Broken rocker arm
I recently purchased a 99 forester sohc with a bad headgasket. Im fairly familiar with the ej series of engines but encountered something ive never heard of before. When removing the valve cover on the left cylinder head part of an exhaust rocker arm just dumped out. I am always very careful and patient when removing stuff so I know I didnt bump it or anything.
Now it was only one of the tabs that broke so there was still 1 exhaust valve opening. The cyl head and valves with the rocker problem are caked with carbon buildup so i know its been like this for a little while. The valves are straight and not frozen in place.
Before the teardown the car ran and drove, just leaking a little coolant out the bottom of the head. Im not sure what could have caused the rocker arm to snap. Has anyone else heard of something like this? The valve adjustments were a little tight, maybe that had something to do with it.
I ordered a new rocker from the dealer for $48 and i should be fine.