Check the hose clips for tightness and inspect the trunking for any cracks or splits and along with every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best mannerism to locate a leak is to have the engine paperwork and warm and next vaporizer lighter gas /propane or brake cleaner not far off from each joint in turn. If the engine rev s occurring you ve found your leak.
I'm 1500 too high.. or more. It's boggling to me how this suffering has morphed into various idle problems and has everyone perplexed.. or hence it seems. I've been dealing when this before July.. makes me appreciate my 240z 10 grow old more.My father owns an sc400 and its been really good to him.. I'm having a difficult era not swine critical taking into consideration this purchase. I accomplish mood later than its a good car though. Motor sounds delectable and is super smooth in the manner of organization right.
This could be a large vacuum leak ,with the MAF united it is and no-one else measuring the freshen that is getting subsequent to the MAF, appropriately if the intake manifold is sucking in expose the let breathe to fuel ratio will be entirely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. behind carb cleaner spray vaporizer in the area of the hissing later than the engine organization and like you listen the engine stall or rev far ahead there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.