Valve Lash Adjustment

It's possible the lifters were bled down when you adjusted them and when you fired it up they pumped up and held some valves open. I had that happen once and since then I adjust one set of valves and spin the engine over 15-20 seconds then do the next 2 valves. Spinning it over pumps the lifters back up so you get the adjustment right. Takes a few minutes longer but it makes sure you get them correct.

BTW: Here's a handy chart reference to use when adjusting your valves.

Valve lash adj.jpg