Q: Hi i have a 2001 kia rio with about 130xxx give or take a few as im gping down the road sometimes it misses then goes down rd smoo

asked by on

When I first start the car there is white smoke and water coming out the exhaust which I believe is condensation every so often driving down the road it has a misfire or Miss so I change spark plugs seems to be running fine but does it every so often still when I went to pull my plugs I pull one plug wire and it was covered with oil which I think came from somebody spilling when they were filling the oil but when I pulled my spark plug I had oil on the bottom of it I don't know if it came from the side wall because I bumped it as I was pulling it out or if it was from the motor other than the misfire the car runs awesome my check engine light came on couple weeks ago went and got that check said it was a bad thermostat so I change that and it said I had a small vacuum leak maybe like the gas cap I checked the car while it was running use starting fluid spray spread it around hoses check to see for a vacuum leak couldn't find one

My car has 130000 miles.
My car has a manual transmission.

Hello - the oil on the plugs and plug wires is probably from a leaking valve cover. Oil on the spark plug boot (end of the plug wire) or the outside of the plug can cause a misfire - the oil allows the spark to short to the cylinder head instead of creating a spark inside the engine. You don’t mention losing coolant after the bad thermostat, but if are losing coolant, the thermostat event may have caused enough overheating to cause a blown headgasket. This could also cause a misfire. I would recommend a valve cover gasket replacement to repair the known leak, by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, and repair this problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Hi i have a 2001 kia rio with about 130xxx give or take a few as im gping down the road sometimes it misses then goes down rd smoo

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Fuel gauge issue and weak battery

The fuel gauge issue is a relatively simple concept, but a bit involved in terms of the work to fix it. Your fuel tank has a small float device sending unit inside it that monitors the fuel level inside the...

Q: Wheels squeaking

Hi, it sounds like a bad hub is making the squeak noise you hear. To repair this, jack the vehicle on jack stands. Spin the wheel while lifted in the air and see if you hear the noise. If so you...

Q: cooling fan wont spin

Hi there. Radiator cooling fan operation is not designed, to continuously run. It is designed to turn on at a specific temperature, generally around 220 degrees. A quick check to see if the cooling fan is capable, would be to...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...