Lately, when I've started up my car the exhaust blows out a small white puff of smoke and then stops, I think it's signs of a blown head gasket, but other then the smoke on start up it drives great and has no problems, the radiator also started to leak small amounts of coolant every now and then so im not sure what the problem is? I've read a few forum posts that say bad ecu capacitors could also be the culprit, heres a youtube video of the car starting up (note this was the first time its started up in 3 days, the revs were being held at about 3k by the ecu)
Heres the video
https://www.youtube.com/watch?v=k-MtOP9yvWw