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Anonymous Posted on Jan 06, 2011
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I have a 2000 astro LS it has never given me problems till now.when i start it there is a ticking or knocking.sometimes it does it and sometimes it wont.i have checked the oil and topped it off,but no diffrence only in the oil pressure needle.when it does this the needle moves alot but,when it doesnt the neddle is right in the middle.it runs very rough when in noise,but runs perfect when no noise is present.

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  • Posted on Jan 06, 2011
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Sounds like you have sticking lifters. On your next oil change run motor flush through it before you change oil. There's also additives you might try of oil change isn't in near future - Risolone or Marvel Mystery Oil (I know, sounds weird) both are fantastic products.

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