Thread: engine noise
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Old 09-22-2007, 03:47 PM
NoRiceHere01 NoRiceHere01 is offline
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engine noise

Can anyone tell me if they have had the same stuck lifter noise in their truck or not? its an 01 4.8. i have the usual piston slap noise at startup, but while its running theres still a tapping.its not a bottom end noise, like a bearing, its definitely up top.a friend has 2 LS1 trans am's, and has the same noise in one.i have heard that these noises are common on LS type engines, but ive also heard that oil additives are a no-no with them.is there an additive thats safe in this engine that can quiet it? because im not gonna to just put STP in it if these engines shouldnt have oil additives. any help would be great
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