Had my V4s for about 6 months now and had a whole bunch of recalls done. The other day parked the bike up after a slow ride through traffic (so bike was hot) and after 10 mins in the garage the fuel started bubbling in the tank. It was loud. Like I was cooking pasta. Anyone else experienced boiling fuel on the v4? I love this bike but the let downs for me are the sheer number of recalls and the quickshifter. My HMSS QS on my fireblade is 10x better than the Ducati. The downshift blipper is nice though. I guess this is Ducati ownership
If it’s as loud as you say then you are right to be concerned of course. It might sound obvious but best to be extremely cautious if you decide to open the filler cap while this is happening. Can you determine if the tank is venting through the cap? It ought to be, i’m guessing this is with a near empty tank?
Hi Chris Yes this was with about 1/4 tank. When I opened the filler cap there was quite a pressure release but the fuel continued to bubble away for at least another 10 mins. Can’t tell if it’s venting through the cap but that could definitely explain it. Back to the dealer on Tuesday methinks.
Had exactly the same with my M1100evo. Ducati UK and Pro Twins know about it, but the cause was never established. The tank was venting ok, but the filler cap was replaced. Some wrap was put around the exhaust and extra heat shielding put below the fuel pump to stop the fuel pump getting too hot, but that didn’t fix it. Ducati even replaced the tank. The only thing that wasn’t replaced was the fuel pump. Ultimately I wrote the bike off before it got sorted, but I had many cautious moments at petrol stations opening the fuel cap. It really could build up a lot of pressure. First time it happened it created a nice fountain of fuel out of the filler. There are a couple of threads about it on the UKMOC forum http://www.ukmonster.co.uk/monster/showthread.php?t=45975 http://www.ukmonster.co.uk/monster/showthread.php?t=48192 http://www.ukmonster.co.uk/monster/showthread.php?t=50885
The thing is that petrol starts to "boil" at quite a low temperature, circa 50°C.... It's a right mix of chemicals and additives, so it's hard to be exact. I assume that the engine and exhaust heat together with ambient all conspire to make this worse. May be some air con is required?
There should be zero pressure (positive or negative) release when you remove cap. There is a vent to atmosphere pipe to prevent this. Check your tanks plumbing.
