Skip the auto shop - Our mechanics make house calls

Q: Frozen spark plug

asked by on

I need spark plugs changed out and I had diagnostics done the number 3 plug is bad and possibly frozen or stuck I would like to inquire if the mechanic would be able to handle that if one came out?
My car has an automatic transmission.

Yes, seized plugs can be removed and there are specific techniques that mechanics rely on. Upon removal, though, there is always the possibility that threads could be damaged in which case the spark plug hole would be chased (cleaned up) with a special tap. In extreme cases, particularly where untrained individuals have attempted removal, new threads will have to be placed using a thread insert such as a helicoil. To minimize the risk, typically a mechanic will blow all debris out of the recess in which the plug sits and apply a liberal amount of penetrating oil. Let that sit overnight and then rock the plug back and forth, indeed at first possibly tightening it just a little bit. If you VERY slowly (just tiny partial turns) alternately loosen and tighten the plug, the penetrating oil works its way in and the plug will then come out easily. But, you have to work slowly and the turns, back and forth, have to be tiny. Conversely, if you attempt to remove the plug entirely, at one time, ONLY by loosening it counterclockwise, you are practically guaranteed to ruin the threads. So, back and forth, just a little bit at a time, lots of penetrating oil and you will have no difficulty. To schedule removal, please simply request spark plug replacement and a certified professional will be dispatched to accomplish this repair for you promptly.

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
  1. Home
  2. Questions
  3. Frozen spark plug

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: Takes 3-7 tries before engine stays running

Hello. The symptoms you are experiencing, hard starting and an unstable idle speed, can be caused by a variety of issues. You mention that you replaced a few parts, namely ignition components, so they should be alright. The next things...

Q: Upon hitting a curb, a piece of aluminum with foam on it ( about the size of my hand ) ripped off of my 14 focus. what is it?

If you hit a curb hard enough to cause a splash or heat shield (or bumper fascia component, if it is that) to dislodge, I would be more worried about damage to the tire, rim, and possibly the suspension, particularly...

Q: Engine noise when I press gas pedal

You most likely have a warped exhaust manifold that has caused one of the studs holding the manifold to the cylinder head to break. When this happens you will get a loud exhaust leak that can be quite annoying. I...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.