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1 cylinder Spark Plugs crack and misfire. Random at first…

1 cylinder Spark Plugs...

1 cylinder Spark Plugs crack and misfire

Mechanic's Assistant: How many miles are on the car? Is it a steady misfire? Or random?

Random at first 79000 mjiles

Mechanic's Assistant: What is the model/year of your Chevy?

2012 1500

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Yes new plugs and wires

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

First plug failed at 65000 next a79000

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Answered in 2 minutes by:
8/22/2017
Pete
Pete, Auto Service Technician
Category: Chevy
Satisfied Customers: 32,572
Experience: 14 years GM dealer Technician.
Verified

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

What liter engine is in your model?

Let me know so we can continue,thanks Pete

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Customer reply replied 10 months ago
5.3
If you have replaced the spark plug and wire with the correct wire and plug and it continues to crack and fail this can be caused by the coil that fires that spark plug.It may be putting out to much voltage/spark causing this fault.I would replace the coil and make sure you are using the correct plug and wire.Since all other plugs are ok this doesn't sound to be a grounding issue and if there is no engine knock noises this doesn't sound to be a mechanical fault.I suspect the cool is the cause.Let me know if you need anything else here.If you feel satisfied with my help feel free to leave a rating as this is how I am credited for me time. A 5 star rating is appreciated.You can still come back here as much as needed.
Pete
Pete, Auto Service Technician
Category: Chevy
Satisfied Customers: 32,572
Experience: 14 years GM dealer Technician.
Verified
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