06 Rx-8 start and idle problem

[Sephitrask]

When you say it starts rough, do you mean it is difficult, or that it shakes? Have you changed anything on the car since you bought it? is it stock? What is the mileage? Any idea on the maintenance history (engine previously replaced, cat, coils, oils and fluids, etc) IF it is a hard start, Before you get a compression test check and see if you have the revised starter, then get the test done. Also check for vacuum leaks, they can cause it to choke like that as well. If all those items check out, there is a good chance its your coils. FYI, Oreilys carries the updated coils for our car for $33, half the dealer price. And they are the same part from the dealer, same stamp on the side, from the same plant, just without the dealer markup. They also carry our spark plugs for $20.