Rod knock or Main bearing knock?

[PROX4x4]

Originally Posted by mrbond

lol i have this exact same problem. If you have the stock air box in place, check to see if that little snorkel is hitting the frame next to the radiator. I took off the snorkel and I haven't heard that sound again. Just a suggestion - better something cheap and stupid rather than something big and expensive.

Mine was exactly the same problem and as you said I just super glued that little thing in it's slot and haven't heard the noise again.