My Svx of about 2 years now developed a problem. After I would first start car and temp gauge would start to move, engine would run very bad and create preasure on engine. It would clear up when temp reached normal. If you try to give it gas during the time it ran badly, it will skip stutter and blow oil. It will have no vacuum on air inlet and no preasure on exaust. Its as if the engine has no access to outside air. I assumed EGR problem. I have now removed intake and have tested most EGR and vacuum components. I removed EGR Vacuum control and noticed that hose are leading from intake to this valve is always leaking to atmosphere. I have taken this valve apart and it appears that it works this way. I just seems that this would always be a vacuum leak. Also if intake always draws air from this vacuum hose --dirt could get by the small filter in valve. I just need to know if this is proper operation of this valve> Thanks