Just had Coils, Plugs, Sparks changed along with a new exhaust. Just recently noticed a misfire pop up on my car while driving and a few days later I got this start up issue.

Its an 07 RX8 with 104k miles on it. Any idea on what could be the problem if I just changed the plugs, coils, and sparks.

 

Does it only do this when warm or regardless of engine temperature?

 

does this regardless of the engine tempature

 

Check that the coils are connected to the spark plugs securely. Is the misfire P0300 random or P0301/302 specific to a rotor?


If you can read OBD sensor data, check what your short term and long term fuel trims at idle are.

 

so turns out the plug disconnected from the spark plug somehow...pushed it back on and its starting normally again!

 

Sweet deal, glad to hear it. Since you've got enough inclination to at least figure out what is and isn't connected - When was the last time you changed the plugs and coils?

 

the plugs coils and sparks were all changed under 1k miles ago. Along with new tires, a catback exhaust and catpipe from turboxs, and wheels spacers from garageline

 

These are things we like to hear!