I'm new to this forum, any help would be great. We did a Head gasket on an 04 sequoia 4.7L to fix a stripped thread on a spark plug tube on the passenger's side. car starts up right away but has a valve type noise on that side. one of my techs thinks the vvt actuator might not be priming up because the noise is towards the front of the engine by the timing cover. has anyone else experienced this type of problem?? any help would be great.