Hi guys own a MAZDA 3 2010 2.0l with 152000 miles on it, lately the car has been having an interment hard starting issue. It only does this on a cold start with the engine has been off for a while. If the engine is warm it will start up perfectly. Basically on a cold start it will take a little longer to crank then normal. Got my battery, starter and alternator tested and they passed the test. Apart from this long crank start on a cold start the car drives perfect with no misfire, rough idle or no check engine light. The fuel trims are within spec. I did notice before a cold start if I put the ignition in “on” before “start” for a few seconds it will start up perfectly. So what do you guys think the problem is?

 

I would possibly look at the fuel pump issue (filter needs replacing?) or the throttle body.

 

was the problem resolved? What was it?

 

woow this was a long time ago, don't have this vehicle anymore, it was one of the battery cables that was causing the issue can't remember which one though.