sometimes they fail... sometimes the valve stems get too tight in the guides.. cause stuff to bend.. once in a while a rocker slot will wear into the side of the rocker arm studs and lay over slightly.. exerting excessive side force on the pushrod..
small block chevy application i am taking it..
how is the compression on the cylinder..
can you do a cylinder leak down test.. without cranking the engine only turning it with a breaker bar slowly on the crank snout. if both rocker arms are off.. you can do the cylinder leak down test with the piston down also. just to verify the valves are closed and sealing.. impact with a piston or debris on top of the piston can also cause this.. but it will usually bend the valve head and keep it from closing.. was that on the intake or the exhaust. if you don't have a cylinder leak down tester.. any device that can seal in a spark plug hole and allow compressed air to be directed in... compression tester hose.. modified dead sparkplug with a quick connect plug screwed in..
probably a safer location for the piston to be.. for this test today..
hint.. rock the crank back and forth and see how much timing chain play you have..
Exhaust side.
I have an adapter for air. I used it to change the stem seals a couple years ago.
Also, valve is free when tapped with a brass drift.
Did you just make some adjustments to the valve train? Overrev the engine and pump up the lifters? This is why we go one piece pushrods now instead of the welded 3 piece ones...
No adjustments recently. I did notice some excess ticking in the last couple weeks though.
Overrev....hell yeah, all the time, ha.....I beat the snot out of my poor truck.
Looks like the ball just fell off.
I'm trying to locate a used rod to put it back together. Of course, me being opposite of a hoarder,
purge master is what my buddy calls me, I don't have any spare rods laying around, DOH! :drunk: