Just did an intake and plenum repair with hughs kit on my 99 durango 5.2. noise went away and hesitation, but now I'm leaking oil from harmonic balancer. I drove for a while and everything was fine for about 20 miles then my temp went just above 210. pulled over immediately and let it cool, checked fluids. levels and colors were good. started back up and ran at normal temp for the 15 minute drive to my buddy's house. looked it over and looked fine. later on my way home it started squealing and oil pressure dropped for about 5 seconds. I pulled into a gas station and oil was dripping out pretty good. did I screw something up to cause this? and what steps do I need to take to fix this?

 

Sounds like front main sea as long as it is coming from the harmonic balancer and not running down the front of the engine. If that’s what it is then you need to pull water pump and timing cover off. Just be careful not to wreck the oil pan gasket when taking off the timing chain cover.