Another few question about my 2000 90hp Johnson V4. While it always cranks, it takes several 5 sec. choked key turns with a freshly primed bulb (good 87 octane and TC-W3) then seems to idle rough even after it is warm. Maybe I'm expecting too much but why doesn't it crank up on the first or second key turn? Anyway.... I removed the Champion spark plugs and found that all four had a wet, black, exhaust smelling substance on the fire end. I thought this may be a symptom of over carbonization so I performed a decarb with Seafoam Deepcrank. After decarbing and running the engine with the water ears, I replaced the plugs with new Champions (I can't recall the number but they are the correct plugs) and gapped them at .30. I took it to the lake yesterday and after several choked key turns it cranked and idled the same as it did before. It ran fine at speed as it always has.<br />I got it home, checked the spark plugs and found that the new plugs now have the aforementioned "stuff" on them. Is this normal? Shouldn't the plug tips be clean and dry especially after running the engine hard? Could it be running too rich? Thank you!