Been having issues with my 2JZGE motor. Started yesterday. In the last 2 months I've replaced timing belt, water pump, intake manifold gasket. Spark plugs. 3 of the 6 plug wires are currently brand new (lol.. starres the job at work thinking it was going to be easier than I thought then realized I didn't have all the tools or time to finish, will finish today) new distributor, new O2 sensors. Actually went junk yard shipping yesterday looking for some interior parts, seats etc... She was running great all morning. Let it run trying to diagnose a tiny vacuum leak I can hear near the Y plenum. D