问：变速杆卡在中立。刹车踏板卡住。不会下去。汽车坐了5年。后歧管区域非常大声的排气泄漏。建议？

汽车已经5年没有跑了。91'Mitsu 3000GT VR4涡轮增压。潮湿的存储区域。生锈已经积累了很多。3个问题。1.舒适的人似乎陷入了中立。这是什么原因？离合器卡住了？我以为可能会尽情努力尝试用热板使它松动？2.刹车踏板卡住。 Cannot be pushed down. Master cylinder? 3. Very loud helicopter sound exhaust leak near rear cast iron exhaust manifold. A mechanic thought it was cracked manifold. People who specialize in my car im California said the manifold never cracks even with triple the horspower race cars they own. EGR valve or flange connector? I remember a rear spark plug never got tight as if stripped but car still drove for a few years. Maybe that leaking exhaust? Super tight space by the firewall to see anything. No obvious leak seemed to show itself unfortunately

我的车有98000英里。
我的车有手动变速箱。