my 70 hp yamaha is a 3 cyl... i have been having trouble getting full power on the water... i unlinked my 3 carbs, and each individually will rev up the engine except one... what can i diagnose this as? is it not firing, or is it gummed?
Spray some mix into that dead carb and see if it increases the RPMs.<br />This will cinch it to iether a fuel or ignition problem.<br />Check the compression also.
