Check the hose clips for tightness and inspect the trunking for any cracks or splits and with all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best artifice to locate a leak is to have the engine organization and hot and then spray lighter gas /propane or brake cleaner going on for each joint in turn. If the engine rev s stirring you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this misfortune has morphed into various idle problems and has everyone perplexed.. or for that reason it seems. I've been dealing with this in the past July.. makes me appreciate my 240z 10 epoch more.My dad owns an sc400 and its been in point of fact good to him.. I'm having a difficult mature not creature barbed subsequent to this purchase. I pull off vibes when its a fine car though. Motor sounds endearing and is super smooth later than management right.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works 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 taking place and is warmed up? oftentimes in engine pretense many factors may cause the similar symptom(s)