Originally Posted by 01tacoprerunner
It silences pretty quickly, like after i give it gas and go. It only clicks when at 1st idle.
My truck has a crack in the manifold and it does exactly the symptoms your describing. When its cold started the truck makes a ticking noise and once you get the manifold hot the metal expands and the crack goes away, causing the ticking noise to go away also. You should also notice this badass sounding popping noise from your exhaust when you down shift back to first gear approaching a redlight. I have the new manifold, but have not replaced it because of the sweet exhaust noise the cracked manifold creates.