OK well I have some more info for ya. I was thinking that if it is an injector ticking, that if I unplug each one (took me awhile due to the fact that I had to pull the throttle body off, unplug each injector, one at a time, on the drivers side, then reinstall the throttle body) and start up again then maybe I could pinpoint which injector was ticking and replace it. Well I did and again still the ticking. Also, can You here the ticking from under the truck as well? Seems like I can. I did look closely but did not see an exhaust leak. So looks like I have to take it to the shop after all... What is really confusing me is that it Does Not tick in the morning or when it is cold???? Was trying to save some $$$ <img src="/forums/images/graemlins/frown.gif" alt="" />