Question: I have a 4-kW Marine Onan genset with 600 hours on it. If I let it run for a lengthy period it produces so much black smoke that a residue discolors the hull around the exhaust port. A year ago, I cleaned the heat exchanger and installed a new raw-water pump. There are no overheating issues. Do I have an injector or rack problem?—Charlie Carpenter, Morristown, New
Maintenance All Articles
Now and again, I serendipitously stumble across an onboard problem well before it snowballs into something expensive. For example, I was recently talking with my industrial-electrician brother and the subject of...
Question: I have a pair of Detroit Diesel 6-71 TIBs in my 1990 Ocean 48 Super Sport. I love both the boat and the motors, but the Detroits have always been loud at the exhaust end of things. As I grow older, this noise is starting to bother me, particularly at times when I have to shout to be heard on the flying bridge at cruise speed. Muffler companies tell me that modern
To loosen a sticking oil filter that you can’t get to unscrew with a standard filter wrench; simply attach a hose clamp around the filter’s base, close and tighten it, and, after positioning a flat-head screwdriver sideways against the screw housing of the clamp, gently tap it with a hammer. I’ve had success with this method on more than one
The 30-foot Carver Santego was for sale and up on the hard. From a distance she looked gray and tan instead of her original white with navy and black trim with...
Question: I have a 1994 Mainship 31 with a pair of 315-hp Yanmar diesels with 2,000 hours on them. While running at full throttle (about 33 knots) for five minutes, the starboard engine temperature creeps up enough to set off an alarm. If I ease ‘er back to half-throttle, the temperature returns to normal after a couple of minutes. The starboard engine has always run a bit warmer
Question: While performing routine maintenance on my Caterpillar C7, I was surprised to find a substance about the size of a quarter at the top of my Racor—it looked like algae. There was no water in the bowl, and the engine-mounted filter was found to be clean. My Cat runs fine now and I would like to keep it that way. I am getting a lot of suggestions from friends as to what
A cheap and easy way to prevent costly prop damage.
It was an interesting suggestion, really.
Some weeks before, Heath Schuman of Nautic Air had UPS’d me an experimental version of his portable NA20 air purifier to temporarily try out on my trawler Betty Jane. I’d placed the thing on the dining table in Betty’s saloon straight off, plugged it into a nearby 110-volt outlet, and after securely closing all
A contrarian take on battery replacement
All batteries have terminals and cable connectors that need to be periodically cleaned, preferably with a battery brush. I’m guessing I’m in the same boat as a few other folks these days. I’ve got three marine batteries salted away aboard my trawler Betty Jane...
Walker Engineering has been making diesels breathe better for more than two decades.
I used to crew on a 43-foot sportfisherman that was powered with twin 625-hp Detroit Diesel 6V-92s, and those engines were tank-like. In fact, the current owner of that boat has 3,000-plus hours on those original motors and they’re still going strong. But after
It was astonishing, really—the near-total absence of useful information on the Internet concerning the renovation and/or replacement of marine vinyl cushions. Sure, there were plenty of canvas and upholstery shops listed and some were even conveniently near where I keep my boat. But the related Web sites were pretty unsophisticated and, when I telephoned them, the results were often less than
Any boatyard can refurbish an elderly vessel, but where do old yachts get new lives using traditional techniques? The answer is the Newport, Rhode Island-based International Yacht Restoration School (IYRS), a non-profit organization that’s devoted to teaching boatbuilding and boat preservation the way it was once done. Indeed, IYRS students and faculty focus solely on bringing back to life
Q. I have a 2003 Sea Ray Sundancer 420 and am moving from the New York City area to Florida soon. Do I need to do anything different in Florida in terms of boat maintenance? I am especially concerned about the warmer waters down there and the algae growth in fuel tanks I've heard so many bad things about.
North Haledon, New Jersey
As an unabashed booster for boats and boating, I’m a tad amazed to find myself admitting that we boaters have a wholly invisible but smelly problem: onboard air quality. Consider my own 21-year-old, meticulously maintained trawler Betty Jane. Like lots of other vessels, she mostly gets used on weekends, and throughout any given weekend, especially during the summer, she’s likely to be almost
When my buddy Bruce said he had a like-new Jabsco Porta Quick oil changer he’d give me for free, I was happy. When I discovered the unit sells for $209.99, I was ecstatic.
The Porta Quick is a 14-quart plastic container/reservoir with a 12-volt electric impeller-type pump on top. A cord with alligator clips supplies battery power, and a toggle switch
So a guy walks into a boatyard and says, “Hey, I gotta have a bow thruster.” In a few days, an open-ended job begins, with the bill contingent upon the yard’s hourly rate, expertise, and the man-hours worked. When the guy returns he finds his boat starring in a veritable horror show. A couple of first-time thruster installers have blundered into a foam-cored transversal while cutting a hole in
I explained to Joe Galati of Galati Yacht Sales that PMY was looking for a cruiser with incandescent or halogen lighting that we could swap for LEDs from Imtra Marine. We had four objectives:
Like lots of folks, I’ve got two diesel powerplants onboard, one for propulsion and the other for auxiliary power. And just a few months ago, the latter began showing signs of the creepin’ crud—it was overheating, sounding hoarse, and exhaling a greasy gray smoke under load.
The most telling symptom, however, seemed to be that the cooling water that was supposed to be
Remember “Wax on, wax off?” It was Mr. Miyagi’s discipline-building anthem in Karate Kid. For years, I figured it was merely a figment of some movie maker’s imagination—it couldn’t be applicable to boat detailing, right?
Wrong! As part of my campaign to do my maintenance chores myself, I recently detailed my trawler Betty Jane and made her literally sparkle. But I had to cheat.
I’ve just purchased a new diesel inboard. What’s the best way to break it in without damaging it? -- Walt Reid
Most manufacturers list procedures for break-ins in their operations manuals. Stick with these but also bear in mind the following routine. Remember, the first 50 hours of operation can significantly affect your diesel’s life expectancy.
Examine the basics: Look for
Although I’m loathe to acknowledge my naivet concerning such matters (especially since I’m 61 years old and have owned boats all my life), my approach to in-water bottom cleaning was plain as dirt—if not downright cavalier—until recently. It went something like this: When growth on chines and running surfaces slipped past the faint-slime stage, I’d simply dial up a marina-recommended dive
Keeping a 19th-century whaling ship afloat requires a combination of old-world craftsmanship and new-age planning, especially when that ship is the Charles W. Morgan, the world’s only surviving whaling...
Maintenance issues are constantly stalking boaters. The simple fact is that on a boat stuff breaks and things leak. Boats are complex mechanisms with dozens of systems and hundreds, if not thousands of components. But three issues seem to account for the majority of problems afloat. Here’s what they are and how to deal with them.
Arguably, the most important component on your boat is her