What should I do?
I’ve got a 2.5l Subaru that is very shaky at idle. Did a vacuum test and the gauge needle shook rapidly between 10-14 inhg when idling. Just replaced all 16 valves and head gaskets and adjusted the valve gap so I don’t think those are the problems. What are your ideas?
Did you replace the springs?
shaking would indicate misfiring. See our FAQ for more information on that.