couple of probs

[tattoo]

hiya guys.

1. i changed the clutch fluid a couple of days back and all the noise in previous post all but went so i took her out for a good run yesturday but at around 130mph the clutch slipped for about a second and then was ok for the rest of the day,when i got home i noticed the fluid had gone a very dark brown..is this telling me the cluch is on it's way out???

2.i've fitted vacuum pipe extentions so it's easier to balance the carbs but when a mate asked what they were for i pulled the blank out(bike wasn't running) and explained the gauges fit on theses instead of takeing the tank off and found petrol leaking from it....is this normal???

any advice is greatfully recieved

andi.

[bazza696]

I would have thought the clutch slip would not be a proble, what engine oil you using, some guys on here have noted that fully synthetic can cause the clutch to slip. I stick with semi, ew err
I have been told the fluid will go dark over time becuase the oil that comes off the chain gets chucked on the piston that pushes the clutch, thus it works its way up the line, not big proble. If it is doing after a run then one of the guys on here would be able to tell you if a seal is going.

The fuel coming out of the vac hose, uumm first thing I would say the fuel valve diaphram or seal of a kind has gone the way of the rubber heaven, but this can be confirmed by the more experience members off here.

[tony.mon]

The clutch fluid is is a sealed system, any contamination from chain grease or any other external oil or fluid would also mean that clutch fluid could leak out as well.
This would immediately lead to loss of clutch operation.
The colour of the fluid is because no matter how carefully you bleed the system there's always some residual old fluid left in there which doesn't get changed in the bleeding operation, and when old mixes with new it'll change colour.
It's tiny metal and plastic particles in suspension, from the mechanical parts of the system, pistons, seals etc.
If you re-bleed it through with fresh fluid it'll stay cleaner for longer.

But it's not a problem, and the clutch line doesn't even need to be filled with fresh fluid as it can't get hot enough to boil, unlike brake lines.

Re the fuel coming out of the vac hose, the take-off point screws directly into the air intake side, down draft of the fuel inlet at the carb.
So it's no surprise that the tube could fill with fuel droplets, which condense into liquid fuel.
Never noticed fuel coming out of mine, though...

Try securing the tube in an upwards direction instead of letting it dangle down, liquid won't run uphill and so any condensed petrol will drain naturally back into the inlet tract under normal running.