Have Subaru Questions? Ask a Subaru Mechanic and Get Answers ASAP
Hello, my name is***** sounds like you have a valve problem. Next step is to do a cylinder leak down test which will tell you if problem is intake valve, exhaust valve, or piston ring related. If air comes out oil cap it is piston related, exhaust then exhaust valve, or intake would be intake valve. Let me know if you have more questions or if there is anything else I can do to help. Thanks.