Park the car! Do not drive it another mile! If it's knocking, don't be rocking. If that IMS fails your entire engine could explode. There are many, many reportable instances of fiery deaths of drivers who have failed to heed the warnings. Park the car.
Oh... you might enjoy better luck/proper responses of your inquiries if you leave the NEW MEMBER INTRODUCTIONS and present your inquiries in the GENERAL DISCUSSION section.
