The Diesel Engine Manual for the Rest of Us If you were surprised to learn that your boat's engine has no spark plugs, you're not alone. If you're like the rest of us, you want to know how your engine works and how to keep it working, but you haven't come across a simple, nontechnical treatment of the subject. Until now, that is. Designed especially for non-mechanically inclined boatowners, Know Your Boat's Diesel Engine...