How to test under load (dum question)

[spareparts]

the vacum pot will never operate on your boat as it will allways be under load, the only time a vacuum advance works is under light or no load. hate to tell you this, but your next step is to replace the distributor with a marine distributor. try ebasicpower.om they have complete retrofit kits.

Before you spend any more money on this thing, you muight want to do a compresion test, just to make sure your not throwing good money after bad.