i have three trouple codes when i used the predator and they were

p0455: evaporative emission system leak detected(gross leak/ no flow)
p0457: evaporative emission system leak detected(fuelcap loose/off)
third one is cylinder 5 misfire

i have a question about the first two codes, how can i solve them??

 

tighten your gas cap? lol

 

You can lookup the codes and posible causes here...

 

thanx for the help

as for the 5 cylender misfire

there was a water coolant leak in it!! in the spark plug and the coil