P-0305 Misfire on cylinder 5

Hello all! Hope everyone is doing good.

Leaving my neighborhood the car started running like garbage and threw a check engine so I limped her home and checked the code. Seems like the starting point for the P-0305 is ignition coils and new spark plugs.

My question. Should I just replace all coils at once, or just the one? NGK seems to be the replacement that everyone likes.
Anything else I should know/check?

Thanks
Matt

Quote:

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Originally Posted by Glitch

Hello all! Hope everyone is doing good.

Leaving my neighborhood the car started running like garbage and threw a check engine so I limped her home and checked the code. Seems like the starting point for the P-0305 is ignition coils and new spark plugs.

My question. Should I just replace all coils at once, or just the one? NGK seems to be the replacement that everyone likes.
Anything else I should know/check?

Thanks
Matt

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Move the coil from Cyl 5 to cyl6 and move the spark plug from cyl 5 to cyl 4 and see if mis-fire moves with either.

Looks like it was the ignition coil. Went out and replaced it after diagnosing. Misfire is gone Thank the lord.