haha that’s true
well, I don’t have a fuel pump. apparently it’s a model without! strange but true…
peppiiino (27/01/2015)
Hi,
i hope you solved this, however i used to have the 92 model and had the same identical issue:
the problem is the vacuum diaphramm in the fuel tap, 100%
there is a security system in the fuel tap, even if the fuel is open it only comes down if sucked, there is a hose that goes from the left part of the engine to the fuel tap, when you start the engine it creates a vacuum that open this diaphramm, letting the fuel down.
with the years this diaphramm (or the spring attached to it) can be corroded and this will not allow the fuel to go to the carbs, so few minutes and the bike is dead!!!
it took me months to understand what the issue was, and it is so easy to solve:
you need to open the fuel tap and change the diaphramm and spring with a new one, online you can find the kit (it’s the same as the cbr 400 or vfr400)
however, there is also a quick temporary fix:
if you look at the fuel tap you can see a sort of breather little tube on the bottom part,
you start the engine normally and block this breather tube with your finger for few seconds, this will help the vacuum process and the bike will be fine (been doing this for few months before i eventually bought the kit and it worked everytime)
I hope you solve this issue, it was so annoying and i understand how you feel…
Peppino! thanks for the info!
The problem now seems to be solved. Not sure if the diaphragm has been changed, but it definitely was part of the problem (although the biggest issue was the gunk and rust in the tank, that went on to blocking the fuel tap and **** up things in the carbs). I just asked Tim from Scorch about it and will write here again once I know it!
but thanks for the quick fix solution, in case it happens again (fingers crossed it won’t)