2001 Lx470 engine knocking or popping sound?

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Joined
Feb 22, 2020
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5
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Location
Cleveland TN
Odd noise that just started today. Pulled a code a got P0306 misfire on cylinder 6. I had an extra coil and changed it but no improvement. the speed of the noise increases when under load/ pressing gas. going to attach link for a youtube video. Thanks in advance for any advice or opinions.
 
did you check the spark plug? and the hole it screws into?
 
Forehead smack, no, I just swapped the coil. Plugs were changed with oem bout 30 k miles ago when I had timing belt done. Will check tomorrow. The lx is my wife’s daily driver and I just did a quick swap with a new coil in hopes that would remedy the issue. Had to clean out my work truck for her to drive while the lx is down.
 
Sounds like a spark making a jump inside the tube. Probably a cracked spark plug. emove plugs when the engine is cold.
 
Sounds like a spark making a jump inside the tube. Probably a cracked spark plug. emove plugs when the engine is cold.
Or the plug threads in the head blew out…
 
pulled the spark plug this morning, plug threads in the head blew out and threads on the plug were pretty damaged as well. thanks for the advice and responses.
 

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