take a spray bottle like for windex or somthing of that nature put some water in it and spray the manifold,vacume hoses,mating surface,throttle body,idle screw and base were the injectors sit wile the car is running. trust me you will know if you hit a spot thats leaking.this can also be done with carb/choke cleaner just be carfull were you spray it! iv seen guys go a littil crazy this way and start a fire!