I just changed my plugs and started her up, she started fine than i huerd a little ticking sounding like it cam from the front of the engine, i shut her down because i didnt want to rick anything. i installed some NGK's, no problems before this, Any thoughts???

 

Plugs the correct length? I have seen plugs that were a hair too long and the tops of the pistons were tapping them causing a clicking sound. Also, are they seated properly, tight enough?