Cleaning Ducati Monster Tank with Citric Acid after we had an issue with debris and dirt making its way into the carbs and also clogging up the fuel filter, as a result the bike to ran poorly. It seems like the dirt and debris was due to some corrosion inside the tank.
You can see there was a lot a crud in the carb bowls despite having been cleaned last year, see our other post here. The source of the crud was the inside of the fuel tank, there seemed to be corrosion building up on the inside.
The question is what’s best to clean the inside of the tank. It’s not easily accessible and you also don’t want to put media inside that you can’t get back out. I have used citric acid to clean corrosion and slag off some metal work projects in the past.
It’s basically lemon juice, you can buy it in some supermarket or chemists. It’s safe on paintwork too, though I would’ve leave it there for extended periods.
We simply mixed the citric acid powder with warm water and fill the tank, leave it overnight with occasional agitation.
Once done, we just empty tank and rinse with clean water. The tank in the monster has a drain plug which is handy for getting all or most of the excess water out.
We heated the empty tank up and left it for a while to try drive out any left over water. We put tank and clean carbs back on and put fresh petrol in, bike stated first time.
Finally, we are glad to report that everything was ok once everything was back together. After the work we cranked the bike over and she started first time. We fitted and new fuel filter and as a result of the previous issue we plan to change the filter again in about 3-4 weeks. We do hope you enjoyed reading about Cleaning Ducati Monster Tank with Citric Acid. See below for a little YouTube video we also together