. I look forward to your prompt action and response.

Paint peeling off for no reason. Car has zero damage, no wrecks, no issues of any kind. Paint started coming off the hood and it’s a known issue with the color of my car. Snow Pearl White. One spot is already rusting and it can lead to body damage and frame issues in the long run.

This vehicle is a lemon. It is a 2019 with 81,000 miles. How in the world does the engine start knocking when i have consistently, kept up with the maintenance on this vehicle. If i do not hear something soon im weakening legal action. Since May 18TH i have been without a car.i am a single mom and this is so difficult. Mind you it was towed July 5th from where it broke down on me.

I am writing to bring to your attention a critical safety issue with my 2019 Kia Optima SX 2.0 GDI Turbo, which has accumulated approximately 103,000 miles. This vehicle has recently developed several serious problems that I believe pose significant risks to both my safety and the safety of other road users. Firstly, my Kia Optima has been burning an excessive amount of oil. Specifically, it consumes over 5 quarts of oil within just 2,000 miles of driving. Despite thorough inspections, even from Kia Dealers there are no visible oil leaks, making this issue even more perplexing and concerning. Moreover, the vehicle has begun to shake violently while driving on the highway, which has led to a substantial loss of power in the middle of traffic. This unpredictable loss of power is extremely dangerous, especially at high speeds, as it compromises my ability to maintain control of the vehicle and poses a significant hazard to other motorists. Additionally, the car now emits a loud knocking noise, which appears to be related to the engine's internal components. This issue further exacerbates the vehicle's performance problems and raises serious questions about its reliability and safety. I urge the NHTSA to investigate these issues promptly. The problems I am experiencing are not isolated and may affect other Kia Optima owners, potentially leading to widespread safety risks. I believe it is crucial to determine if there is a manufacturing defect or other underlying cause that needs to be addressed to prevent accidents and ensure the safety of all Kia Optima drivers. Thank you for your attention to this matter. I am hopeful that the NHTSA will take immediate action to investigate these serious safety concerns and provide a resolution to protect both myself and others.

Burns through oil. I have to consistently have oil on hand. 107,000 miles and being told my year does not fall under getting a new engine falls on me to replace it. This is an issue that falls on the manufacturer. Please help

2019 Optima EX excessive oil consumption. Oil changed every 3000 miles, but is always empty within 1000miles. Car has 101,000 miles. Took to Kia dealership due to loss of power on acceleration and stalling and excessive oil consumption, they said I have multiple misfires on cylinder 1, excessive sludge buildup under cap and again no oil present. I was advised the engine needed replaced and that somehow this is a me problem and not a Kia problem. Spoke with Kia support and because it’s 1,000 miles over warranty they will not do anything even though they are aware of excessive oil consumption issue in these motors

Engine is consuming extreme amounts of oil. I have never been late for an oil change, and often go before I’m even due. My car was stalling and the RPM was fluctuating. I had to pull over and turn the car off. I then noticed my oil light on for 2 seconds, then it turned off. I’m not due for an oil change for another 2,000 miles. I pulled in to a mechanic shop (thankfully I was right next door) and low and behold, hardly any oil in my car. Had maybe half a quart left. I should have been good for another 2,000 miles. This is not the first time this has happened either. I no longer feel comfortable driving myself or my kids in this vehicle. It has been nothing but constant worry about my engine dying, burning or stalling. This car only has 70,000 miles on it and only 4 1/2 years old!!!! This is the second incident of this car jerking and stalling on the highway. Thankfully I’ve been able to pull over to avoid being slammed. I had the oil topped off so the engine could function, but once again, I was not due for a change.

The contact owns a 2019 Kia Optima. The contact stated while the vehicle was parked, there was oil leaking from underneath the hood. The vehicle was taken to an independent mechanic where the oil was changed; however, the failure recurred. The dealer was not contacted. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,008.

Was driving my vehicle when it started shaking violently and the check engine light came on. Took it to my mechanic and then it was towed to the Kia dealership. Both say that cylinder 2 won’t hold compression due to leaking valves causing oil to flood the engine and the engine to not work properly. I was told I could drive it still but that the engine could seize at any time putting us at risk for an accident. Kia says this is not covered under the extended warranty, but I have had multiple mechanics say this is an issue with 2017 and newer Kia’s and Hyundai’s,

Our 2019 Kia Optima has now stalled twice at a stop light in the past year. When it happens, we're able to restart the engine. In addition to stalling, the car struggles to start on some days and runs lumpy (minor surges in power) on other days. The symptoms match a problem Kia is aware of and for which it has provided an extended warranty (15 years/150,000 miles). Below is the wording from the extended warranty letter (2016-2020 MY Kia Optima Vehicles Low-Pressure Fuel Pump New Vehicle Limited Warranty Extension dated Sept 9, 2022): "If, at any time within the extended warranty period, you experience intermittent reduction in engine power, stalling while at idle, and/or inability or difficulty starting your engine, your authorized Kia dealership will diagnose the cause at no cost to you." When I took the car in after both incidents, the Kia dealer is not able to replicate the issue because it's an intermittent issue. There is no fault code thrown by the vehicle computer. The dealer and I have separately called Kia to get authorization to replace the low-pressure fuel pump (the most likely culprit), but Kia has denied the request because the dealer isn't able to replicate the issue. This is non-sensical given the fact that Kia in its letter admits that this problem is intermittent. I'm afraid that the next time the low-pressure fuel pump fails, it will be in a far more dangerous situation (e.g. highway) than at a stop light. I believe Kia should replace the low-pressure fuel pump for those owners who report the symptoms of a failing low-pressure fuel pump even if the failure can't be replicated at the dealer. Kia is basically saying they're not going to replace the low-pressure fuel pump until it malfunctions and stays broken which could very likely leave us stranded somewhere or worse without engine power in the middle of driving.

Clear coat paint is peeling rapidly on the driver side door. This is the only affected area and this car has never been in an accident, so it’s the original manufactured part. Car has 59K miles on it

I like kids however I purchased a Kia used in 2021, I started to notice that all consumption was going out fast before oil changes was due. I still have this ongoing problem but they say there's no recall on these GDI motors however other people I see informs or experiencing the same issues. I now have to try to get an appointment with Kia for an oil change before it's time for the oil change and to do a oil consumption test and then hopefully the main factors or kia will replace this motor even though there's no warranty on the car. I might also have a issue with the front collision feature because I have been noticing in the past few weeks that this feature comes on even when there's no car in front of me it will start to break however it says that my car is not a part of a software upgrade so I got to ask them about that as well. There is definitely a issue with the GDI motors and Kia really needs to recall them all and replace the motors it should not burn all the way that it does I've never had any car of any brand or manufacturer burn oil the way that this car is burning oil. I cannot financially afford to go out here and trade this car in and get another car with the type of payment that I have for this car since I had my bank finances car.

Original owner, received in mail that this vehicle was recalled for engine issues. Provided a lifetime warranty for engine. Noticed my vehicle began consuming oil more than normal. I constantly have to put oil in the car 2-3/ week. The shops say it doesn’t need an oil change the oil is burning fast. Never notice any leaks bit my vehicle began to not pick up speed and shop said the oil is burning and possible engine is getting ready to go. Called dealership and they said they won’t replace u less the engine is totally blown and I need to have all type documents showing I’ve been doing maintenance although this is a known issue. Constant oil changes.

Engine is consuming too much oil engine is shaking and knocking engine light is on reducing speed will cut off in mid drive

No oil burning oil

I was doing 65 on the hwy when Forward collision started so sound off and slowing down car when there was no other car around me this happened on several occasions

My 2019 KIA optima with 116,021 odometer on mileage. Stop in the middle of High Volume Traffic , Because of Software Issues , I suspect . All Forward Collision Warning Detection , Also Rear Collision Warning Alerted on dashboard!!! Which Causes my Car to stop in the middle of Traffic Completely shut down. I was able to get my vehicle towed to KIA West Dealership Located in lithia Springs GA . I requested a diagnostic test and was informed by my service advisor and service manager that my vehicle has a burned out wire located in the left right rear sensors radar assembly, bumper area . Which will eventually have caused a fire or actually already did, I asked how did it happen? I was told it just simply burnt out. !!!! I was told the assembly box junction box needed to be replaced, which I agreed at that moment in order to diagnose the vehicle. Second the electrical problem was revealed, which is the big problem now currently for 1 , the vehicle is not safe for a midsize sedan on public roads and highways the if this make and model car causes random fires. secondly the parts very expensive and suspicious. I’m currently still doing my investigation. Unfortunately I had to agree for the sensors to be replaced and fixed because personal reasons I need my vehicle to get back-and-forth to work, etc.. I’ve been in contact consumer regional services, No one is able to find a recall with my Vin number the car never been in a accident ever. I have a picture of the hazardous burned out wire the technician showed me as well. As they claimed randomly caught fire.

Oil consumption

Vehicle safety immobilizer is not present as a result vehicle cannot be insured in the state of ct

Paint is peeling and chipping on the hood of the vehicle and also the trunk paint is bubbling. It is getting worse as time goes on.

My car is burning oil when i drive & my oil is not lasting in my car , i have to get a oil change done every 2 weeks im not sure what’s going on and im being told that there is no recall on my engine but i have others telling me that the GDI engines have recalls on them

The car has been getting progressively rougher while driving and jerking when trying to accelerate. I checked the oil and it was nearly empty. There has been no sign of an oil leak even though I park in the same spot every single day.

My car was having to get the spark plugs once a month loosing oil. Lots of Oil is coming out through the exhaust my grandfather just saw it. I still owe 20,00 on this car. I was told by Kia I’m going to need a new engine. I stopped driving it

I am having to change the plugs in this car monthly. The car goes into limp mode and will not go over 15 miles an hour. There is oil getting in the plugs and causing them to burn. This car uses a lot of oil. Lots of oil!! these issues started at 100,011 miles. I have also noticed that this car has started accelerating on its own.

Dear National Highway Traffic Safety Administration, I am writing to file a formal complaint regarding numerous premature defects in my 2019 Kia Optima, which have led to serious safety hazards and compromised driving conditions. Firstly, the premature valve cover gasket leaking has resulted in dangerous fumes infiltrating the cabin, posing a significant risk to my health and safety as well as that of any passengers. This issue has not only caused discomfort but also raised concerns about potential long-term health effects. Additionally, the premature turbo gasket leaking is a further cause for alarm. Not only does this compromise the vehicle's performance and efficiency, but it also presents a potential fire hazard, particularly if the leaking oil comes into contact with hot engine components. Furthermore, the premature defect of the axle shafts and axle boots is a critical safety issue. This compromises the vehicle's stability and handling, increasing the risk of accidents and potential loss of control while driving. Moreover, the premature engine knocking and abnormal shaking and lag are indicative of underlying mechanical issues that significantly impact the vehicle's drivability and safety. Engine knocking can be a precursor to more severe internal damage, while abnormal shaking and lag compromise the vehicle's responsiveness, especially in critical situations such as merging onto highways or overtaking. These issues collectively present a clear pattern of premature defects that pose significant safety risks to both myself and other road users. As such, I urge you to investigate these matters thoroughly and take appropriate action to ensure the safety and well-being of Kia Optima owners. I look forward to your prompt attention to this matter and a swift resolution to address these critical safety concerns.

Engine burners oil at about 1qt per 1000 miles. There is no leak, and no repair to stop the oil from burning quickly. I have to refill my engine with oil several times in between oil changes. Paint is peeling in various spots on my hood and bumper. I first noticed a small area along the border of the hood nearest the windshield (mostly visible from the driers seat). Then 3 more spots on the opposite side of the hood and eventually all over the bumper.

The second month after I purchased this vehicle the master warning light and forward collision light popped up and car vehicle started de-accelerating in the middle of the freeway and I had to pull over and then the car died. Repeatedly took my vehicle to the Kia dealership and no one still has been able to help me. They claim no one at their corp. Office in California what that means so it has been going off ever since and I don't want my vehicle to died again. PLEASE HELP!!!

Vehicle engine light on and oil burns out fast, car jerks and delay on starting

I currently have 119500 miles on my 2019 Kia Optima. I am losing oil somewhere between oil changes, and the car is beginning to hesitate while driving. I don't see oil on the ground but I have had to put in 2-3 1/2 quarts of oil way too often. For this to happen on some many vehicles, it must be a manufacturer defect. The hesitation just started and I'm taking it do get a diagnostic test. 11

Since I have had the vehicle I have had to have multiple Spark Plugs and Engine Coils replaced, literally every 4-6 months. One diagnosis said there was a problem with the motor, when I told Kia, they did not come back with the same diagnosis, well they sort of did, but did not noter it as an issue. Also, my car burns oil way too fast. I'm having to put in 2-23 quarts every 2-3 weeks. I have been told that the GDI motors are the culprit for this. Have even heard Hyundai had a enough complaints and has recalled the motor, but Kia did not, so we are still running around here paying excessive amounts on oil and repairs.

System failed to pick up speed.

The morning of 9/26/2023 as I was driving on the freeway road and I experienced an intermittent reduction in engine power and had to pull over on the side of the freeway road. This was a very traumatizing experience and I was very lucky that I was not hit while awaiting to be towed. After my mechanic inspected my vehicle we received error code P1233 and advised me to call the dealership as this is something covered under an extended warranty. I scheduled an appointment for 9/27/2023 however, I dropped my car off on 9/26/2023 since I was able to arrange dropping it off a day earlier. I received a call very early on 9/27/2023 from Chuck, one of the mechanics at Westside Kia and he stated that my car was working perfectly fine. After I informed him of the issue I had he stated they would need to keep my car for about 48 hours until they could determine the issue. I received a call from Chuck on 9/28/2023 and he stated that the issue with my car was not covered under the extended warranty and that I would have to pay $1,200.00 to get the issue fixed. He agreed that the issue was in relation to the low pressure fuel pump and should be fixed at no cost however, he stated the only way this could be fixed is if they received approval from Kia Consumer Affairs. On 9/27/2023 I opened case number [XXX] and after a month they denied my case stating that they will not fix my car free of charge because the fuel pump needs to be replaced and the recall only takes care of replacing the filter and not the pump itself. I have argued with the dealership and Kia Consumer Affairs that if the fuel pump goes bad due to a bad filter that has been recalled then it is their responsibility to cover the cost. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On March 2022 Forward Collision Warning System, Blind Spot Warning System, ABS braking System and other systems associated with a bad passenger rear wheel sensor not working. On March 17, 2022 rear passenger wheel sensor repaired under warranty by local Kia Dealer. In September 2023 same issue with the above warning systems occurs with only another 2,000 miles on car after previous repair. Local Kia dealer states both rear wheel sensors need to be replaced. Kia dealer states vehicle is no longer under warranty and will cost in excess of $800 to repair. After checking similar complaints online, I believe there is an inherit defect with this type of vehicle's wheel sensors and a recall is needed to enforce Kia to stand by their product and ensure the safety of the vehicle and their customers.

Dear National Highway Transportation Safety Administration, I am writing to bring to your attention a grave safety concern regarding my 2019 Kia Optima SX. Despite diligent maintenance and care, my vehicle has experienced persistent alignment issues, particularly on the right side. Additionally, I have encountered premature axle shaft and axle boot failures, all of which have occurred well before reaching 60,000 miles. These issues have not only posed a significant financial burden but have also jeopardized the safety of myself and other road users. The repeated alignment problems have resulted in the rapid deterioration of tires, leading to baldness within a month of replacement, creating a hazardous driving condition and increasing the risk of accidents. The premature failure of axle shafts and boots is unacceptable for a vehicle of this age and mileage. Such failures not only compromise the vehicle’s performance but also raise serious concerns about the overall quality and safety standards of the Kia Optima SX. I urge the National Highway Transportation Safety Administration to conduct a thorough investigation into these recurring issues affecting the 2019 Kia Optima SX model. Immediate action is necessary to ensure the safety of consumers and to hold Kia accountable for any design or manufacturing defects contributing to these alarming problems. Your swift attention to this matter is crucial in preventing potential accidents and ensuring the well-being of motorists nationwide.

Dear National Highway Transportation Safety Administration, I am writing to express my extreme dissatisfaction and concern regarding the Goodyear Assurance Weather Ready tires, size 235/45R18, installed on my 2019 Kia Optima SX. These tires have proven to be defective, failing to meet the standards of safety and durability promised by Goodyear. I would like Goodyear to refund for the defective tires! Despite being well within the mileage limit of the 60,000-mile warranty, Goodyear has refused to stand by their product. Instead, they have absurdly attempted to shift the blame onto me, suggesting that frequent alignments are necessary at every oil change. This is not only an inconvenience but also an unjustifiable expense for a supposedly high-quality product.I have diligently maintained my vehicle and have documentation to support the fact that the tires are defective. However, Goodyear has shown a complete disregard for customer satisfaction and safety by failing to address this issue adequately. I urge the National Highway Transportation Safety Administration to investigate this matter promptly and take appropriate action against Goodyear for their negligence and failure to uphold their warranty obligations. Plus to have the tires taken off the market as they put myself and my families lives at risk. Consumers deserve better than to be burdened with faulty products and dismissive customer service.

Smart choice auto financial in Indiana sold me a vehicle with a defaulted engine. Purchased car 9/20/2022 I have been consistently changing an add oil, to up keep the vehicle til I receive help . Vehicle have been attempted to be fix 6times, 3 by dealership I purchased from, an three different kia dealership. Not yet acknowledged the so call life time warranty, I was told engine had to go out . At this point 9/14/ 2023 the engining knocking, smoking, engine light on. So I took it to another kia dealership am it's there as we speak. Waiting I fro

The engine is malfunctioning,! and is available for inspection. Within one month of owning(leasing) the vehicle, While driving on the highway, the engine light started flashing, and the car immediately decelerated. Gas pedal was to the floor, and couldn’t get over 40mph. Safely got it to my mechanic who put it on the computer, and read knock sensor. The car was 2 quarts short, and we had 800 miles to go until next oil change was due. The vehicle is BURNING oil. Not one zero leak! We are subjected to continually checking and replenishing the oil to prevent the engine to go back into safe mode. I have 3 small children. Car still under warranty, dealership can’t get car in for months and no shop can get their hands on a motor. Please help!!!

It’s a 2019 KIA optima the color is snow pearl white and it is peeling off. the car only has 31262 miles on it it’s peeling on top at the windshield

Just had oil changed on June 30th, 2023. However, for the second time now after about 1.5 month after the oil change the oil light is flashing on and off at either takeoff or breaking. Checked oil stick and it say it’s full then check again it’s spotty as if there’s no oil in the engine. Took cap off engine and it was smoking and smelling burnt. Oil on the stick was definitely darker than normal as well. What is the cause of this?