Engine

If you allow air to enter the supply line of an engine it will promptly airlock the engine and summarily shut it down. Here are the steps to get things going again.

As outboards evolve with each passing year, so too has the know-how of mechanics that service these increasingly powerful behemoths.

Hydrogen fuel cells are now powering boats, but they still have a long way to go.

With normal maintenance and regular TLC, a genset can thrive for a long, long time. Here’s how to get the full life expectancy from yours.

When it comes to your boat’s engines don’t believe everything you hear. In the interest of keeping our readers informed, we debunk the five particularly egregious engine misconceptions making their way through the boating community.

Supercharged 4.6-Liter V8 has best power-to-weight ratio in industry. We tested Mercury's new 450-hp 450R outboards on 10 boats including the Cigarette Tirranna, Midnight Express 43 Open, Sea Ray SLX-R 350, and Formula 430 SSC. Read our full review here.

When was the last time you gave your turbo some TLC? If you took more than a few seconds to answer that question, maybe the time is now to show it some love. Learn what you need to do here.

Swapping out old outboards isn't as simple as you may think, but it's worth the effort and expense to upgrade to high-tech motors.

The demand for speed has been around since water’s been wet, but don’t forget that great performance is about more than sheer horsepower.

The best skippers are careful listeners and very in tune with the sounds produced by their engines.

Sounds or vibrations a little off? Keeping this advice close to heart can help the next time you run aground.

Our expert walks you through ten easy, but important, tips that will help you keep your boat running smoothly.

Engine overheating? There are some typical and not-so-typical culprits.

Head trouble off at the pass by giving your boat a thorough physical. Learn more here.

Repowering is not to be taken lightly, but with some expert help and good advice a fine old boat can run like new. Learn more here.

If your inboard(s) should fail, you have a very important--and potentially costly--decision to make. We help you decide if you should repair, rebuild, or remanufacture them.

Hearing and Seeing the Genset on Your Boat.

Engine manufacturers created a lot of exciting buzz at the Ft. Lauderdale and Miami shows.

Keeping through-hull fittings exercised is a simple way to make sure they work. But that’s only the beginning of what you should be doing. Learn more about these critical component here.

With hundreds of inspections under his belt, Capt. Richard Thiel explains what engine room essentials you need to look for.

With marine-store shelves sagging under fuel treatments that claim to address a variety of problems, Here’s a closer look at three that just may do the trick.

It’s hot, cramped, and hard to reach, but your engine room still needs a good scrub now and then. Here’s how the pros do it.

How closely should your oil match your engine?

Air is just as crucial to proper engine performance as fuel.