This is a discussion on Engine knock within the Internal Engine forums, part of the LSx Technical Help Section category; I have an '02 with 13k miles and I seem to have this classic "lifter knock" coming from the engine. ...
08-27-2007, 01:41 PM #1
I have an '02 with 13k miles and I seem to have this classic "lifter knock" coming from the engine. The noise is there when the engine is cold and warm. I noticed this article here http://www.rjsmith.com/gm-1206539.html#top and it says a problem about an oil pump o-ring being bad. I searched on here and only found a couple threads about this issue but no real answers. How many people have this from the factory? Changing it doesn't seem like a bad job but I want to make sure it's not really a bad lifter. But I can't seem how it can be. Thanks.
08-27-2007, 02:20 PM #2
08-27-2007, 04:29 PM #3
- Join Date
- Jan 2006
- The great red state of MD.
- 2001 Trans Am (sold)
Not sure what you mean by knock. I believe the o ring thing is supposed to cause a ticking sound.
08-27-2007, 09:17 PM #4
Ticking, knocking...whatever. It's a sound like that. Is piston slap a myth on these engines?
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