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rpmdiag, Tech and Instructor
Category: Mazda
Satisfied Customers: 8144
Experience:  Since 1975
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It is misfiring and the plugs have been replaced, 117,000

Customer Question

It is misfiring and the plugs have been replaced
JA: How many miles are on the car? Is it a steady misfire? Or random?
Customer: 117,000 steady
JA: What is the model/year of your Mazda?
Customer: 2007 cx-7
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes....all of 5 he spark plug a were replaced yesterday and an ignition coil
JA: Anything else you think the mechanic should know?
Customer: There is a hole in my exhauast
Submitted: 1 year ago.
Category: Mazda
Expert:  rpmdiag replied 1 year ago.

Hi, welcome to Just Answer. I’m Ron and I’ll be helping you
Before we get started though, Please understand that I don't know
your skill level or tools you have to assist us. Also understand that
I can't see, smell, hear, or touch the vehicle either, so patience is
appreciated. JA is a great Q/A site, but it does NOT replace a
repair shop.
My goal is to make you happy and get a great rating in return for
my time. Sometimes I have to give you bad news that I know you
didn’t want to hear, so please don’t shoot the messenger.

Okay, we also need to check and see if the injectors are good and firing too. If they are good, check engine compression.

Thanks, Ron