Timing chain?

[akrada]

Well i searched and didnt find much help for the sound im tyring to diagnose First off I have the SOHC motor. When i start the truck idles good except for clicking of AC. But when i put into drive i hear a rattle from front of motor almost like a gargling sound. only at idle thought as soon as its over 1kRPM sound goes away. It didn't start till after i replaced intake manifold gaskets upper and lower. Could that be related some how or just dumb timing? I suspect its the front chain tensioner? Any help apperciated. Yes i have litte rattle around 2500RPM but not like when its at idle in drive.

 

[01 Black Sport]

my damn exploder is getting fixed right now because of that rattling chain at 2500rpm, but the top recalled tensioner would only rattle at initial startup. i guess if you listen closely at idle u might hear a tick, very faintly.