I was told by my a dealer that I have a crack in the block of my 1973 Mercury 402 (water was coming out of the top spark plug hole). I pulled the powerhead and can see quite a bit of the block just by taking off the back block cover & exhaust cover. I haven't yet seen the crack. Where do...
My 1973 Mercury 402 (40hp) will crank but won't turn over. The problem is that I'm not getting a spark. I have replaced the starter and the solenoid w/in the past month. It ran for a while after that and then died-- hasn't started since. I've replaced the spark plugs and have checked for...
