Plastic gas tank has expanded and warped, causing tank vents to stop working effectively. Gasoline now leaks and sprays extensively from the top of the tank, covering the tank and surrounding areas with gasoline. Gasoline also leaks extensively from the overflow tube onto my garage floor. The expansion has also made it very difficult to access the front tank release latch. I mainly observe this while the motorcycle is stationary in my garage. The gasoline fumes are always present in the garage. While I have not observed it, I suspect this leaking and spraying also happens while riding on streets and highways. The constant presence of gasoline outside the tank is unsafe. On 3-17-17, the ducati dealer recommended that I replace the plastic tank with another plastic tank for $1,200. That is not an adequate solution. These plastic tanks expand and warp over time. It's just a matter of time before the replacement tank expands and warps.
2005 Ducati Monster S2 R fuel system problems
28 complaints (100% of all complaints for this car). Typical mileage when it fails: 6,000.
- owner complaints
- 28
- of this car's complaints
- 100%
- typical mileage
- 6,000
- crashes
- 0
- recalls
- 0
Which part fails
Owners did not name a specific part.
At what mileage
Complaints by mileage at the time of the problem.
Related recalls
No recalls on record for this model year.
Related investigations
Fuel leak at pump/tank interface
After opening this PE, we met with subject owners, dealers, and Ducati North America personnel.We learned that the subject leakage is limited to the Multistrada line alone and is unrelated to composite fuel tank deformation.Rather it stems from the inability of the original sealing O-ring to conform to the tank's relatively rough sealing surface.Recall 11V‑020 provides a new X section O-ring to address the Multistrada issue and with that recall, this PE is closed for the Multistrada.Meanwhile, unlike the Multistrada, the Monster line fails to exhibit a current safety defect trend and, on that basis, this PE is closed for those models as well.
PE10045
What 2005 Ducati Monster S2 R owners say
Most recent owner complaints, unedited.
The plastic fuel tank on this and other ducati motorcycles expand with generally available north american gasoline, such that the tank cannot be attached to the front attachment at the ignition key area, near the handle bars. This makes the fuel tank not secured to the forward part of the motorcycle. This leaves only one attachment, at the rear hinge, so if the motorcycle crashes or is dropped the forward part of the fuel tank will pop away from the frame, probably leaking and susceptible to rupture being plastic. Ducati is aware of the problem and replaced these defective tanks (including mine) pursuant to a class action settlement. Unfortunately ducati used other also defective tanks (same expansion defect with no warning of fuel not to use - if that is the problem) to replace the original defective expanded tanks. Ducati refused my request it rectify the problem. My motorcycle is now dangerously defective, a fire hazard, not suitable for use and would fail a safety inspection making it unlawful to operate on hawaii roads.
After several tank replacement by ducati the problem persists. Tank keeps swelling and puts stress on the latch so that it can't be unlatch to get to the battery or for service . Tank also doesn't sit firm on frame at pik swelling time . Tank also leaks fuel at bottom around seal while swelling is at max. Fuel goes all over the engine and floor .dealer sales k 100 fuel additive for ethanol problems since ducati persist on not changing tank for a improved material.
The plastic fuel tank has expanded due to ethanol in the gasoline. It is pressing on the ignition switch and can no longer be mounted or removed in the normal fashion.
Plastic fuel tank is swollen or warped making it hard to lift the tank for service. Also, tank doesn't sit correctly on the frame, the rubber frame bumpers seem to have moved outward enough to not sit flush with the frame. This seems to be an ongoing problem with numerous models in the ducati line with plastic fuel tanks.
I own a 2005 ducati s2r 800 motorcycle. My fuel tank has expanded beyond the point where the paint has started to crack and it has become difficult to open the latch to get access to the battery and other components. I have already heard that this is not an uncommon issue with certain ducati fuel tanks. Ducati has refused to cover the tank damage and after speaking with the mechanic, he told me that the tank will continue to expand and possibly leak more gasoline as time goes on. I don't want to imagine what could possibly happen as the tank continues to expand and gasoline continues to leak.
Expanding gas tank in 2005 ducati monster poses risk of leaking fuel from warped fuel pump o-ring gasket.
Expanding and deforming plastic tank. Ducati USA replaced with the same kind of tank.
Nylon fuel tank is absorbing moisture from fuel and swelling. Swelling fuel tank is creating an unsafe condition where tank may split resulting in failure, fire, or other hazard. Swollen tank is also pressing against other systems and could cause failure to start, failure or front wheel to turn completely, failure of seat locking mechanism to completely engage.
My 2005 ducati monster s2r800 has a plastic gas tank which has begun to expand. The outside dimensions have increased and it does not sit correctly in the frame and it now its getting close to the ignition switch. Its the original tank , started to show few bubbles here and there! Might be warping! I worry about my safety and as well of others. And hope this gets resolve.
Questions about the 2005 Ducati Monster S2 R fuel system
Does the 2005 Ducati Monster S2 R have fuel system problems?
Owners have filed 28 complaints about the fuel system of the 2005 Ducati Monster S2 R, 100% of all its complaints, more than any other problem.
At what mileage do 2005 Ducati Monster S2 R fuel system problems start?
The typical (median) mileage in owner complaints is 6,000 miles.
Was there a recall on the 2005 Ducati Monster S2 R fuel system?
There is no recall for this problem on this model year.
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