Hello Gentlemen and possibly ladies, I could really use your help on a 1994 Mercruiser 5.7L -350 - had the engine rebuilt - put it back in just like I took it out (no extra parts). All of the other electrical components work great ie. starter, sumps, tilt, etc. but I have no spark at the spark plugs. Traced the wiring diagrams and they look right as it is a stock boat. I have voltage at the coil, distributor and the Thunderbolt IV ignition (which is mounted on the distributor). What am I doing wrong ? Is there a ground wire from the disributor to the intake manifold ? Ideas welcome! Thanks.......
