Hello, I'm in the process of performing the 'Charcoal Canister Removal' on my 2017 Stelvio. It looks as though the fuel tank has been leaking for some time. (The bike is new to me and has 5k miles). My first thought is to replace the gasket for the fuel pump/filter assembly. Has anyone seen this issue or replaced their gasket? Just want to make sure I'm not 'opening a can of worms' by removing the large black nut.
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Fuel tank leak
- Thread starter McCrea
- Start date
Hi!
I wrote the guide for removing the charcoal canister. It’s pretty comprehensive and takes you through it step by step. If you have a question, please let me know.
I recommend reading the procedure all the way through, looking at the photos, so that you know where you are going and how to get there.
Yes, your tank has been leaking but probably not because it was loose but more likely because it was overtightened.
When overtightened, it pinches up the rubber gasket which looks just like a old style mason jar rubber gasket, and causes it to leak.
I would not spin off the black locking collar until you get the OEM replacement gasket from someplace like MG Cycle or AF1.
Then, I would very lightly spray the rubber seal with some silicone spray and wipe the excess off of it all over with my thumb and index finger.
You want just the very lightest film of silicone so that when you reinstall the retaining ring, it doesn’t pinch and distort the seal. Just be sure not to over tighten it. It only needs to be seated and then an additional 2-3 mm turn more snug. It just holds back sloshing gas, not high pressure.
Remember - Do not over tighten it!
Also, it appears you have mastered the removal of the fuel line connector which is awesome!
It’s really a simple and elegant design when you understand it. Just visually check the locking pawls for breakage or cracks.
People who don’t know better, get in there with a screwdriver trying to pry the fuel line out, and damage or break the pawls.
Ok…
Good Luck!
Moto Guzzi Part Number: 854937
I wrote the guide for removing the charcoal canister. It’s pretty comprehensive and takes you through it step by step. If you have a question, please let me know.
I recommend reading the procedure all the way through, looking at the photos, so that you know where you are going and how to get there.
Yes, your tank has been leaking but probably not because it was loose but more likely because it was overtightened.
When overtightened, it pinches up the rubber gasket which looks just like a old style mason jar rubber gasket, and causes it to leak.
I would not spin off the black locking collar until you get the OEM replacement gasket from someplace like MG Cycle or AF1.
Then, I would very lightly spray the rubber seal with some silicone spray and wipe the excess off of it all over with my thumb and index finger.
You want just the very lightest film of silicone so that when you reinstall the retaining ring, it doesn’t pinch and distort the seal. Just be sure not to over tighten it. It only needs to be seated and then an additional 2-3 mm turn more snug. It just holds back sloshing gas, not high pressure.
Remember - Do not over tighten it!
Also, it appears you have mastered the removal of the fuel line connector which is awesome!
It’s really a simple and elegant design when you understand it. Just visually check the locking pawls for breakage or cracks.
People who don’t know better, get in there with a screwdriver trying to pry the fuel line out, and damage or break the pawls.
Ok…
Good Luck!
Moto Guzzi Part Number: 854937
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