Been looking around the internet and not found much, but was wondering if there's a breather vent or hole that can be cleaned or poked on the fuel tank cap at all?
I know there's a hole that goes from the top of the tank to the bottom vent underneath, but was wondering if there was anything in the cap at all that could need a clean.To be honest it doesn't really matter now, i just found a shiny brand new one for £20 so thought i'd tart the bike up a bit as the old one looks so grubby.It'll mean another key but i'm not really bothered about that.
Quote from: darrsi on 11 February 2017, 03:00:52 pmI know there's a hole that goes from the top of the tank to the bottom vent underneath, but was wondering if there was anything in the cap at all that could need a clean.To be honest it doesn't really matter now, i just found a shiny brand new one for £20 so thought i'd tart the bike up a bit as the old one looks so grubby.It'll mean another key but i'm not really bothered about that. Now i do like shiny - but what is so bad about the old one, wont it clean up
Quote from: fazersharp on 11 February 2017, 03:12:40 pmQuote from: darrsi on 11 February 2017, 03:00:52 pmI know there's a hole that goes from the top of the tank to the bottom vent underneath, but was wondering if there was anything in the cap at all that could need a clean.To be honest it doesn't really matter now, i just found a shiny brand new one for £20 so thought i'd tart the bike up a bit as the old one looks so grubby.It'll mean another key but i'm not really bothered about that. Now i do like shiny - but what is so bad about the old one, wont it clean upJust looks old and a bit battered, and £19.99 delivered is not exactly breaking the bank.
This is what I would doDrop allen key on tank - and chip tank.Drop old filler on tank - bigger chip.Drop new filler on floor - and bust itPut old filler cap back on.Spend 1 hour looking for the last bolt that the garage fairies have hidden.Think - well that was a good 3 hours and 19.99 spent.On top of that its now raining and I could of spent that 3 hours out on the bike
Quote from: darrsi on 11 February 2017, 03:25:18 pmQuote from: fazersharp on 11 February 2017, 03:12:40 pmQuote from: darrsi on 11 February 2017, 03:00:52 pmI know there's a hole that goes from the top of the tank to the bottom vent underneath, but was wondering if there was anything in the cap at all that could need a clean.To be honest it doesn't really matter now, i just found a shiny brand new one for £20 so thought i'd tart the bike up a bit as the old one looks so grubby.It'll mean another key but i'm not really bothered about that. Now i do like shiny - but what is so bad about the old one, wont it clean upJust looks old and a bit battered, and £19.99 delivered is not exactly breaking the bank.This is what I would doDrop allen key on tank - and chip tank.Drop old filler on tank - bigger chip.Drop new filler on floor - and bust itPut old filler cap back on.Spend 1 hour looking for the last bolt that the garage fairies have hidden.Think - well that was a good 3 hours and 19.99 spent.On top of that its now raining and I could of spent that 3 hours out on the bike
The hole under the fuel cap on mine got clogged a couple of months ago, cleaned it out with a long bit of single core wire and blew down it using a drinking straw. Not sure if that is what you mean though.
I suppose the obvious question is what makes you think it's blocked?
As a lay-man, I would think a blocked breather would cause the tank to gain a negative pressure so that when you open the filler cap a loud hiss of air rushing in would be apparent. Is that the case?
Quote from: locksmith on 14 February 2017, 09:09:21 amAs a lay-man, I would think a blocked breather would cause the tank to gain a negative pressure so that when you open the filler cap a loud hiss of air rushing in would be apparent. Is that the case?I think if it was totally blocked it would do that, but if it was that bad it would also run like shite or even cut out.Once it's started, eventually, it appears to run okay though. I'm mainly only doing 6 mile runs to and from work so it may not even be far enough to build up a big vacuum.To be honest, i'm just trying everything, one thing at a time, until i figure it out. I might try blowing air up from the bottom of the tank which will be easier to feel if it's blocked or not. I can't see why it should be though as it all looks like a sealed unit once the cap is locked down.
Quote from: darrsi on 14 February 2017, 10:49:08 amQuote from: locksmith on 14 February 2017, 09:09:21 amAs a lay-man, I would think a blocked breather would cause the tank to gain a negative pressure so that when you open the filler cap a loud hiss of air rushing in would be apparent. Is that the case?I think if it was totally blocked it would do that, but if it was that bad it would also run like shite or even cut out.Once it's started, eventually, it appears to run okay though. I'm mainly only doing 6 mile runs to and from work so it may not even be far enough to build up a big vacuum.To be honest, i'm just trying everything, one thing at a time, until i figure it out. I might try blowing air up from the bottom of the tank which will be easier to feel if it's blocked or not. I can't see why it should be though as it all looks like a sealed unit once the cap is locked down.Have you tried taking it out for a dam good thrashing
Quote from: fazersharp on 14 February 2017, 11:14:50 amQuote from: darrsi on 14 February 2017, 10:49:08 amQuote from: locksmith on 14 February 2017, 09:09:21 amAs a lay-man, I would think a blocked breather would cause the tank to gain a negative pressure so that when you open the filler cap a loud hiss of air rushing in would be apparent. Is that the case?I think if it was totally blocked it would do that, but if it was that bad it would also run like shite or even cut out.Once it's started, eventually, it appears to run okay though. I'm mainly only doing 6 mile runs to and from work so it may not even be far enough to build up a big vacuum.To be honest, i'm just trying everything, one thing at a time, until i figure it out. I might try blowing air up from the bottom of the tank which will be easier to feel if it's blocked or not. I can't see why it should be though as it all looks like a sealed unit once the cap is locked down.Have you tried taking it out for a dam good thrashingNot sure what purpose that would serve, it's a starting issue, not a running one.
Next time it happens take a plug out and check if it's sparking and what condition it's in if it's wet etc
Don't know if you have tried this but next time you start it up at work open the fuel cap first, then start it up. If it starts up ok then I would check that all the hoses are clear of debris and gunk and not kinked and replace them. I realise that you have said before that you have checked them but if it is mayonaise type gunk it is hard to clean it out properly and replacement hose is cheap.