Skip the auto shop - Our mechanics make house calls

Q: Car is misfiring, oil in ignition coil & spark plug

asked by on

My car started misfiring after accelerating quickly on the freeway the other day. The ignition coils tend to go out so I immediately bought a new one and intended to replace it. However, when I pulled out the old one, it was covered in oil. In fact 2 of them were. Of course the spark plugs were covered too. The most common cause I saw was that it could be the valve cover gasket, so I made an appt to get that replaced tomorrow and intend to replace the plugs and coil myself after that. However, I have two questions: 1 - do I need to do anything in particular other than soak up the oil that was in there and 2 - is there any other obvious damage that driving on this would cause or other parts I should replace as a result?

My car has 136000 miles.
My car has an automatic transmission.

A: Soak up the oil in the hole and clean it ou...

Soak up the oil in the hole and clean it out with brake cleaner. Then dry it before replacing the spark plugs and ignition coils. You should replace all 4 coils as a set with new plug wire boots and plugs. Be sure to do all of this after the valve cover gasket and spark plug hole seals are replaced.

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Wondering if repairs are likely in the near future

Hi there. Most cars are reliable under 100,000 miles. Among the range of cars on the market, Audi is about mid pack in regards to reliability at best. Most Audi's are VW's. In the case of your TT, the 2.0l...

Q: Skipping, light rough idle, & smoking

Hi and thanks for contacting YourMechanic. Depending on what color the smoke is will determine what is happening with the engine. If there is heavy black smoke, then there is too much fuel in the cylinders and the fuel is...

Q: My oil pressure light comes on when driving

The Check Engine Light may have come on for another reason and may not be related. You should have it scanned and diagnosed. As for the Oil Pressure Light, you may have a blockage in the oil pump screen and...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...