OK - Question for all.
Filled bike up with fuel the other day 7L approx, did the ride as above.
Got home, that night and from then on leaking fuel out of overflow nipple on bottom of bowl. Now i know my petcock doesnt fully close off when in off position, normally not a prob, but im thinking that the extra volume of fuel is forcing its way into the carby to overflow it ?
That night i whacked a hose on bottom nipple and wedged it under seat to catch / stop flow, ofcourse this backfired and just allowed the fuel to fill carby and into cylinder as would not start, spitting fuel out exhaust pipe flange and wet plug
Drained tank, removed petcock, replaced tap rubber.
Removed carby, checked carby, evidence that fuel was heaps high, bowl gasket all wet etc. Was a fair amount of rusty crud in carby from tank as last two rides were first ones with full tank washing around inside pulling through crud.
Main jet was 80% blocked with crud - blew it out.
Put carby back on, put back in place the inline fuel filter i had on previously, with clear hose so can see if starving due to filter etc.
Put petcock back together, still leaks on off position though alot less.
New plug in, bike eventually started, as heaps of fuel still in cylinder engine i think
Took bike for ride (15km) felt really good. parked last night, checked hour or two later - zero leaking from fuel bowl nipple.
Open garage this morning - smell of fuel and constant drip from nipple
So question is can a full tank and dicky petcock force fuel into carby, needle jet seemed to seal well enough that me blowing through fuel line could not get air through unless i let need valve drop out, as if zero fuel in bowl etc, didnt have to depress the internal spring for it to stop me being able to blow through.
Or do you think it is more related to needle and seat, as in theory the needle and seat should be able to stop the flow even with fuel left on, which ppl forget and do all the time. I will pull out, inspect etc, although im thinking it is fine as i could not make air pass when blowing on fuel line with needle only just in closed position with no pressure etc.
PS - i think i will piss of my orig cumbersome over the top petcock for a simple basic small one.
Also now thinking i will have to check my engine oil for petrol in it due to extreme flooding it had, i will take carby out / apart / check everything then test the carby overnight with tank on stand on bench and carby rigged up level etc, easier then taking in and out of bike and more petrol in oil, dont want to change the oil multiple times would rather do it once and save some cash..... bloody carby's eh.
All advice welcome, cheers all.