Duck
Sarcastic remark goes here
Skateboard is right.a simple light bulb, using a 12v socket, much like a tail light.......
it will "strobe" on the firing of number one cylinder....
obviously, as smart as you are or claim to be, you thought you'd discount what i had suggested, as even @Duck (and maybe a few other gear heads) would have known how this could be done.....
you may now go back to your desk jockey's job....
There's a mark on the crankshaft pulley of a car engine and a little stationary mark on the timing cover.
They happen to line up right when the #1 cylinder is top dead center and is supposed to get it's spark.
A timing light senses the high voltage in the spark plug wire and triggers an instantaneous flash of light and because it's just an instant flash, you can see precisely where the mark on the pulley is relative to the stationary marks on the timing cover and you adjust accordingly.






