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try to explain the knock....is it in top or bottem of the engine?did it do it before you canged the oil?
if i were you i would change the pil flter...it may be calapsed on the inside...this is what to do first ..sinse it just started doing it after the oil change
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sorry /i hit the wrong key.i ment oil filter..i would change it asap..to prevent engine damage
i understand that
but you sid it did not knock before you changed the oil....the filter they installed may be bad..seen it happen many times...thats why i say change the filter first
Auto mechnic think egine is going out
how is the oil presure?
since it sarted this right after you changed the oil...i would gamble on changing the $8 filter ..before anything else
1/2 quart or even a quart low would not hurt the engine
this is something to try....it may or may not fix you...but i hope it does