Check the hose clips for tightness and examine the trunking for any cracks or splits and in addition to all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to find a leak is to have the engine direction and hot and then spray lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s taking place you ve found your leak.
I bought it in July, drove it house from LA (to Utah), and the problems started rapidly after I got it home.Any supplementary help you can come up with the money for is appreciated. I don't know what else to do but say you will it support to the dealer. I know I've got the shop foreman lively on it at the dealer, but I yet quality its pushed to the put up to as its obsolete and everyone loses in this situation.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you going on to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms stirring and is warmed up? oftentimes in engine proceed many factors may cause the thesame symptom(s)