Q: My brother-in-law is fixing the car. First time yes it's been going on about two weeks finally the check engine light came on yesterday.

asked by on March 16, 2017

My car was being very jerky when I pressed on the gas or just driving down the road at Any different speeds. My brother-in-law replace the ignition coils and spark plugs today. When I was driving home it was still being jerky when I pressed on the gas and drive down the road. He said the plugs were covered in oil like sitting in puddles. He also said he noticed oil dripping in his driveway and he noticed more exhaust smoke than normal. What do I do

My car has 163000 miles.
My car has an automatic transmission.

If the spark plugs are becoming coated with engine oil and there is excessive oil in the exhaust system, then there could be three symptoms to check.

Symptoms

  • PCV Valve could be plugged making the engine over pressurize and forcing engine oil into the combustion chamber
  • The Piston rings could be worn causing the engine oil to puddle up onto the piston head as the engine is running
  • The Intake valve could have a valve guide that is worn and the valve guide seals could be damaged causing oil to be sucked into the engine

I recommend replacing the PCV valve first and if the symptoms return, then the engine needs to be check for the internal leak.

If you need further assistance with your exhaust system smoking with oil coming out, then seek out a professional, such as one from Your Mechanic, to help you.

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

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

Engine light...

when your check engine light comes on, it is because your car's controller has detected a malfunction and stored a corresponding trouble code. The technician can read the codes with a scan tool, and take the appropriate action. He then...

Brakes hard to press

It sounds like your brake booster is worn out. There is a diaphragm inside the booster that wears out and will not allow the booster to get enough vacuum to work properly. I would have a technician from YourMechanic come...

My car changes gears while driving

It sounds like the transmission has delayed engagement. After the engine is started, how long do you wait until you put it in gear? As cars get older and racks up more miles, it never hurts to let the car...

Related articles

P0744 OBD-II Trouble Code: Torque Converter Clutch Circuit Intermittent
P0744 code means there is an abnormality in the torque converter clutch circuit often due to transmission failure or internal blockages.
P3468 OBD-11 Trouble Code: Cylinder 9 Deactivation/Intake Valve Control Circuit High
What What the P3468 code means This code indicates that there is a problem with the intake valve on cylinder number 9. When your vehicle’s powertrain control module (PCM) notices that the measured values of the mass airflow sensor, the...
How to Read a Motor Oil Label
Read an oil label to know the right type of oil to use in your car. Some new engines require synthetic oil, while older engines use conventional oil.