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Old Sep 5th 2018, 08:50 AM   #1
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I Ride: 2017 Ducati Panigale 1299S
1299 S - Engine shutoff and fuel leakage

Need some input to assuage my fears about a fuel leak after a recent air filter install.

On my last weekend ride, I had just finished filling up my tank about 3/4 of the way and took off to head home. Exactly 1 mile later or about 3-4 minutes after my fill-up, the bike power suddenly cut out and behaved as it normally would if it had just run out of gas. As I was coasting, I tried giving the starter a try because these little random stalls have always been a part of the 1299 for me. However, I caught a strong whiff of fuel so I killed the engine entirely and just coasted to a stop.

Once I came to a stop, I looked down and saw a small puddle of fuel forming right beneath and behind the lower radiator. The puddle was pretty small, looked like a few ounces of liquid at best, but it was definitely fuel.

Got it towed home to inspect.

Two days prior, I had just installed a new Sprint P08 air filter with no issues and everything being put back together perfectly. I confirmed this after getting the bike towed back home and taking it apart again to make sure I didn't fuck something up. Both hoses from the tank are solid without kinks, connections are tight on the quick release connector and fuel injectors, seal was good when reinstalling tank, and the filter was still locked in tight without any signs of incorrect installation or damage. There were no signs of oil or fuel in any strange or unexpected locations anywhere on the bike, internally or externally, except for something that, judging from the smell, I think may have been a small splash of oil that dripped onto the right side header. I'm not for sure on that though.

I put the bike back together after a few hours and a few stress scotches and tried giving the starter a go. It didn't work at first, but after trying 2-3 more times with breaks in between, it eventually fired up and I rode it around the neighborhood for 3-4 minutes with no strange sounds, behaviors, or anything amiss.

After reading up on it a bit, my current theory points to some type of overfill event in relation to the evap canister. As it seems a hose from the tank goes to that and then empties out beneath the radiator where I spotted the fuel leak earlier in the day. However, I'm worried because of the recent air filter install. Naturaly, you attribute any new problems to recent changes in the bike so that's where my mind immediately went, but with everything seemingly installed correctly and without issues, that leads me to look at what I think is the more likely culprit, a fuel overflow into the evap canister.

Not sure if it's important to note, but this was the first fill-up since the air filter install. Also, I had ridden the bike from my house about 30 miles into town without issues before this happened. Had lunch, rode to a gas station, and then the above scenario played out right after filling up.

So, help assuage my fears here or make them worse lol. Does what I described above sound like something to do with the air filter install? Or does something like a overfill situation sound more likely? Or, could it be something else entirely?
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Old Sep 5th 2018, 06:08 PM   #2
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Looks like the canister hoses are swapped, just remove the canister entirely, I did it to mine I have a better start ups now
2015 1299s
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Old Sep 5th 2018, 06:55 PM   #3
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Not sure what your issue was, but on my old 1199 I had a similar event after installing an air filter. Made it several miles on the highway and the engine cut out. I pulled over and there was fuel coming from the bottom of the bike. Stupid me....not knowing what was going on I hit the starter and poooof....flash fire. Luckily it didnt damage the bike or myself.

Long story short I got it home and the problem was at the fuel quick disconnect. I thought it was right....it seemed that way....but when I pushed it harder to check it clicked. So I didnt have it snapped completely even though it sure seemed that way!

I know you said yours was right, but you didn't snap it tight on the second go around did you?
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Old Sep 6th 2018, 09:37 AM   #4
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Originally Posted by gnance View Post
Not sure what your issue was, but on my old 1199 I had a similar event after installing an air filter. Made it several miles on the highway and the engine cut out. I pulled over and there was fuel coming from the bottom of the bike. Stupid me....not knowing what was going on I hit the starter and poooof....flash fire. Luckily it didnt damage the bike or myself.

Long story short I got it home and the problem was at the fuel quick disconnect. I thought it was right....it seemed that way....but when I pushed it harder to check it clicked. So I didnt have it snapped completely even though it sure seemed that way!

I know you said yours was right, but you didn't snap it tight on the second go around did you?
I actually happened to read about your experience in one of the old threads I found. It was the first thing I checked when I pulled the tank back up and it definitely seems fully tightened. When I'm in there Saturday installing the new exhaust, I'll give it one more check to be certain.

I'm thinking that I'll look into taking the canister off completely but I need to find some exact instructions first before I jump into it and see if my dealer mightttt be willing to help out on one of my next visits . Otherwise, if I find clear enough instructions I'll just follow those on my own.
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Old Sep 10th 2018, 11:59 AM   #5
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Welp, not sure what did it, but it seems to be working fine now. We took the bike apart to install the akra exhaust, which, side note, was one hell of a project. Either way, whether it was a loose or pinched hose somewhere or an overfilled evap canister, or not fully seated fuel quick connect, something must've been properly re-insterted when we pieced everything back together and fixed the issue in the process.
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