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Discussion Starter · #1 ·
Whole pcv system went, dealer replaced intake manifold and cam cover. Now I'm getting a random miss going up a hill doesn't happen every time and I'm not getting a cel. 4th or 5th gear around 45mph between 3-4k rpm. It starts bucking hard. Like I said it's not Everytime I can't replicate it and its simply random it will buck and feel normal for a sec and buck about 4 times total and it's back to normal again. I was on cruise control and just let it buck today in hopes of a cel but nothing. 2016 limited 1.4. Any idea what this could be?
Changed plugs for ngk coppers about 2k miles ago gapped at/around .28 if that means anything. TIA

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Discussion Starter · #3 ·
I would pull the coil pack and check that the boots are fine, not cracked or kinked considering the recent plug change. I would also check to make sure the springs inside the boots are making contact with the top of the plugs.
I was going to pull the coil and take a look but keep in mind, the dealership was just in there changing the cam cover (as they call it) so I geuss they could have just not installed the coil correct (I'd hope they did and would've told me if it had anything you described but who knows) . But I did plug change 2k ago Chevy was in there like 100 miles ago lol. Been a random issue since and they tell me no CEL, no "proof" then it's not an issue.

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