Have you checked the simple solutions? Like checking the spark plug? Otherwise it is a relatively well known fact that rx7's do not run more than 100k anyway. The rotatory engine is efficient but does not have a long life.
broken timing belt, check it- you wont get a spark if its broken
You are missing fuel or spark.
Chck fuel, spark, and compression.
It could be your coil but then again I would have to see it to know.
If your Honda CRV cranks but won't turn over because the spark plugs are not getting spark, ensure the wires are connected. A loose spark plug wire can cause this issue.
Could be many things. Mostly id check the coils first as they are what cause spark.
the first thing I would check is, fuel, spark, coil, ignition module
Check engine compression Check engine timing
check all the fuses.
if i sccidently shorted the battery car wont start but cranks whats wrong ??
engine cranks but wont start means one of these things.. Air, Fuel, Spark, or compression
If it's getting no spark, use a code scanner to see what the computer reports. Typically the computer will be able to detect electrical problems and tell you what's wrong.