For my 2000 Miata the cause was a faulty cam rotation sensor.

On 1/13/05 6:53 PM, in article
, "hab21"
> wrote:

> I have a 2000 Miata. The engine began occasionally not starting. When I
> get it to the mechanic it starts. Then the check engine light comes on.
> I have replaced plugs, wires, battery, etc. It still happens ocasionally.
> It is also throwing gas through and has damaged the converter.
>
> Anyone have any ideas??
>