Ticking lifters?

When I start it in the morning it clatters till it is at OT, then it quiets almost completely. Today it won't quiet down all the way. I suspect crap in the lifters because When I bought it, I had to pull the oil pan to clean out the sludge and replace the pickup seal. Is there a quick and dirty way to clean out the lifters? It's probably not worth replacing them. But it runs rather well except when it clatters.