Can you use a timing

hi it all depends on the cars age as most cars 15-20 years old are controled by the engines computer and cannot be changed manually but this said on the crankshaft pulley there may be a top dead centre mark on it if so get a protracter [ the half moon thing that shows degrees ] and you can then chalk your own timming marks on it then you can get a normall timming light to see what your timming is doing just like normall but you won,t be able to alter it as even if you managed to alter it the engines competer will just reset it