Re: Rude 9.9 1980 crank seal
Look for a difference from one spark plug to the other after idling it for a few minutes with clean plugs. The blown seal side will run leaner, or not at all.<br />You'll never be able to tell the difference with old spark plugs. They'll both be dark.<br />Another check you can do is to disconnect the oil recirculation line from the bottom and make sure it pumps out oil when you run it.<br />The only way to be certain is to visually inspect it though.<br /><br />It turned out to be the right engine for your boat, eh?
I am so "impatient" (does it make sense in english?) to try it, and maybe on eastern passage next summer