Skip the auto shop - Our mechanics make house calls

Q: My car started losing power, shut off, and will not restart. My number 7 spark plug also has oil in it.

asked by on

My corn started losing power going uphill I was about to make a turn with the brake the car shut down and will not restore my number 7 plug has oil in it

My car has 143267 miles.
My car has an automatic transmission.

Oil in a spark plug hole will generally cause a misfire to occur. This can happen when the spark plug tube seals get oil in them from not sealing correctly. This will often cause misfires resulting in the Check Engine Light also coming on. The misfire, when persistent enough, can cause a lack of power which may cause the car to stall as well. As you may know, however, a misfire can happen for many other reasons as well, such as poor fuel pressure, dirty or leaking injectors, a faulty O2 sensor, and many other things. The Check Engine Light should indicate one or more codes which will point to potential problems.

I would recommend having a professional mechanic, such as one from YourMechanic, come to your location to determine why your car is losing power and stalling and suggest any needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • My car started losing power, shut off, and will not restart. My number 7 spark plug also has oil in it.

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: Finding a (at least decent) sporty convertible for $2-5k

Maintenance costs could vary greatly between each make and model. Make sure to also include extra costs when purchasing a sport convertible. Maintenance repairs on convertible tops tend to be expensive so that is something that you'll also need to...

Q: Enabling the park aid

The park assist feature on your vehicle is actuated by putting the gear shift into reverse. It is comprised of a speaker, the sensors, and the park assist module. The module will call for an alert sound when there is...

Q: Surging

Hi There, Its sounds like you may have an issue with the refrigerant being overfilled or potentially have a bad AC compressor switch, which is what controls the AC compressor and when it cycles on and off. Any time the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.