Q: Spark plug popping out

asked by on

My spark plug keeps popping out.

Hello. This is a common problem on the Ford modular V8. The new spark plug won’t stay because the threads are stripped out. There are two repairs: 1) drilling, and installing a threaded insert into the head for the spark plug, or 2) removing the head and having the same procedure done at a machine shop. This is usually done if the first one fails. You will probably need to take it to a shop that has performed this repair before, since they will have the special tools needed to perform the on-car repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Spark plug popping out

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: I have a 2001 Pontiac grand am. A week ago I got an oil change as usual. Yesterday the change oil light came on. Is this bad?

Hello there. Usually when the oil change warning light is illuminated on the dash after an oil change, it's just a simple glitch in the ECU and not an indication of a major problem. However, there are some instances where...

Q: Ignition Coil

Hi There, What you are describing sounds like an ignition coil pack that may be failing. Ignition coils are prone to this type of erratic functioning or heat cycling when they are beginning to fail due to the temperature fluctuations...

Q: Not Starting power disconnecting

Hello. Thanks for writing in about your 1990 Ford Probe. I would start by checking the connection at the battery and at the negative battery cable. If those are fine, then I would do a load test on the alternator....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.