Q: Spark plug stuck right in the head, how bad is it?

asked by on

I was replacing the spark plugs in my 2007 Ford Explorer when one broke off right there in the cylinder head! I'm glad that I was able to get 136,000 miles out of my truck before having a problem, but am disappointed that this made it through all the checks and inspections at the factory. I am worried that the cylinder head could get damaged removing one of these plugs. What can be done?

A: The spark plugs in your engine have an exte...

The spark plugs in your engine have an extended shield on the tip of each plug. This shield will get a carbon ring build-up over time and if you try to remove the plug, the carbon will bind the treads and possibly break off the lower part of plug in the hole. To remove plugs, you have to loosen each plug about 1/8 turn, then put carbon cleaner in each plug hole and let it sit for a couple of hours to soften the carbon on the plug tip. Then, by hand using constant turning, take out each plug. If one or more break off, you will need the special plug end removal tool, Rotunda 303-1203 or equal, to remove the broken off piece. If the tool cannot remove it, then the head would have to be removed to extract the piece.

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: Emission issue causing car to run poorly.

Hello. If the engine in your car is not running properly then that will typically cause it to fail an emissions test. If the check engine light is on then you should have the computer scanned for codes to see...

Q: Car will not start, no spark - 1994 Ford E-350 Econoline Club Wagon

Besides checking the engine and fuel injection fuses and relays, it is possible the oil pressure cutoff switch may be malfunctioning since the vehicle sat up so long without oil pressure. If the engine oil pump isn't priming, there might...

Q: Trans fuid type for A4LD

Mercon and Dexron III are the exact same fluid, they just have different names. Mercon V supersedes the Mercon spec and would also be suitable to use in your vehicle.

Related articles

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.
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.