Paul H Posted January 5, 2021 Report Share Posted January 5, 2021 Hi stopped using the lockable petrol cap on my Vitesse as the sealing rubber had perished . Just had a go at replacing the sealing washer . Turned out to be easier than I thought . Remove the securing pin at the top , remove the workings . The seal can now be removed . I made another with 2 layers of inner tube glued together . Reassemble job done Petrol cap rubbers are subject to mot check . Paul Link to comment Share on other sites More sharing options...
Colin Lindsay Posted January 5, 2021 Report Share Posted January 5, 2021 Yep... that's a pass... Actually if you need any the seals are available new, all you need to know is the diameter. Link to comment Share on other sites More sharing options...
daverclasper Posted January 6, 2021 Report Share Posted January 6, 2021 Just wondering if inner tubes are petrol resistant and won't get melted by fumes/full tank?. Dave Link to comment Share on other sites More sharing options...
Paul H Posted January 6, 2021 Author Report Share Posted January 6, 2021 3 minutes ago, daverclasper said: Just wondering if inner tubes are petrol resistant and won't get melted by fumes/full tank?. Dave I’ll let you know 😱 Pretty sure the new seal will be ok . To be sure I’ll put a section of inner tube in a jar of petrol and leave Paul Link to comment Share on other sites More sharing options...
daverclasper Posted January 6, 2021 Report Share Posted January 6, 2021 15 minutes ago, Paul H said: I’ll let you know 😱 That would be good, as always looking for dodges. Cheers, Dave Link to comment Share on other sites More sharing options...
poppyman Posted January 6, 2021 Report Share Posted January 6, 2021 21 minutes ago, Paul H said: I’ll let you know 😱 Pretty sure the new seal will be ok . To be sure I’ll put a section of inner tube in a jar of petrol and leave Paul If it's not ok Paul, if you have any oil filters about with a rubber seal on them? They work on fuel caps. My 2500 had the same problem and it's been on a couple of years now. Tony. 1 Link to comment Share on other sites More sharing options...
Paul H Posted January 27, 2021 Author Report Share Posted January 27, 2021 Following suggestions I placed a section of inner tube in petrol , partially submerged . 2 weeks plus later and the inner tube is still fine so will now fit the refurbed petrol cap Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 27, 2021 Report Share Posted January 27, 2021 dont forget your bike now has a flat tyre Ha !!!! Link to comment Share on other sites More sharing options...
Steve P Posted January 27, 2021 Report Share Posted January 27, 2021 Don,t forget it needs to vent,that`s probably what that V in the old one is,i have the same on my Vitesse,without the vent it`s breakdown time. S Link to comment Share on other sites More sharing options...
Paul H Posted January 27, 2021 Author Report Share Posted January 27, 2021 7 minutes ago, Steve P said: Don,t forget it needs to vent,that`s probably what that V in the old one is,i have the same on my Vitesse,without the vent it`s breakdown time. S The V is a split !! I did use the cap before but stopped when it was mot time . I will check to make sure there’s no vacuum Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 27, 2021 Report Share Posted January 27, 2021 they vent through the lock barrel not the seal (before the days of roll over seal ability ) ie when upside down in a ditch fuel will leak out the key hole dont smoke or ..... Kaboom !! becomes a topic for the other thread Ha pete Link to comment Share on other sites More sharing options...
Steve P Posted January 30, 2021 Report Share Posted January 30, 2021 Well mine didn't vent through the lock,it was a nos one in its original box,it created the vacuum and stopped the engine before I figured out what was happening. Fine since I modified it. Steve Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 30, 2021 Report Share Posted January 30, 2021 Steve ,,,,,there's always One Ha !!! with all the variety of caps nothings cast in stone when roll over leaks became legal they introduced a small plastic tit one way vent valve but storing vans with only a gallon of fuel in in this allowed a unhelpful bias of vacuum or pressure the cool nights allowed air in and filled the empty volume , then when sun came out and warmed the air expanded the out come was the pressure would rebuild after every evening and morning over come the fuel pump and carb needles and fill the sump with petrol the answer was to cut the tip off the valve .... bright ideas with disaster looming Pete Link to comment Share on other sites More sharing options...
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