Having problems with your 2002 Subaru Legacy ?
Knocking on top of motor its not smoking and has
\015 Knocking on top of motor its not smoking and has been ging fine then it just started knocking\015
The timing has probably gone out of adjustment. Do not drive the car until you have it checked out. You may or may not have a valve / piston clearance. Sometimes carbon build up can make a clearance engine no longer have it. I hope this is the case with your engine. It is possible that you are experiencing pre-detonation (knocking and pinging) This can be a timing issue as well. An auto mechanic or experienced friend should help you with this issue. Good luck with your repairs. Thank you for letting me serve you on Fixya.
Repair Help & Product Troubleshooting for 2002 Subaru Legacy
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