My car starts when cold but cant if hot, mileage 67,000 as when dis problem came up.

Asked by Sep 07, 2015 at 04:32 PM about the 2005 Mazda RX-8 Sport AT

Question type: Maintenance & Repair

Is thermostat for the climate control system
or it needs engine rebuilt?

1 Answer


You need to take it to a Mazda dealership to have the compression tested. Odds are that your apex seals are worn out and cannot create enough compression to start the engine while its warm. This is a common issue with the RX8's rotary engine and unfortunately Mazda is the only place with the equipment to test it.

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