Skip the auto shop - Our mechanics make house calls

Q: Spark plug replacement

asked by on

I was wondering what size wrench do I need for the spark plugs on my engine and what are some clear signs that show wires need to be changed? Because my wires look almost immaculate but idk if they're moving power like they're supposed to.

My car has 222800 miles.
My car has an automatic transmission.

The socket size is 5/8 for the spark plug replacement. The spark plug wires should be inspected for dry cracks in the outer cover and also look for small white or black spots on the exterior of the wire indicating they are leaking high voltage and replace the plug wires if any problems are found. Since you have high mileage the plugs and wires should be replaced as a set. A mechanic like one from YourMechanic can come and perform the work for you.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Why does my power steering only work when it wants to?

First off, I would not drive the vehicle until the problem is rectified, as this is a very unsafe driving condition. I would have a certified mechanic take a look at the vehicle to diagnose the issue. With that said,...

Q: Spark plug wires get heated and check light comes on

If your ignition spark plug cables are burning through then it is caused by not being in contact with the spark plugs and the spark plugs have high resistance. Replace the spark plugs and spark plug wires.

Q: A/C compressor

Check the condition of the drive belt. If the belt looks cracked or worn, it may be slipping and making a squealing noise. Consider hiring one of our mobile experts to come out and offer a personal diagnosis of the...

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.