I have a 90 crx si with a d16a6. i have done the timing, new dizzy, new plugs and wires, and cap. car has no spark. Could the main relay cause it to not have a spark. im getting feul and its turning over but no spark.

 

Every time i have had my main relay out my car will still spark, it doesn't get gas, but it still sparks, i would double check fuses (particularly the main relay fuse) and double check the new stuff. Good Luck.