ok so i changed the plugs, wires, cap and rotor. didnt help. the sputter is still there. but i would like to add that it seems to happen when i come to a stop and try go again. it feels like im just tapping the gas pedal. no check engine light so i dont think its misfiring. so now i'm thinking its the injectors, is there a way to test each one or should i just replace them all? is there something else?

now on the anti-freeze leak. i think i found the general area. seems to be on the left side, the oil pan was all wet, the back part. so what i can see is it doesnt seem to be coming from the head gasket. it starts, from what i can tell, from the oil pan gasket or just above it. its dry from there up which doesnt make snce to me. but there is alot stuff in the way so i'm not 100% sure. any ideas?

one more thing i heard that the heads are prone to warping, is that true?

Oh and all the old plugs had normal ware.