hi i ride an rsvr millie 2000, filled up to day and the tank emptied all fuel via the overflow pipe, refilled started bike and tank emptied via breather pipe, can anyone help
Joined Jan 2013
123 Posts | 0+
ashton under lyne
hi mate, thats an odd one, only thing i can think of is pressure is building up in the fuel tank because the air vent pipe around the filler cap is blocked, its there to stop a vacuum forming in the tank. only a guess though, hope you sort it. have a word griff at aprilia performance he will know.
Joined Nov 2012
97 Posts | 0+
Cheltenham, Gloucestershire
i would have to agree with PaulW, the breathers are blocked off from the tank when the fuel filler is closed, i knw this because my left breather hole is blocked, and when it rains the water builds up and will only enter the tank when i open the filler.. already unblocked it once, but there must be corrosion build up in the bottom elbow coming from my tank..
only way it could flow from the breathers may be a burst pipe (on the breather pipe) on the later models (2002 etc) the breathers outlets are built into the tank, rather than built in the pump system. maybe there is a small hole in the inside of the tank part of the pipework. you need to remove the tank, block the two breather holes at the top, then see if you can blow down the outlets still.. Silicone hose (fish tank air line) should help get a good connection, not sure whats best for blocking the holes at the top, maybe a small blob of silicone sealant, let it go off over night before the test, at least with silicone you can pull it out again after.. (spray some wd40 inside the tube before applying any)
if you can blow down them, its a leak.. (seen a tank on ebay this week, was at around £40)
Maybe someone else can think of a better way - Agree, a very strange one..
Darrenb
only way it could flow from the breathers may be a burst pipe (on the breather pipe) on the later models (2002 etc) the breathers outlets are built into the tank, rather than built in the pump system. maybe there is a small hole in the inside of the tank part of the pipework. you need to remove the tank, block the two breather holes at the top, then see if you can blow down the outlets still.. Silicone hose (fish tank air line) should help get a good connection, not sure whats best for blocking the holes at the top, maybe a small blob of silicone sealant, let it go off over night before the test, at least with silicone you can pull it out again after.. (spray some wd40 inside the tube before applying any)
if you can blow down them, its a leak.. (seen a tank on ebay this week, was at around £40)
Maybe someone else can think of a better way - Agree, a very strange one..
Darrenb
thanks for advise, i can blow through the both pipes, going to check again tomorrow, wonder why its through overflow with engine switched off and breather when running, will investigate further, but thanks again
Joined Oct 2009
3K Posts | 1+
Empty the tank,pull the pump out ..it's the breather/drain hoses from the fuel filler cap that have perished
Common issue
Common issue
Hi,and thanks,I did think that might of been the problem,is there anywhere you can get replacement pipes from to fit?and I bet it's a pain to do knowing aprilia
Joined Oct 2009
3K Posts | 1+
You need submersible fuel line .intank fuel injection hose most motor factors sell it..pretty easy.
Drain and remove tank,remove pump..undo clips replace hoses then reverse of above.
Give yourself an hour or two to do it
