so I haven't been driving the green brick for a while, several repairs all piled up at once...just been moving it from one side of street to the other...damn odd-even parking....upon startup today, new noise, engine speed related ticking...I'm thinking collapsed lifter? could I have broken a valvespring, or keeper or something? sounded fine yesterday...checked oil, level fine...afraid to drive with all that racket going on....any suggestions for this newish shade tree mechanic are welcome as always...