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Whats that sound?

Could it be your valve train, there famous for making noise especially if your running synthetic oil.
 
More information would help. When does the noise occur? At idle? At cruise? Under load while accelerating? In every gear? etc. Also very difficult to diagnose without actually hearing the noise.

A "marbles" sound indicates detonation to me but hard to say with such limited information.
 
More information would help. When does the noise occur? At idle? At cruise? Under load while accelerating? In every gear? etc. Also very difficult to diagnose without actually hearing the noise.

A "marbles" sound indicates detonation to me but hard to say with such limited information.

Big plus as Dolt says with more info, what gas are you using and what mods or recent work has been done ETC
 
I know when I hear them it means I need to hold my head still! :D

Sorry, I couldn't help it.
 
Like we used to say in the car world, "Just back car up to phone and I'll be more than happy to diagnosis it for you.........
 
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