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6 bolt engine noise

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jakeachy

15+ Year Contributor
189
2
Nov 21, 2007
CF.WI, Wisconsin
6 bolt engine noise - YouTube

It seems too high pitched to be rod knock. Last night, the car was super smooth and happy. Go to start it today and it makes this noise. The car has 10 miles since a rebuild. All rod bearings were .002 w/ acl race and arps. no specks on the dipstick.
no noise when cranking it to start for a long period of time

The timing is dead on, BUT, as the video shows the belt is seemingly loose. Is it the tensioner?

Oil is rotella t5 10-30. The car was NOT broken in during those ten miles. It had a bad boost leak at the TB, so I puttsed it around and did some vacuum engine breaking
 
it sound similar to how lifter tick sounds.. and maybe injectors. and is it me or is that timing belt super lose? i know you mentioned it in the post.
 
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