99 LHS misfire
 

noted a couple of days ago when the weather was warm and the car was warmed up, it was very hard to start, when it did start it acted like it was tunning on 5 cylinders for a minute or so, finally smoohed out and ran fine, when i got home i shut it off waited a couple of minutes and tryed a restart, same thing. when stone cold it starts right away. it showing a po300 random misfire
so i changed plugs, airfilter oil and filter , fuel filter. car runs great, fantastic gas milage, but if the outside temp goes above 60 it struggles to start. i havent checked the fuel pressure yet, but i have cycled the key a few time to pressurize the fuel rail, doesnt seem to make a difference.

anybody run into this