88 Supra

[Jeff_5_7]

ok i just finished a head gasket job on the car It dosent want to start ever when it is cold it trys but wont start i have ot hold my foot on the gas and turn the key and hold the keyto the start postion and it will start buy wont idle it has trouble idleing but i will hold it at 3000 rmps when and if i get it ot start and whne it warms up it runs fine and i can drive it for a while turn it off and if the motor is still warm it will start right up easy but if its cold it wont start the engine digastis came up withtrouble code for the engine 22 i dont no what that means Also somtimes when iget to to start it white smokes really bad for like 30 seconds i tihnk the cold start might be broken

HELP