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Old 04-20-2022, 02:47 PM   #12 (permalink)
nis350
A True Z Fanatic
 
Join Date: Oct 2014
Location: socal
Posts: 1,106
Drives: 370z
Rep Power: 13435
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the noise is definitely external rather than internal like a rod knock. I'd focus on the exhaust area based on the nature of the noise - exhaust manifold gasket?

Quote:
Originally Posted by Unchained_Z View Post
It seems to run normally, it has a Greddy catback exhaust and Megan Racing (I believe) headers. Both were installed by the previous owner and have given me no problems thus far. Sound definitely seems to be coming from the throttle body or right below it but could be coming from a gap between the header and the block and echoing up. Ill check it out. Thanks
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