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My Chrysler 300 is throwing a p0303 code misfire in

Customer Question
My Chrysler 300 is...

My Chrysler 300 is throwing a p0303 code misfire in cylinder3. Would this cause a ticking at idle and a small knock when given gas.

Mechanic's Assistant: Have you seen the misfire code before? Has the car been stalling?

It stalled once

Mechanic's Assistant: What year is your 300?

2007

Mechanic's Assistant: Are you fixing your 300 yourself? What have you tried so far?

Yes I am. I put some Lucas oil treatment in it.

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

There are no metal shavings in my oil or oil pan.

Submitted: 8 months ago.Category: Chrysler
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Answered in 1 minute by:
9/14/2017
Chrysler Mechanic: Mike V.v, Technician replied 8 months ago
Mike V.v
Mike V.v, Technician
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Satisfied Customers: 27,070
Experience: 25 years automotive experience all makes and models, Subaru and Nissan factory trained.
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Chrysler Mechanic: Mike V.v, Technician replied 8 months ago

Sometimes a bad ignition coil can cause a tapping or snapping type of noise. If the spark is arcing from the coil to the engine it will make almost like a tapping sound.

As for a knocking, not usually, however, if it's misfiring that means the fuel isn't burning, so it might make some odd noises. I would do a compression check on cylinder 3 if swapping the coil with one of the others does not change the location of the misfire.

Please let me know if there is anything else I can do to help.
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