Trueoo7,
Discontect the fuel inlet line and plug it. A 3/8 bolt works great. Then disable the igntion,remove fuse, disconnect the wires, ground the coil wire with a jumper wire,whatever works!! A few years ago an older gentelman I know got 3rd degree burns doing a compression test. NOT FUN!
Safety first! Dont forget the wet test, a shot of
oil to seal up the rings.
