What do I need to know about my diesel engine?

They say you never really own a boat, you just temporarily take care of it. As a new boat owner, you come to that realisation very quickly.

Even the start of a trip is usually more involved than just jumping in your car, turning the key, and hitting the open road. Instead, when it comes to a boat on a mooring or in a pen, a sensible outing starts with a basic WOBBLLE: Water, Oil, Belts, Bilges, Levels, Look and Electrical… Even the thought of it makes a novice feel like they have to become a mechanic.

And when you eventually face your first engine service you think: “Oh no, I better get a professional to do this one, to make sure it’s right.”

Then you realise that most of the cost you’ll be paying is not in labour to service the boat but in travel to the far-flung marina or mooring at which you choose to park your boat.

It gets worse when you discover that your engine is leaking oil or water after it has just been serviced by a previous ‘professional’ who rushed the job.

This is why understanding and maintaining your own diesel engine is not just a skill; it’s a necessity that could spell the difference between an unforgettable adventure and an unwelcome ordeal.

Imagine this: you’re out on the water, miles away from the shore, and your engine decides to throw a tantrum. With no roadside assistance service to the rescue in the middle of the ocean, it’s your knowledge and quick thinking that will keep you safe and get you back to shore.

So, here are a few reasons why as new boat owners we decided that learning at least basic diesel engine maintenance is crucial.

Knowing the ins and outs of your diesel engine empowers you to be self-reliant. Whether you’re cruising the Great Barrier Reef or exploring the secluded bays of Tasmania, the ability to diagnose and fix basic engine problems ensures your safety and the continuity of your journey.

Regular maintenance is key to extending the life of your engine and preventing major malfunctions. By understanding your diesel engine, you can carry out routine checks and maintenance, catching issues before they escalate into costly repairs.

While hiring a professional for engine maintenance and repairs is always an option (and sometimes a must), the costs can quickly add up. Learning to maintain your engine can save you a significant amount of money in the long run, allowing you to allocate those savings to more adventures at sea, or fixing more complex problems where you really need the expertise of an experienced mechanic, such as adjusting the tappets (don’t know what that is? Read on!).

Knowing that you’re capable of handling engine problems provides an additional level of peace of mind, not just for you but also for your passengers. It’s the assurance that no matter what happens, you’re equipped to deal with it, or at least manage it.

Diesel engine maintenance might seem daunting at first but, similar to all skills, it starts with understanding the basics. Here’s how you can get started.

Start by reading your engine’s manual. It might not be the most thrilling read, but it’s packed with crucial information about your engine’s specifications, maintenance schedule, and troubleshooting tips. If your engine is a few decades old, Google it. More often than not you can find an older model's manuals in forums or on the manufacturer's website.

Prevention is better than cure. This includes inspecting the engine for leaks, checking the oil and coolant levels, inspecting the belts and hoses for wear, and ensuring the fuel system is clean and free of water. The Royal Yachting Association (RYA) teaches WOBBLLE (Remember? Water, Oil, Belts, Bilges, Levels, Look and Electrical) ahead of every journey. Yes, it's tedious, but the fact that your boat operates in a marine environment, not on a road, makes it necessary to run through these checks frequently.

Many TAFE and community colleges and marine organisations offer workshops on diesel engine maintenance. These hands-on courses can provide you with the foundational knowledge and confidence to tackle basic maintenance and repairs.

You won’t become a mechanic and nor do you need to. Instead, it’s about learning basic problem analysis and solutions. Just ask your local yacht club training officer. Attending a course is also a great way to meet like-minded people and make new friends that you can call on and ask for advice when you run into a problem with your engine next time.

Some engine problems give early warning signs. Learning to recognise these signs can help you prevent bigger issues. For example, black smoke might indicate incomplete combustion, while white smoke could suggest a coolant leak.

No water running out with the exhaust is a major hint to turn off your diesel immediately and figure out why the cooling system is not working.

With a little bit of study (that engine manual comes in handy again) and a decent course, you’ll learn about all the basic signs that tell you to investigate before a major failure occurs.

Like any skill, practice is key. Start with simple tasks like changing the oil or replacing filters and gradually work your way up.

The more you do, the more comfortable you’ll become with your engine. And ladies, don’t be afraid to get your hands dirty.

Remember, diesel engines are simple. If you’ve ever had the chance to pull one apart to its core during a course it will seem way less daunting. They are also often mounted in tricky spots, so boat yoga is not uncommon – two birds, one stone!

Maintaining your own diesel engine is not just about saving costs or preventing inconveniences; it’s about ensuring the safety and longevity of your boating adventures across Australia’s beautiful waters.

By learning the basics of diesel engine maintenance, you’re not just taking care of your vessel; you’re being self-reliant and prepared in a situation that could turn a great trip into a potential disaster.

So, take the plunge into diesel engine maintenance –it's a journey that promises not only to enhance your boating experience but also to enrich your skills and confidence on the water.