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fuel tank "under pressure"

16697 Views 51 Replies 17 Participants Last post by  OscarWilde
the fuel tank lid is difficult to open..... the inner pressure seals it to the tank and I have to strongly pull out using the lock's cover till air comes in (pppssssssss)

someone else has same issue?
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I'm interested to hear the result as I have the same issue.
I went to the dealer today - he was surprised when I showed him the suction that was under the cap when I lifted it. I suspect that this vacuum is also responsible for the stalling that I experience sometimes when downshifting and blipping the throttle.

They took the bike in to the workshop and said they cleared out the relief tube. Will see what happens...
I have a sneaking suspicion the might have just used compressed air. When I filled up immediately after the visit to the dealer, a small vacuum Had already formed, I'll see what happens next time I fill up.
I still have the problem, I have my bike scheduled in for the dealer to have a proper look in mid August.
Ok, update - I dropped my bike off at the dealer a couple of weeks ago. They took a look and told me they found a blockage in the equalizer tube. Since then there have been no problems, my tank has no vacuum. The fuelling also seems to have improved.
I have also noticed that the problem I was having with stalling on the downshift+braking has gone too.
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