What to Check When Buying a Used Ducati
Whether you're buying a used Ducati Monster, Scrambler, Supersport, one of the 916-derived superbikes or even a Panigale, there are a few uniquely Ducati things to check that are different to any other motorcycle.
I've owned my fair share of Ducati motorcycles (with more to come!), and over time I've learned there are a few things to look for when buying a used one. I keep learning things, so I want to pass on what I've learned, both for my own posterity, and to help out others.
There's nothing specifically scary about Ducati motorcycles. They seem intimidating because they're Italian and somewhat "exotic". Italian motorcycles have a reputation for being finicky and difficult as well as expensive to maintain. But most motorcycles have their own peculiarities, and once you find your way around Ducati v-twin engines you'll magically find that they all have a lot in common!
Oh but then we'll have to learn V-4 motors. One day, when I can get one for less than $4K, anyway.
In addition to the regular things you'd check on a motorcycle, there are a few specific things you must check on a Ducati.
In summary... try to buy a Ducati that
More detail to follow.
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Were the valves serviced recently? Were the belts replaced?
All Ducati motorcycles need valve services and replacement belts.
Every motorcycle needs to have their valves serviced... even though, in my experience, many owners of cheaper motorcycles never bother, even skimping out on regular service like oil changes and chain service.
Most used Ducatis (except recent supersports) use belts (rather than cams, chains, or gears) to drive their valves, and so those belts need to be periodically replaced as well as they get brittle and might break.
What makes Ducati different is (I think) that like BMW they're considered a "premium" motorcycle so the service tends to get done, and so people notice "hey, this is much more expensive!" Secondly, the timing belts are more uniquely Ducati. Most modern motorcycles use gear- or chain-driven cams, which don't need to be serviced as much.
The periods of inspection and complexity varies by the "generation" of Ducati, roughly.
Generally you're best off Googling the service intervals for your motorcycle, but this is roughly how they break down.
"Original" (1993-2004) air- or water-cooled, 2 valve engines: valves inspected/adjusted every 6,000 miles/10,000 kms, and belts replaced every 12,000 miles/20,000 kms or two years (whichever was sooner.
This applied to every air- and water-cooled motor up to around 2004.
In air-cooled motors, it applied to the 600, 620, 750, 800, 900 and 1000cc motors, e.g. the Monster 620, 900SS, Monster M900, Multistrada 1000DS, Monster 900ie, S2R800 and S2R1000.
In water-cooled Ducati motorcycles it applied to the 916, 996, 998 and 999, as well as the 748 and 749. It applied to the S, SP, SPS and R models, among others.
Of note is that you have to replace the belts every two years — even if the bike has done zero miles! This means that if the seller tells you "belts were done last year", you still have to do them in a year. You can do them yourself, though, and the service for belts alone isn't expensive (don't let them talk you into doing valves if it doesn't need it).
Second-generation air-cooled 2 valve-per-cylinder V-twins: every 7,500 miles or 12,000 kilometres for a valve inspection, and every 15,000 miles or 24,000kms (or two years, whichever comes earlier) for belt replacement.
This includes the Ducati Monster 696 and 796, Ducati Scrambler (both original 803cc and 1100) and Monster 1100.
The inspection interval was widened slightly, but you still had to replace the belts every two years.
More recent V-Twins: Generally wider valve inspection/service intervals (but no fixed rule).
Starting with the Ducati 848 in 2008, service intervals increased massively to every 15,000 miles/24,000 kilometres for a valve inspection/adjustment! But you still had to replace the timing belt every two years. The same was true of the Ducati 1098 and 1198 supersports.
For the Ducati Monster 1200, however, you had to replace the timing belt only every five years if you hadn't covered the distance of 18,000 miles/30,000 kilometers for that model (pretty generous).
On more recent Supersports, starting from the generation of the 1199/899 Panigales, Ducatis moved to a chain-driven valve system. Hallelujah! This meant that service intervals were every 15,000 miles/24,000 kms for the valves — but there was no required replacement of any belt.
Can you do the valve inspection/belt replacement yourself?
You can do belts and valves yourself, but it will take you a few hours to a full day (or two, if its your first time). If you're learning, start with a two-valve motorcycle.
Basic procedure for making sure any Ducati motorcycle has been serviced regularly
- Google the manual - many of them are available on "manualslib.com". (If it's not, it's probably one of the older Ducatis, with a 6,000 mile/10,000 kilometre valve inspection and 2-year belt replacement interval)
- Go to the section on programmed maintenance to be done by the dealer. It looks like this:
- Read the section on valve inspection and belt replacement (if it has belts). Check both the timing and the distance requirements. Make sure yours has been serviced recently, and that it hasn't done many kilometres since.
Otherwise, assume you'll be out another $500-1,500 for this service, unless there's hard evidence that it was done. That evidence could be photos, or a receipt from a mechanic.
Do the electricals (and charging system) all work?
Make sure the displays work and that the charging system works.
Check every light. Look at the blink frequency of the turn signals. If they're blinking quickly, it means that an LED upgrade was done without proper modifications to the relay.
Check the display. Many Ducati motorcycles (even early mid 90s ones) had partially electronic displays, which become faulty. Parts are expensive on these — expect to be out a few hundred bucks to replace something like a tachometer.
Take a voltmeter along to your inspection. Check voltage at the the battery with ignition off, idling, and revving.
Here's what you should see:
- Ignition off: Ideally between 12.5-13V, but above 12V is OK.
- Engine on: It should be charging slowly. Expect to see 13-13.5v
- Revving (a few grand): Voltage shoudl increase to 14 or 14.5V at the most. If the voltage goes higher than 14.5V, it's going to fry your battery!
If you see the voltage DROP as you rev, you have a dud battery. Replace it, and it should hold charge. Make sure you do this ASAP - a bad battery can draw too much current and overload the rest of your electrical circuit.
If there's a bad connector, loose wire or other fault in the wiring loom, diagnosing and repairing is kind of a nightmare on a Ducati, or any motorcycle (especially one with a fairing). Also, these problems are super common.
Failed rectifiers are probably the most common, and luckily, the easiest to fix.
Are the tank and fairings intact?
Short answer: accept only intact tanks and fairings. At most, you only want to touch-up paint, but NOT replace units.
Dents in aluminium tanks are expensive to replace. And they're easy to acquire. If you have a dent in the tank, don't assume a panel beater can fix it. Few panel beaters will do it, and often it's just impossible without a repaint.
"Dent pullers" and the such that you see advertised on Amazon only work for simple, large dents, usually on cars. Ducati metal tanks are heavy, thick, and hard to fix.
Similarly, it's easy to damage a panel on a faired Ducati. Guess what? Ducati tanks and panels are expensive! Many scratches or dings will devalue your target motorcycle a LOT — thousands, even. A simple tip-over on a Ducati can make it an insurance write-off.
For example, I'm looking at a red Ducati 848 Evo.
The one I'm looking at is intact, but if it had cracked left hand fairings, I'd be up for
- Upper half fairing (part 480.1.503.1AA): US$547.76
- Lower half fairing: (part 4220.127.116.11CG): US$500.88
That's already over a thousand dollars!! Considering I'd pay $5000 for one of these intact, that's a massive (and unbearable) mark-up.
The alternative is off-brand fairings, but they will significantly reduce your ability to re-sell the motorcycle, or the price at which you could sell it.
Is there tank swelling?
Ducati (and other brand) motorcycles of some years had plastic nylon tanks supplied by Acerbis which swelled when petrol/gasoline containing ethanol was used in them.
The tanks swelled because nylon absorbs water and expands. Ethanol can dissolve water, and thus the water it dissolved became absorbed by the nylon.
The years affected were 2005-2010, and the models affected were all models of: Multistrada, Monster, S2R/S4R Monster, Sport Classic, GT1000, Streetfighter, 848, 1098 Panigale, 1198 Panigale, and maybe others.
If yours is a Ducati from one of these years, check for:
- Bumps and blisters in the paint
- The tank bulging asymmetrically
- Key latch hard to open
- Tank too close to ignition shroud
This was a known problem and for a while, Ducati offered replacements under warranty. Many were replaced — but not all of them. So this means just because your Ducati is from those years doesn't necessarily mean you will or won't have a problem! If the owner has evidence of a replacement, all the better.
By the way — later models of Ducati still have plastic tanks. But they're unpainted and covered by other panels that aren't in contact with the gasoline.
Does it have a Termignoni exhaust?
Lastly, I would heavily prioritise Ducati motorcycles with Termignoni (or similarly high-end) exhaust systems.
The stock Ducati mufflers under-serve the Ducati motorcycles, both aurally and aesthetically. The best exhaust systems for Ducatis are those designed by, Termignoni.
However, Termignoni exhaust systems cost over US$1,000 new (often closer to US$2,000), and won't be as available for older machines. But since owners who bought new slapped them on willy-nilly, you can buy a Ducati already equipped with one! It's worth looking or waiting for.
Other exhaust systems are fine too (Remus and Arrow are common on Ducatis). However, stay away from no-name eBay units (somewhat rare on superbikes, but more common on Monsters), which are more often a sign that a bike was dropped on its muffler than a sign that the owner wanted to invest anything.