hi folks,new to this forum...:sneaky..

i have a leaking fuel tap on my 93 yzf750..
and the bike is running on three whilst ticking over,
being vacum operated from number 1 inlet manifold,
i'm wondering if it will be sucking fuel down the vacum pipe
causing the rough tickover..

plugs are fine and clears at higher revs...

has anyone experienced this...?

its got me stumped:bangwall

when there is vaccuum it will suck anything and always be there, low or high. It has to be something else. I am not sure what you are asking, you speak like from over the ocean?

yzf 750`s are known for fuel level problems and worn out emulsion tubes which will dump alot more fuel when it shouldnt , had to do it to mine, sounds like its time to go through the carbs and check the petcock on the tank , when that goes bad it will pull fuel from that and put it into #1 cylinder.

i have the same problem how much is a new petcock/fuel tap? or is there anyway this can be fixed as i used a repair kit and that has not worked???

a new petcock is about a $100.00 at the dealer , and hardley ever seen those petcock kits work.