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Discussion Starter · #1 ·
Hello all new here i had a serious issue with my 2013 Cruze. My coil pack blew out had three sparks and one spark plug damaged. Can the spark plug thread that was damaged be re threaded? Three of the new sparks tighten in but one doesn't.
 

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Discussion Starter · #5 ·
Yes it did the others are good but one thread. I never experience anything like that every went nuts i owned lot of cars and never had that type of problem.
 

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I think a replacement head would be covered under power train.
 

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Helicoil is not the best repair for spark plug holes. Timesert is the best repair. Blown out plugs are fairly common common on 5.4 F150's from about 15 years ago. Those trucks only had about 3 threads in the heads
 

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Discussion Starter · #17 ·
I never seen spark plugs come lose on there own i though the coil pack would still hold them in place even if they came lose. If i get another blow out ill claim lemon law the car is turning into a lemon to me and i take care of it still has low miles too.
 

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The threads hold them in place. You've got probably 170 PSI on the other side of that plug - if it's loose or misthreaded into the soft aluminum head, the coil pack isn't going to do a thing to hold it in.
 
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