Bought new exhaust manifolds during engine rebuild, but will check torque in case some have come loose and will check plugs since it had blown three plugs a year ago before rebuild. Just can't figure out were this came from, since I got it through the breakin period without a hitch. Thanks for the advice and your responce!!

 

Get yourself one of these or just put a long screwdriver to your ear and touch parts where you think the noise is coming from.

https://www.harborfreight.com/mechan...ope-63691.html

 

​​​​​​ thanks for that information I forgot about Harbor Freight I'll go pick one up I appreciate your assistance with this