bad lifter?
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Joined: Mar 2014
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bad lifter? So this past weekend I went down to Virginia International Raceway for a 3 day DE event. One the first day, the second session, I was on track and had constant backfiring like a machine gun. Came in, and while idling heard a loud knock/ticking. My guess is a bad lifter. I have the ls3 motor and I was curious if this was a common problem on this car? Or any insight to what this problem could be because im not very knowledgeable on engines, could be something else? When i get it fixed im thinking of going with"race" replacements, but im not sure what brand, etc, that are good.
you need to get that checked out. comp test, check lifters, check plugs...etc
the ls3 and ls7 use same lifter which is pretty robust as long as it didn't starve for oil. I will step aside for more knowledgeble peeps to chime in.
the ls3 and ls7 use same lifter which is pretty robust as long as it didn't starve for oil. I will step aside for more knowledgeble peeps to chime in.
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Joined: Feb 2010
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From: Jax
I've heard of lifters going bad on L99's but not on LS3's, my L99 lifters failed when I pushed my rpm's to 6,800 (while slipping the transmission), same clicking noise you described.....do you have a way to read the dtc code? Where are you? Maybe a shop close to you can check it out....
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Joined: Dec 2011
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From: SoCal
So what's the verdict? Been a week and no update. Definitely interested to hear what you find. I'd be surprised if it was oil starvation. Have not seen this yet on any of my track days and I have ran with some very aggressive Camaros. Mine never had an oil issue either running quite aggressively though not on slicks I have seen 1.1 Gs on some of my runs. Keep us up on the issue.
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