When cold, spray it inside, try to get it to the moving parts as much as possible.. let it stay there for like 10 to 20 mins..
start up the car, let the car's temp go up to about 1/4th.. rev it constantly and start spraying inside the carb.. you will see white/black kinda smoke and don't let the revs go down.. spray 3 to 4 times.. and thats it.. when you feel the engine is smooth then let it idle, stop it after 2 or 3 mins.. put the element back and you're good to go..